Merge pull request #1446 from pozhiloy-enotik/patch-1

Allow external use
2022-04-15 07:21:23 +08:00 · 2022-04-12 16:18:34 +03:00 · 2022-03-20 10:16:16 +08:00 · 2022-03-19 21:27:26 -04:00 · 2022-03-19 21:21:44 -04:00 · 2022-02-27 08:55:34 +08:00
97 changed files with 1884 additions and 4058 deletions
--- a/AndroidLibV2rayLite/.gitignore
+++ b/AndroidLibV2rayLite/.gitignore
@@ -0,0 +1,2 @@
+*.jar
+*.aar
--- a/AndroidLibV2rayLite/.travis.yml
+++ b/AndroidLibV2rayLite/.travis.yml
@@ -1,26 +0,0 @@
-sudo: required
-language: go
-go:
-  - "1.12"
-go_import_path: github.com/2dust/AndroidLibV2rayLite
-git:
-  depth: 5
-addons:
-  apt:
-    update: true
-before_script:
- sudo ntpdate -u time.google.com
- date
- make all
- make downloadGoMobile
-script:
- make BuildMobile
-after_success:
-deploy:
-  provider: releases
-  api_key: ${GH_TOKEN}
-  file:
-    - libv2ray.aar
-  skip_cleanup: true
-  on:
-    tags: true
--- a/AndroidLibV2rayLite/CoreI/Status.go
+++ b/AndroidLibV2rayLite/CoreI/Status.go
@@ -1,7 +1,7 @@
 package CoreI

 import (
-	v2core "v2ray.com/core"
+	v2core "github.com/xtls/xray-core/core"
 )

 type Status struct {
@@ -14,7 +14,7 @@ type Status struct {
 }

 func CheckVersion() int {
-	return 22
+	return 23
 }

 func (v *Status) GetDataDir() string {
--- a/AndroidLibV2rayLite/Makefile
+++ b/AndroidLibV2rayLite/Makefile
@@ -8,24 +8,19 @@ asset:
 	# cd assets;curl https://raw.githubusercontent.com/2dust/AndroidLibV2rayLite/master/data/geosite.dat > geosite.dat		
 	# cd assets;curl https://raw.githubusercontent.com/2dust/AndroidLibV2rayLite/master/data/geoip.dat > geoip.dat

-fetchDep:
-	-go get  github.com/2dust/AndroidLibV2rayLite
-	go get github.com/2dust/AndroidLibV2rayLite
-
 ANDROID_HOME=$(HOME)/android-sdk-linux
 export ANDROID_HOME
 PATH:=$(PATH):$(GOPATH)/bin
 export PATH
 downloadGoMobile:
-	go get golang.org/x/mobile/cmd/...
 	sudo apt-get install -qq libstdc++6:i386 lib32z1 expect
 	cd ~ ;curl -L https://raw.githubusercontent.com/2dust/AndroidLibV2rayLite/master/ubuntu-cli-install-android-sdk.sh | sudo bash - > /dev/null
 	ls ~
 	ls ~/android-sdk-linux/
-	gomobile init ;gomobile bind -v  -tags json github.com/2dust/AndroidLibV2rayLite

 BuildMobile:
-	@echo Stub
+	gomobile init
+	gomobile bind -v -ldflags='-s -w' github.com/2dust/AndroidLibV2rayLite

-all: asset pb fetchDep
+all: asset pb
 	@echo DONE
--- a/AndroidLibV2rayLite/README.md
+++ b/AndroidLibV2rayLite/README.md
@@ -1 +1,16 @@
 # AndroidLibV2rayLite
+
+进入`AndroidLibV2rayLite`文件夹
+
+```
+go mod download
+```
+
+
+
+编译aar
+
+```
+gomobile bind -v -o android.aar -target=android ./
+```
+
--- a/AndroidLibV2rayLite/VPN/vpnservice_support.go
+++ b/AndroidLibV2rayLite/VPN/vpnservice_support.go
@@ -12,8 +12,10 @@ import (
 	"time"

 	"golang.org/x/sys/unix"
-	v2net "v2ray.com/core/common/net"
-	v2internet "v2ray.com/core/transport/internet"
+	v2net "github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/features/dns"
+	"github.com/xtls/xray-core/features/outbound"
+	v2internet "github.com/xtls/xray-core/transport/internet"
 )

 type protectSet interface {
@@ -190,6 +192,11 @@ func (d *ProtectedDialer) getFd(network v2net.Network) (fd int, err error) {
 	return
 }

+// Init implement internet.SystemDialer
+func (d *ProtectedDialer) Init(_ dns.Client, _ outbound.Manager) {
+	// do nothing
+}
+
 // Dial exported as the protected dial method
 func (d *ProtectedDialer) Dial(ctx context.Context,
 	src v2net.Address, dest v2net.Destination, sockopt *v2internet.SocketConfig) (net.Conn, error) {
--- a/AndroidLibV2rayLite/VPN/vpnservice_support_test.go
+++ b/AndroidLibV2rayLite/VPN/vpnservice_support_test.go
@@ -9,7 +9,7 @@ import (
 	"testing"
 	"time"

-	v2net "v2ray.com/core/common/net"
+	v2net "github.com/xtls/xray-core/common/net"
 )

 type fakeSupportSet struct{}
--- a/AndroidLibV2rayLite/compile-tun2socks.sh
+++ b/AndroidLibV2rayLite/compile-tun2socks.sh
@@ -23,8 +23,8 @@ trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; clear_tmp
 install -m644 $__dir/tun2socks.mk $TMPDIR/

 pushd $TMPDIR
-git clone --depth=1 https://github.com/shadowsocks/badvpn.git
-git clone --depth=1 https://github.com/shadowsocks/libancillary.git
+git clone --depth=1 https://github.com/XTLS/badvpn.git
+git clone --depth=1 https://github.com/XTLS/libancillary.git
 $NDK_HOME/ndk-build \
 	NDK_PROJECT_PATH=. \
 	APP_BUILD_SCRIPT=./tun2socks.mk \
--- a/AndroidLibV2rayLite/go.mod
+++ b/AndroidLibV2rayLite/go.mod
@@ -0,0 +1,9 @@
+module github.com/2dust/AndroidLibV2rayLite
+
+go 1.16
+
+require (
+	github.com/xtls/xray-core v1.5.2
+	golang.org/x/mobile v0.0.0-20210220033013-bdb1ca9a1e08
+	golang.org/x/sys v0.0.0-20211214234402-4825e8c3871d
+)
--- a/AndroidLibV2rayLite/go.sum
+++ b/AndroidLibV2rayLite/go.sum
@@ -0,0 +1,535 @@
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--- a/AndroidLibV2rayLite/interact.go
+++ b/AndroidLibV2rayLite/interact.go
@@ -13,18 +13,19 @@ import (
 	"github.com/2dust/AndroidLibV2rayLite/VPN"
 	mobasset "golang.org/x/mobile/asset"

-	v2core "v2ray.com/core"
-	v2filesystem "v2ray.com/core/common/platform/filesystem"
-	v2stats "v2ray.com/core/features/stats"
-	v2serial "v2ray.com/core/infra/conf/serial"
-	v2internet "v2ray.com/core/transport/internet"
+	v2core "github.com/xtls/xray-core/core"
+	v2filesystem "github.com/xtls/xray-core/common/platform/filesystem"
+	v2stats "github.com/xtls/xray-core/features/stats"
+	v2serial "github.com/xtls/xray-core/infra/conf/serial"
+	_ "github.com/xtls/xray-core/main/distro/all"
+	v2internet "github.com/xtls/xray-core/transport/internet"

-	v2applog "v2ray.com/core/app/log"
-	v2commlog "v2ray.com/core/common/log"
+	v2applog "github.com/xtls/xray-core/app/log"
+	v2commlog "github.com/xtls/xray-core/common/log"
 )

 const (
-	v2Assert    = "v2ray.location.asset"
+	v2Assert    = "xray.location.asset"
 	assetperfix = "/dev/libv2rayfs0/asset"
 )

--- a/AndroidLibV2rayLite/libv2init.go
+++ b/AndroidLibV2rayLite/libv2init.go
@@ -1,58 +0,0 @@
-package libv2ray
-
-import (
-	// The following are necessary as they register handlers in their init functions.
-
-	// Required features. Can't remove unless there is replacements.
-	_ "v2ray.com/core/app/dispatcher"
-	_ "v2ray.com/core/app/proxyman/inbound"
-	_ "v2ray.com/core/app/proxyman/outbound"
-
-	// Other optional features.
-	_ "v2ray.com/core/app/dns"
-	_ "v2ray.com/core/app/log"
-	_ "v2ray.com/core/app/policy"
-	_ "v2ray.com/core/app/router"
-	_ "v2ray.com/core/app/stats"
-
-	// Inbound and outbound proxies.
-	_ "v2ray.com/core/proxy/blackhole"
-	_ "v2ray.com/core/proxy/dns"
-	_ "v2ray.com/core/proxy/dokodemo"
-	_ "v2ray.com/core/proxy/freedom"
-	_ "v2ray.com/core/proxy/http"
-	_ "v2ray.com/core/proxy/mtproto"
-	_ "v2ray.com/core/proxy/shadowsocks"
-	_ "v2ray.com/core/proxy/socks"
-	_ "v2ray.com/core/proxy/trojan"
-	_ "v2ray.com/core/proxy/vless/inbound"
-	_ "v2ray.com/core/proxy/vless/outbound"
-	_ "v2ray.com/core/proxy/vmess/inbound"
-	_ "v2ray.com/core/proxy/vmess/outbound"
-
-	// Transport
-	_ "v2ray.com/core/transport/internet/http"
-	_ "v2ray.com/core/transport/internet/kcp"
-	_ "v2ray.com/core/transport/internet/quic"
-	_ "v2ray.com/core/transport/internet/tcp"
-	_ "v2ray.com/core/transport/internet/tls"
-	_ "v2ray.com/core/transport/internet/udp"
-	_ "v2ray.com/core/transport/internet/websocket"
-
-	// Transport headers
-	_ "v2ray.com/core/transport/internet/headers/http"
-	_ "v2ray.com/core/transport/internet/headers/noop"
-	_ "v2ray.com/core/transport/internet/headers/srtp"
-	_ "v2ray.com/core/transport/internet/headers/tls"
-	_ "v2ray.com/core/transport/internet/headers/utp"
-	_ "v2ray.com/core/transport/internet/headers/wechat"
-	_ "v2ray.com/core/transport/internet/headers/wireguard"
-
-	// JSON config support. Choose only one from the two below.
-	// The following line loads JSON from v2ctl
-	// _ "v2ray.com/core/main/json"
-	// The following line loads JSON internally
-	_ "v2ray.com/core/main/jsonem"
-	// Load config from file or http(s)
-	// _ "v2ray.com/core/main/confloader/external"
-)
--- a/AndroidLibV2rayLite/v2logger.go
+++ b/AndroidLibV2rayLite/v2logger.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"os"

-	v2commlog "v2ray.com/core/common/log"
+	v2commlog "github.com/xtls/xray-core/common/log"
 )

 type consoleLogWriter struct {
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@

 A V2Ray client for Android, support [Xray core](https://github.com/XTLS/Xray-core) and [v2fly core](https://github.com/v2fly/v2ray-core)

-[![API](https://img.shields.io/badge/API-17%2B-yellow.svg?style=flat)](https://developer.android.com/about/versions/jelly-bean#android-4.2)
-[![Kotlin Version](https://img.shields.io/badge/Kotlin-1.4.10-blue.svg)](https://kotlinlang.org)
+[![API](https://img.shields.io/badge/API-21%2B-yellow.svg?style=flat)](https://developer.android.com/about/versions/lollipop)
+[![Kotlin Version](https://img.shields.io/badge/Kotlin-1.6.10-blue.svg)](https://kotlinlang.org)
 [![GitHub commit activity](https://img.shields.io/github/commit-activity/m/2dust/v2rayNG)](https://github.com/2dust/v2rayNG/commits/master)
 [![CodeFactor](https://www.codefactor.io/repository/github/2dust/v2rayng/badge)](https://www.codefactor.io/repository/github/2dust/v2rayng)
 [![GitHub Releases](https://img.shields.io/github/downloads/2dust/v2rayNG/latest/total?logo=github)](https://github.com/2dust/v2rayNG/releases)
@@ -16,15 +16,12 @@ A V2Ray client for Android, support [Xray core](https://github.com/XTLS/Xray-cor
 ### Usage

 #### Geoip and Geosite
-v2rayNG release already embedded domain file `geoip.dat` and `geosite.dat`. However it is (probably) not the latest and not the most complete list.
-For power user, the embedded files can be easily replaced with the following steps:
-1. Launch v2rayNG (v1.4.9+)
-2. Find existing geoip.dat and geosite.dat in `Android/data/com.v2ray.ang/files/assets` (path may differ on some Android device)
-3. Replace them with the latest [domain list](https://github.com/v2fly/domain-list-community) and [ip list](https://github.com/v2fly/geoip)
-4. Enhanced version can be found in this [repo](https://github.com/Loyalsoldier/v2ray-rules-dat) (recommend to use `geosite:geolocation-!cn` for proxy dns and routing)
-5. It is also possible to use third party dat file in the same folder, like [h2y](https://guide.v2fly.org/routing/sitedata.html#%E5%A4%96%E7%BD%AE%E7%9A%84%E5%9F%9F%E5%90%8D%E6%96%87%E4%BB%B6)
+- geoip.dat and geosite.dat files are in `Android/data/com.v2ray.ang/files/assets` (path may differ on some Android device)
+- download feature will get enhanced version in this [repo](https://github.com/Loyalsoldier/v2ray-rules-dat) (Note it need a working proxy)
+- latest official [domain list](https://github.com/v2fly/domain-list-community) and [ip list](https://github.com/v2fly/geoip) can be imported manually
+- possible to use third party dat file in the same folder, like [h2y](https://guide.v2fly.org/routing/sitedata.html#%E5%A4%96%E7%BD%AE%E7%9A%84%E5%9F%9F%E5%90%8D%E6%96%87%E4%BB%B6)

-#### See more in our [wiki](https://github.com/2dust/v2rayNG/wiki)
+### More in our [wiki](https://github.com/2dust/v2rayNG/wiki)

 ### Development guide

@@ -32,4 +29,5 @@ Android project under V2rayNG folder can be compiled directly in Android Studio,
 The aar can be compiled from the Golang project under AndroidLibV2rayLite folder. For a quick start, read guide for [Go Mobile](https://github.com/golang/go/wiki/Mobile)
 and [Makefiles for Go Developers](https://tutorialedge.net/golang/makefiles-for-go-developers/)

-v2rayNG can run on Android Emulators, with minimum Android 5.0
+v2rayNG can run on Android Emulators. For WSA, VPN permission need to be granted via
+`appops set [package name] ACTIVATE_VPN allow`
--- a/V2rayNG/app/build.gradle
+++ b/V2rayNG/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'

 android {
    compileSdkVersion Integer.parseInt("$compileSdkVer")
@@ -13,7 +12,7 @@ android {

    defaultConfig {
        applicationId "com.v2ray.ang"
-        minSdkVersion 17
+        minSdkVersion 21
        targetSdkVersion Integer.parseInt("$targetSdkVer")
        multiDexEnabled true
        versionCode 212
@@ -59,38 +58,45 @@ android {
    android.applicationVariants.all { variant ->
        // assign different version code for each output
        variant.outputs.each { output ->
-            output.versionCodeOverride =
+            output.outputFileName = "v2rayNG_" + variant.versionName + "_" + output.getFilter(com.android.build.OutputFile.ABI) + ".apk"
+
+                output.versionCodeOverride =
                    project.ext.versionCodes.get(output.getFilter(com.android.build.OutputFile.ABI), 0) *
                            1000000 + android.defaultConfig.versionCode
        }
    }
+
+    buildFeatures {
+        viewBinding true
+    }
 }

 dependencies {
-    implementation fileTree(include: ['*.jar'], dir: 'libs')
-    testImplementation 'junit:junit:4.13'
+    implementation fileTree(dir: 'libs', include: ['*.aar', '*.jar'], exclude: [])
+    testImplementation 'junit:junit:4.13.2'

-    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion"
-    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9"
+    // Androidx
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+    implementation "androidx.legacy:legacy-support-v4:1.0.0"
+    implementation "androidx.appcompat:appcompat:1.4.1"
+    implementation "com.google.android.material:material:1.5.0"
+    implementation "androidx.cardview:cardview:1.0.0"
+    implementation "androidx.preference:preference:1.0.0"
+    implementation "androidx.recyclerview:recyclerview:1.2.1"
+    implementation 'androidx.multidex:multidex:2.0.1'
+    implementation 'androidx.viewpager2:viewpager2:1.1.0-beta01'

    // Androidx ktx
-    implementation 'android.arch.lifecycle:extensions:1.1.1'
-    implementation 'android.arch.lifecycle:livedata:1.1.1'
+    implementation 'androidx.activity:activity-ktx:1.4.0'
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.1'

-    // Android support library
-    implementation "com.android.support:support-v4:$supportLibVersion"
-    implementation "com.android.support:appcompat-v7:$supportLibVersion"
-    implementation "com.android.support:design:$supportLibVersion"
-    implementation "com.android.support:cardview-v7:$supportLibVersion"
-    implementation "com.android.support:preference-v7:$supportLibVersion"
-    implementation "com.android.support:recyclerview-v7:$supportLibVersion"
-    implementation "com.android.support:multidex:1.0.3"
-    implementation 'com.android.support.constraint:constraint-layout:2.0.1'
+    //kotlin
+    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.2"

-    // DSL
-    implementation 'com.tencent:mmkv-static:1.0.19'
+    implementation 'com.tencent:mmkv-static:1.2.12'
    implementation 'com.google.code.gson:gson:2.8.6'
    implementation 'io.reactivex:rxjava:1.3.4'
    implementation 'io.reactivex:rxandroid:1.2.1'
@@ -99,23 +105,17 @@ dependencies {
    implementation 'me.dm7.barcodescanner:zxing:1.9.8'
    implementation 'com.github.jorgecastilloprz:fabprogresscircle:1.01@aar'
    implementation 'me.drakeet.support:toastcompat:1.1.0'
-
-    implementation(name: 'libv2ray', ext: 'aar')
-    //implementation(name: 'tun2socks', ext: 'aar')
+    implementation 'com.blacksquircle.ui:editorkit:2.1.1'
+    implementation 'com.blacksquircle.ui:language-base:2.1.1'
+    implementation 'com.blacksquircle.ui:language-json:2.1.1'
 }

 buildscript {
    repositories {
        google()
-        jcenter()
+        mavenCentral()
        maven { url 'https://maven.google.com' }
-    }
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlinVersion"
-    }
-}
-repositories {
-    flatDir {
-        dirs 'libs'
+        maven { url 'https://jitpack.io' }
+        jcenter()
    }
 }
--- a/V2rayNG/app/src/main/AndroidManifest.xml
+++ b/V2rayNG/app/src/main/AndroidManifest.xml
@@ -34,9 +34,11 @@
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
-        android:extractNativeLibs="true"
-        android:theme="@style/AppTheme">
+        android:theme="@style/AppTheme"
+        android:usesCleartextTraffic="true"
+        tools:targetApi="m">
        <activity
+            android:exported="true"
            android:name=".ui.MainActivity"
            android:theme="@style/AppTheme.NoActionBar"
            android:launchMode="singleTask">
@@ -57,24 +59,40 @@
                android:resource="@xml/shortcuts" />
        </activity>
        <activity
+            android:exported="false"
            android:name=".ui.ServerActivity"
            android:windowSoftInputMode="stateUnchanged" />
        <activity
+            android:exported="false"
            android:name=".ui.ServerCustomConfigActivity"
            android:windowSoftInputMode="stateUnchanged" />
-        <activity android:name=".ui.SettingsActivity" />
-        <activity android:name=".ui.PerAppProxyActivity" />
-        <activity android:name=".ui.ScannerActivity" />
-<!--        <activity android:name=".InappBuyActivity" />-->
-        <activity android:name=".ui.LogcatActivity" />
        <activity
+            android:exported="false"
+            android:name=".ui.SettingsActivity" />
+        <activity
+            android:exported="false"
+            android:name=".ui.PerAppProxyActivity" />
+        <activity
+            android:exported="false"
+            android:name=".ui.ScannerActivity" />
+        <activity
+            android:exported="false"
+            android:name=".ui.LogcatActivity" />
+        <activity
+            android:exported="false"
            android:name=".ui.RoutingSettingsActivity"
            android:windowSoftInputMode="stateUnchanged" />
-        <activity android:name=".ui.SubSettingActivity" />
-
-        <activity android:name=".ui.SubEditActivity" />
-        <activity android:name=".ui.ScScannerActivity" />
        <activity
+            android:exported="false"
+            android:name=".ui.SubSettingActivity" />
+        <activity
+            android:exported="false"
+            android:name=".ui.SubEditActivity" />
+        <activity
+            android:exported="false"
+            android:name=".ui.ScScannerActivity" />
+        <activity
+            android:exported="false"
            android:name=".ui.ScSwitchActivity"
            android:excludeFromRecents="true"
            android:process=":RunSoLibV2RayDaemon"
@@ -101,7 +119,9 @@
                android:process=":RunSoLibV2RayDaemon">
        </service>

-        <receiver android:name=".receiver.WidgetProvider"
+        <receiver
+                android:exported="true"
+                android:name=".receiver.WidgetProvider"
                android:process=":RunSoLibV2RayDaemon">
            <meta-data
                    android:name="android.appwidget.provider"
@@ -114,6 +134,7 @@
        </receiver>

        <service
+                android:exported="true"
                android:name=".service.QSTileService"
                android:icon="@drawable/ic_v"
                android:label="@string/app_tile_name"
@@ -125,6 +146,7 @@
        </service>
        <!-- =====================Tasker===================== -->
        <activity
+            android:exported="true"
            android:name=".ui.TaskerActivity"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name">
@@ -133,7 +155,9 @@
            </intent-filter>
        </activity>

-        <receiver android:name=".receiver.TaskerReceiver"
+        <receiver
+            android:exported="true"
+            android:name=".receiver.TaskerReceiver"
                android:process=":RunSoLibV2RayDaemon">
            <intent-filter>
                <action android:name="com.twofortyfouram.locale.intent.action.FIRE_SETTING" />
--- a/V2rayNG/app/src/main/assets/v2ray_config.json
+++ b/V2rayNG/app/src/main/assets/v2ray_config.json
@@ -54,7 +54,6 @@
          "users": [
            {
              "id": "a3482e88-686a-4a58-8126-99c9df64b7bf",
-              "alterId": 64,
              "security": "auto",
              "level": 8
            }
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/helper/ItemTouchHelperAdapter.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/ItemTouchHelperAdapter.java
@@ -16,8 +16,8 @@

 package com.v2ray.ang.helper;

-import android.support.v7.widget.RecyclerView;
-import android.support.v7.widget.helper.ItemTouchHelper;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.ItemTouchHelper;

 /**
 * Interface to listen for a move or dismissal event from a {@link ItemTouchHelper.Callback}.
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/helper/ItemTouchHelperViewHolder.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/ItemTouchHelperViewHolder.java
@@ -16,7 +16,7 @@

 package com.v2ray.ang.helper;

-import android.support.v7.widget.helper.ItemTouchHelper;
+import androidx.recyclerview.widget.ItemTouchHelper;

 /**
 * Interface to notify an item ViewHolder of relevant callbacks from {@link
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/helper/OnStartDragListener.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/OnStartDragListener.java
@@ -16,7 +16,7 @@

 package com.v2ray.ang.helper;

-import android.support.v7.widget.RecyclerView;
+import androidx.recyclerview.widget.RecyclerView;

 /**
 * Listener for manual initiation of a drag.
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/helper/SimpleItemTouchHelperCallback.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/SimpleItemTouchHelperCallback.java
@@ -17,9 +17,11 @@
 package com.v2ray.ang.helper;

 import android.graphics.Canvas;
-import android.support.v7.widget.GridLayoutManager;
-import android.support.v7.widget.RecyclerView;
-import android.support.v7.widget.helper.ItemTouchHelper;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.ItemTouchHelper;
+
+import org.jetbrains.annotations.NotNull;

 /**
 * An implementation of {@link ItemTouchHelper.Callback} that enables basic drag & drop and
@@ -52,7 +54,7 @@ public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {
    }

    @Override
-    public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
+    public int getMovementFlags(RecyclerView recyclerView, @NotNull RecyclerView.ViewHolder viewHolder) {
        // Set movement flags based on the layout manager
        if (recyclerView.getLayoutManager() instanceof GridLayoutManager) {
            final int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT;
@@ -66,24 +68,25 @@ public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {
    }

    @Override
-    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder source, RecyclerView.ViewHolder target) {
+    public boolean onMove(@NotNull RecyclerView recyclerView, RecyclerView.ViewHolder source, RecyclerView.ViewHolder target) {
        if (source.getItemViewType() != target.getItemViewType()) {
            return false;
        }

        // Notify the adapter of the move
-        mAdapter.onItemMove(source.getAdapterPosition(), target.getAdapterPosition());
+        mAdapter.onItemMove(source.getBindingAdapterPosition(), target.getBindingAdapterPosition());
        return true;
    }

    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int i) {
        // Notify the adapter of the dismissal
-        mAdapter.onItemDismiss(viewHolder.getAdapterPosition());
+        mAdapter.onItemDismiss(viewHolder.getBindingAdapterPosition());
    }

    @Override
-    public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
+    public void onChildDraw(@NotNull Canvas c, @NotNull RecyclerView recyclerView, @NotNull RecyclerView.ViewHolder viewHolder, float dX,
+                            float dY, int actionState, boolean isCurrentlyActive) {
        if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {
            // Fade out the view as it is swiped out of the parent's bounds
            final float alpha = ALPHA_FULL - Math.abs(dX) / (float) viewHolder.itemView.getWidth();
@@ -109,7 +112,7 @@ public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {
    }

    @Override
-    public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
+    public void clearView(@NotNull RecyclerView recyclerView, @NotNull RecyclerView.ViewHolder viewHolder) {
        super.clearView(recyclerView, viewHolder);

        mAdapter.onItemMoveCompleted();
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/AssetsUtil.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/AssetsUtil.java
@@ -1,121 +0,0 @@
-package com.v2ray.ang.util;
-
-import static android.content.Context.MODE_PRIVATE;
-
-import android.content.Context;
-import android.content.res.AssetManager;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-
-public class AssetsUtil {
-    public static boolean copyAssetFolder(AssetManager assetManager,
-                                          String fromAssetPath, String toPath) {
-        try {
-            String[] files = assetManager.list(fromAssetPath);
-            new File(toPath).mkdirs();
-            boolean res = true;
-            for (String file : files)
-                if (file.contains("."))
-                    res &= copyAsset(assetManager,
-                            fromAssetPath + "/" + file,
-                            toPath + "/" + file);
-                else
-                    res &= copyAssetFolder(assetManager,
-                            fromAssetPath + "/" + file,
-                            toPath + "/" + file);
-            return res;
-        } catch (Exception e) {
-            e.printStackTrace();
-            return false;
-        }
-    }
-
-    public static boolean copyAsset(AssetManager assetManager,
-                                    String fromAssetPath, String toPath) {
-        InputStream in = null;
-        OutputStream out = null;
-        try {
-            in = assetManager.open(fromAssetPath);
-            new File(toPath).createNewFile();
-            out = new FileOutputStream(toPath);
-            copyFile(in, out);
-            in.close();
-            return true;
-        } catch (Exception e) {
-            e.printStackTrace();
-            return false;
-        } finally {
-            try {
-                if (out != null) {
-                    out.close();
-                }
-                if (in != null) {
-                    in.close();
-                }
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        }
-    }
-
-    public static String readTextFromAssets(AssetManager assetManager, String fileName) {
-        try {
-            InputStreamReader inputReader = new InputStreamReader(assetManager.open(fileName));
-            BufferedReader bufReader = new BufferedReader(inputReader);
-            String line;
-            String Result = "";
-            while ((line = bufReader.readLine()) != null)
-                Result += line;
-            return Result;
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        return null;
-    }
-
-    public static String getAssetPath(Context context, String assetPath) {
-        InputStream in = null;
-        OutputStream out = null;
-        try {
-            context.deleteFile(assetPath);
-
-            in = context.getAssets().open(assetPath);
-            out = context.openFileOutput(assetPath, MODE_PRIVATE);
-            copyFile(in, out);
-            in.close();
-
-            String path = context.getFilesDir().toString();
-            return path + "/" + assetPath;
-
-        } catch (Exception e) {
-            e.printStackTrace();
-            return "";
-        } finally {
-            try {
-                if (out != null) {
-                    out.close();
-                }
-                if (in != null) {
-                    in.close();
-                }
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        }
-    }
-
-    private static void copyFile(InputStream in, OutputStream out) throws IOException {
-        byte[] buffer = new byte[1024];
-        int read;
-        while ((read = in.read(buffer)) != -1) {
-            out.write(buffer, 0, read);
-        }
-    }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Base64.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Base64.java
@@ -1,570 +0,0 @@
-// Portions copyright 2002, Google, Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.v2ray.ang.util;
-
-// This code was converted from code at http://iharder.sourceforge.net/base64/
-// Lots of extraneous features were removed.
-/* The original code said:
- * <p>
- * I am placing this code in the Public Domain. Do with it as you will.
- * This software comes with no guarantees or warranties but with
- * plenty of well-wishing instead!
- * Please visit
- * <a href="http://iharder.net/xmlizable">http://iharder.net/xmlizable</a>
- * periodically to check for updates or to contribute improvements.
- * </p>
- *
- * @author Robert Harder
- * @author rharder@usa.net
- * @version 1.3
- */
-
-/**
- * Base64 converter class. This code is not a complete MIME encoder;
- * it simply converts binary data to base64 data and back.
- *
- * <p>Note {@link CharBase64} is a GWT-compatible implementation of this
- * class.
- */
-public class Base64 {
-    /** Specify encoding (value is {@code true}). */
-    public final static boolean ENCODE = true;
-
-    /** Specify decoding (value is {@code false}). */
-    public final static boolean DECODE = false;
-
-    /** The equals sign (=) as a byte. */
-    private final static byte EQUALS_SIGN = (byte) '=';
-
-    /** The new line character (\n) as a byte. */
-    private final static byte NEW_LINE = (byte) '\n';
-
-    /**
-     * The 64 valid Base64 values.
-     */
-    private final static byte[] ALPHABET =
-        {(byte) 'A', (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F',
-        (byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K',
-        (byte) 'L', (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P',
-        (byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U',
-        (byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z',
-        (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e',
-        (byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j',
-        (byte) 'k', (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o',
-        (byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't',
-        (byte) 'u', (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y',
-        (byte) 'z', (byte) '0', (byte) '1', (byte) '2', (byte) '3',
-        (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8',
-        (byte) '9', (byte) '+', (byte) '/'};
-
-    /**
-     * The 64 valid web safe Base64 values.
-     */
-    private final static byte[] WEBSAFE_ALPHABET =
-        {(byte) 'A', (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F',
-        (byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K',
-        (byte) 'L', (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P',
-        (byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U',
-        (byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z',
-        (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e',
-        (byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j',
-        (byte) 'k', (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o',
-        (byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't',
-        (byte) 'u', (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y',
-        (byte) 'z', (byte) '0', (byte) '1', (byte) '2', (byte) '3',
-        (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8',
-        (byte) '9', (byte) '-', (byte) '_'};
-
-    /**
-     * Translates a Base64 value to either its 6-bit reconstruction value
-     * or a negative number indicating some other meaning.
-     **/
-    private final static byte[] DECODABET = {-9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal  0 -  8
-        -5, -5, // Whitespace: Tab and Linefeed
-        -9, -9, // Decimal 11 - 12
-        -5, // Whitespace: Carriage Return
-        -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 14 - 26
-        -9, -9, -9, -9, -9, // Decimal 27 - 31
-        -5, // Whitespace: Space
-        -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 33 - 42
-        62, // Plus sign at decimal 43
-        -9, -9, -9, // Decimal 44 - 46
-        63, // Slash at decimal 47
-        52, 53, 54, 55, 56, 57, 58, 59, 60, 61, // Numbers zero through nine
-        -9, -9, -9, // Decimal 58 - 60
-        -1, // Equals sign at decimal 61
-        -9, -9, -9, // Decimal 62 - 64
-        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, // Letters 'A' through 'N'
-        14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // Letters 'O' through 'Z'
-        -9, -9, -9, -9, -9, -9, // Decimal 91 - 96
-        26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, // Letters 'a' through 'm'
-        39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, // Letters 'n' through 'z'
-        -9, -9, -9, -9, -9 // Decimal 123 - 127
-        /*  ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 128 - 139
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 140 - 152
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 153 - 165
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 166 - 178
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 179 - 191
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 192 - 204
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 205 - 217
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 218 - 230
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 231 - 243
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9         // Decimal 244 - 255 */
-    };
-
-    /** The web safe decodabet */
-    private final static byte[] WEBSAFE_DECODABET =
-        {-9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal  0 -  8
-        -5, -5, // Whitespace: Tab and Linefeed
-        -9, -9, // Decimal 11 - 12
-        -5, // Whitespace: Carriage Return
-        -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 14 - 26
-        -9, -9, -9, -9, -9, // Decimal 27 - 31
-        -5, // Whitespace: Space
-        -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 33 - 44
-        62, // Dash '-' sign at decimal 45
-        -9, -9, // Decimal 46-47
-        52, 53, 54, 55, 56, 57, 58, 59, 60, 61, // Numbers zero through nine
-        -9, -9, -9, // Decimal 58 - 60
-        -1, // Equals sign at decimal 61
-        -9, -9, -9, // Decimal 62 - 64
-        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, // Letters 'A' through 'N'
-        14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // Letters 'O' through 'Z'
-        -9, -9, -9, -9, // Decimal 91-94
-        63, // Underscore '_' at decimal 95
-        -9, // Decimal 96
-        26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, // Letters 'a' through 'm'
-        39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, // Letters 'n' through 'z'
-        -9, -9, -9, -9, -9 // Decimal 123 - 127
-        /*  ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 128 - 139
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 140 - 152
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 153 - 165
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 166 - 178
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 179 - 191
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 192 - 204
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 205 - 217
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 218 - 230
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,     // Decimal 231 - 243
-        -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9         // Decimal 244 - 255 */
-        };
-
-    // Indicates white space in encoding
-    private final static byte WHITE_SPACE_ENC = -5;
-    // Indicates equals sign in encoding
-    private final static byte EQUALS_SIGN_ENC = -1;
-
-    /** Defeats instantiation. */
-    private Base64() {
-    }
-
-    /* ********  E N C O D I N G   M E T H O D S  ******** */
-
-    /**
-     * Encodes up to three bytes of the array <var>source</var>
-     * and writes the resulting four Base64 bytes to <var>destination</var>.
-     * The source and destination arrays can be manipulated
-     * anywhere along their length by specifying
-     * <var>srcOffset</var> and <var>destOffset</var>.
-     * This method does not check to make sure your arrays
-     * are large enough to accommodate <var>srcOffset</var> + 3 for
-     * the <var>source</var> array or <var>destOffset</var> + 4 for
-     * the <var>destination</var> array.
-     * The actual number of significant bytes in your array is
-     * given by <var>numSigBytes</var>.
-     *
-     * @param source the array to convert
-     * @param srcOffset the index where conversion begins
-     * @param numSigBytes the number of significant bytes in your array
-     * @param destination the array to hold the conversion
-     * @param destOffset the index where output will be put
-     * @param alphabet is the encoding alphabet
-     * @return the <var>destination</var> array
-     * @since 1.3
-     */
-    private static byte[] encode3to4(byte[] source, int srcOffset,
-            int numSigBytes, byte[] destination, int destOffset, byte[] alphabet) {
-        //           1         2         3
-        // 01234567890123456789012345678901 Bit position
-        // --------000000001111111122222222 Array position from threeBytes
-        // --------|    ||    ||    ||    | Six bit groups to index alphabet
-        //          >>18  >>12  >> 6  >> 0  Right shift necessary
-        //                0x3f  0x3f  0x3f  Additional AND
-
-        // Create buffer with zero-padding if there are only one or two
-        // significant bytes passed in the array.
-        // We have to shift left 24 in order to flush out the 1's that appear
-        // when Java treats a value as negative that is cast from a byte to an int.
-        int inBuff =
-                (numSigBytes > 0 ? ((source[srcOffset] << 24) >>> 8) : 0)
-                | (numSigBytes > 1 ? ((source[srcOffset + 1] << 24) >>> 16) : 0)
-                | (numSigBytes > 2 ? ((source[srcOffset + 2] << 24) >>> 24) : 0);
-
-        switch (numSigBytes) {
-            case 3:
-                destination[destOffset] = alphabet[(inBuff >>> 18)];
-                destination[destOffset + 1] = alphabet[(inBuff >>> 12) & 0x3f];
-                destination[destOffset + 2] = alphabet[(inBuff >>> 6) & 0x3f];
-                destination[destOffset + 3] = alphabet[(inBuff) & 0x3f];
-                return destination;
-            case 2:
-                destination[destOffset] = alphabet[(inBuff >>> 18)];
-                destination[destOffset + 1] = alphabet[(inBuff >>> 12) & 0x3f];
-                destination[destOffset + 2] = alphabet[(inBuff >>> 6) & 0x3f];
-                destination[destOffset + 3] = EQUALS_SIGN;
-                return destination;
-            case 1:
-                destination[destOffset] = alphabet[(inBuff >>> 18)];
-                destination[destOffset + 1] = alphabet[(inBuff >>> 12) & 0x3f];
-                destination[destOffset + 2] = EQUALS_SIGN;
-                destination[destOffset + 3] = EQUALS_SIGN;
-                return destination;
-            default:
-                return destination;
-        } // end switch
-    } // end encode3to4
-
-    /**
-     * Encodes a byte array into Base64 notation.
-     * Equivalent to calling
-     * {@code encodeBytes(source, 0, source.length)}
-     *
-     * @param source The data to convert
-     * @since 1.4
-     */
-    public static String encode(byte[] source) {
-        return encode(source, 0, source.length, ALPHABET, true);
-    }
-
-    /**
-     * Encodes a byte array into web safe Base64 notation.
-     *
-     * @param source The data to convert
-     * @param doPadding is {@code true} to pad result with '=' chars
-     *        if it does not fall on 3 byte boundaries
-     */
-    public static String encodeWebSafe(byte[] source, boolean doPadding) {
-        return encode(source, 0, source.length, WEBSAFE_ALPHABET, doPadding);
-    }
-
-    /**
-     * Encodes a byte array into Base64 notation.
-     *
-     * @param source the data to convert
-     * @param off offset in array where conversion should begin
-     * @param len length of data to convert
-     * @param alphabet the encoding alphabet
-     * @param doPadding is {@code true} to pad result with '=' chars
-     * if it does not fall on 3 byte boundaries
-     * @since 1.4
-     */
-    public static String encode(byte[] source, int off, int len, byte[] alphabet,
-                                boolean doPadding) {
-        byte[] outBuff = encode(source, off, len, alphabet, Integer.MAX_VALUE);
-        int outLen = outBuff.length;
-
-        // If doPadding is false, set length to truncate '='
-        // padding characters
-        while (doPadding == false && outLen > 0) {
-            if (outBuff[outLen - 1] != '=') {
-                break;
-            }
-            outLen -= 1;
-        }
-
-        return new String(outBuff, 0, outLen);
-    }
-
-    /**
-     * Encodes a byte array into Base64 notation.
-     *
-     * @param source the data to convert
-     * @param off offset in array where conversion should begin
-     * @param len length of data to convert
-     * @param alphabet is the encoding alphabet
-     * @param maxLineLength maximum length of one line.
-     * @return the BASE64-encoded byte array
-     */
-    public static byte[] encode(byte[] source, int off, int len, byte[] alphabet,
-            int maxLineLength) {
-        int lenDiv3 = (len + 2) / 3; // ceil(len / 3)
-        int len43 = lenDiv3 * 4;
-        byte[] outBuff = new byte[len43 // Main 4:3
-                                  + (len43 / maxLineLength)]; // New lines
-
-        int d = 0;
-        int e = 0;
-        int len2 = len - 2;
-        int lineLength = 0;
-        for (; d < len2; d += 3, e += 4) {
-
-            // The following block of code is the same as
-            // encode3to4( source, d + off, 3, outBuff, e, alphabet );
-            // but inlined for faster encoding (~20% improvement)
-            int inBuff =
-                    ((source[d + off] << 24) >>> 8)
-                    | ((source[d + 1 + off] << 24) >>> 16)
-                    | ((source[d + 2 + off] << 24) >>> 24);
-            outBuff[e] = alphabet[(inBuff >>> 18)];
-            outBuff[e + 1] = alphabet[(inBuff >>> 12) & 0x3f];
-            outBuff[e + 2] = alphabet[(inBuff >>> 6) & 0x3f];
-            outBuff[e + 3] = alphabet[(inBuff) & 0x3f];
-
-            lineLength += 4;
-            if (lineLength == maxLineLength) {
-                outBuff[e + 4] = NEW_LINE;
-                e++;
-                lineLength = 0;
-            } // end if: end of line
-        } // end for: each piece of array
-
-        if (d < len) {
-            encode3to4(source, d + off, len - d, outBuff, e, alphabet);
-
-            lineLength += 4;
-            if (lineLength == maxLineLength) {
-                // Add a last newline
-                outBuff[e + 4] = NEW_LINE;
-                e++;
-            }
-            e += 4;
-        }
-
-        assert (e == outBuff.length);
-        return outBuff;
-    }
-
-
-    /* ********  D E C O D I N G   M E T H O D S  ******** */
-
-
-    /**
-     * Decodes four bytes from array <var>source</var>
-     * and writes the resulting bytes (up to three of them)
-     * to <var>destination</var>.
-     * The source and destination arrays can be manipulated
-     * anywhere along their length by specifying
-     * <var>srcOffset</var> and <var>destOffset</var>.
-     * This method does not check to make sure your arrays
-     * are large enough to accommodate <var>srcOffset</var> + 4 for
-     * the <var>source</var> array or <var>destOffset</var> + 3 for
-     * the <var>destination</var> array.
-     * This method returns the actual number of bytes that
-     * were converted from the Base64 encoding.
-     *
-     *
-     * @param source the array to convert
-     * @param srcOffset the index where conversion begins
-     * @param destination the array to hold the conversion
-     * @param destOffset the index where output will be put
-     * @param decodabet the decodabet for decoding Base64 content
-     * @return the number of decoded bytes converted
-     * @since 1.3
-     */
-    private static int decode4to3(byte[] source, int srcOffset,
-            byte[] destination, int destOffset, byte[] decodabet) {
-        // Example: Dk==
-        if (source[srcOffset + 2] == EQUALS_SIGN) {
-            int outBuff =
-                    ((decodabet[source[srcOffset]] << 24) >>> 6)
-                    | ((decodabet[source[srcOffset + 1]] << 24) >>> 12);
-
-            destination[destOffset] = (byte) (outBuff >>> 16);
-            return 1;
-        } else if (source[srcOffset + 3] == EQUALS_SIGN) {
-            // Example: DkL=
-            int outBuff =
-                    ((decodabet[source[srcOffset]] << 24) >>> 6)
-                    | ((decodabet[source[srcOffset + 1]] << 24) >>> 12)
-                    | ((decodabet[source[srcOffset + 2]] << 24) >>> 18);
-
-            destination[destOffset] = (byte) (outBuff >>> 16);
-            destination[destOffset + 1] = (byte) (outBuff >>> 8);
-            return 2;
-        } else {
-            // Example: DkLE
-            int outBuff =
-                    ((decodabet[source[srcOffset]] << 24) >>> 6)
-                    | ((decodabet[source[srcOffset + 1]] << 24) >>> 12)
-                    | ((decodabet[source[srcOffset + 2]] << 24) >>> 18)
-                    | ((decodabet[source[srcOffset + 3]] << 24) >>> 24);
-
-            destination[destOffset] = (byte) (outBuff >> 16);
-            destination[destOffset + 1] = (byte) (outBuff >> 8);
-            destination[destOffset + 2] = (byte) (outBuff);
-            return 3;
-        }
-    } // end decodeToBytes
-
-
-    /**
-     * Decodes data from Base64 notation.
-     *
-     * @param s the string to decode (decoded in default encoding)
-     * @return the decoded data
-     * @since 1.4
-     */
-    public static byte[] decode(String s) throws Base64DecoderException {
-        byte[] bytes = s.getBytes();
-        return decode(bytes, 0, bytes.length);
-    }
-
-    /**
-     * Decodes data from web safe Base64 notation.
-     * Web safe encoding uses '-' instead of '+', '_' instead of '/'
-     *
-     * @param s the string to decode (decoded in default encoding)
-     * @return the decoded data
-     */
-    public static byte[] decodeWebSafe(String s) throws Base64DecoderException {
-        byte[] bytes = s.getBytes();
-        return decodeWebSafe(bytes, 0, bytes.length);
-    }
-
-    /**
-     * Decodes Base64 content in byte array format and returns
-     * the decoded byte array.
-     *
-     * @param source The Base64 encoded data
-     * @return decoded data
-     * @since 1.3
-     * @throws Base64DecoderException
-     */
-    public static byte[] decode(byte[] source) throws Base64DecoderException {
-        return decode(source, 0, source.length);
-    }
-
-    /**
-     * Decodes web safe Base64 content in byte array format and returns
-     * the decoded data.
-     * Web safe encoding uses '-' instead of '+', '_' instead of '/'
-     *
-     * @param source the string to decode (decoded in default encoding)
-     * @return the decoded data
-     */
-    public static byte[] decodeWebSafe(byte[] source)
-            throws Base64DecoderException {
-        return decodeWebSafe(source, 0, source.length);
-    }
-
-    /**
-     * Decodes Base64 content in byte array format and returns
-     * the decoded byte array.
-     *
-     * @param source the Base64 encoded data
-     * @param off    the offset of where to begin decoding
-     * @param len    the length of characters to decode
-     * @return decoded data
-     * @since 1.3
-     * @throws Base64DecoderException
-     */
-    public static byte[] decode(byte[] source, int off, int len)
-            throws Base64DecoderException {
-        return decode(source, off, len, DECODABET);
-    }
-
-    /**
-     * Decodes web safe Base64 content in byte array format and returns
-     * the decoded byte array.
-     * Web safe encoding uses '-' instead of '+', '_' instead of '/'
-     *
-     * @param source the Base64 encoded data
-     * @param off    the offset of where to begin decoding
-     * @param len    the length of characters to decode
-     * @return decoded data
-     */
-    public static byte[] decodeWebSafe(byte[] source, int off, int len)
-            throws Base64DecoderException {
-        return decode(source, off, len, WEBSAFE_DECODABET);
-    }
-
-    /**
-     * Decodes Base64 content using the supplied decodabet and returns
-     * the decoded byte array.
-     *
-     * @param source the Base64 encoded data
-     * @param off the offset of where to begin decoding
-     * @param len the length of characters to decode
-     * @param decodabet the decodabet for decoding Base64 content
-     * @return decoded data
-     */
-    public static byte[] decode(byte[] source, int off, int len, byte[] decodabet)
-            throws Base64DecoderException {
-        int len34 = len * 3 / 4;
-        byte[] outBuff = new byte[2 + len34]; // Upper limit on size of output
-        int outBuffPosn = 0;
-
-        byte[] b4 = new byte[4];
-        int b4Posn = 0;
-        int i = 0;
-        byte sbiCrop = 0;
-        byte sbiDecode = 0;
-        for (i = 0; i < len; i++) {
-            sbiCrop = (byte) (source[i + off] & 0x7f); // Only the low seven bits
-            sbiDecode = decodabet[sbiCrop];
-
-            if (sbiDecode >= WHITE_SPACE_ENC) { // White space Equals sign or better
-                if (sbiDecode >= EQUALS_SIGN_ENC) {
-                    // An equals sign (for padding) must not occur at position 0 or 1
-                    // and must be the last byte[s] in the encoded value
-                    if (sbiCrop == EQUALS_SIGN) {
-                        int bytesLeft = len - i;
-                        byte lastByte = (byte) (source[len - 1 + off] & 0x7f);
-                        if (b4Posn == 0 || b4Posn == 1) {
-                            throw new Base64DecoderException(
-                                    "invalid padding byte '=' at byte offset " + i);
-                        } else if ((b4Posn == 3 && bytesLeft > 2)
-                                || (b4Posn == 4 && bytesLeft > 1)) {
-                            throw new Base64DecoderException(
-                                    "padding byte '=' falsely signals end of encoded value "
-                                            + "at offset " + i);
-                        } else if (lastByte != EQUALS_SIGN && lastByte != NEW_LINE) {
-                            throw new Base64DecoderException(
-                                    "encoded value has invalid trailing byte");
-                        }
-                        break;
-                    }
-
-                    b4[b4Posn++] = sbiCrop;
-                    if (b4Posn == 4) {
-                        outBuffPosn += decode4to3(b4, 0, outBuff, outBuffPosn, decodabet);
-                        b4Posn = 0;
-                    }
-                }
-            } else {
-                throw new Base64DecoderException("Bad Base64 input character at " + i
-                        + ": " + source[i + off] + "(decimal)");
-            }
-        }
-
-        // Because web safe encoding allows non padding base64 encodes, we
-        // need to pad the rest of the b4 buffer with equal signs when
-        // b4Posn != 0.  There can be at most 2 equal signs at the end of
-        // four characters, so the b4 buffer must have two or three
-        // characters.  This also catches the case where the input is
-        // padded with EQUALS_SIGN
-        if (b4Posn != 0) {
-            if (b4Posn == 1) {
-                throw new Base64DecoderException("single trailing character at offset "
-                        + (len - 1));
-            }
-            b4[b4Posn++] = EQUALS_SIGN;
-            outBuffPosn += decode4to3(b4, 0, outBuff, outBuffPosn, decodabet);
-        }
-
-        byte[] out = new byte[outBuffPosn];
-        System.arraycopy(outBuff, 0, out, 0, outBuffPosn);
-        return out;
-    }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Base64DecoderException.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Base64DecoderException.java
@@ -1,32 +0,0 @@
-// Copyright 2002, Google, Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.v2ray.ang.util;
-
-/**
- * Exception thrown when encountering an invalid Base64 input character.
- *
- * @author nelson
- */
-public class Base64DecoderException extends Exception {
-    public Base64DecoderException() {
-        super();
-    }
-
-    public Base64DecoderException(String s) {
-        super(s);
-    }
-
-    private static final long serialVersionUID = 1L;
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/IabException.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/IabException.java
@@ -1,43 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-/**
- * Exception thrown when something went wrong with in-app billing.
- * An IabException has an associated IabResult (an error).
- * To get the IAB result that caused this exception to be thrown,
- * call {@link #getResult()}.
- */
-public class IabException extends Exception {
-    IabResult mResult;
-
-    public IabException(IabResult r) {
-        this(r, null);
-    }
-    public IabException(int response, String message) {
-        this(new IabResult(response, message));
-    }
-    public IabException(IabResult r, Exception cause) {
-        super(r.getMessage(), cause);
-        mResult = r;
-    }
-    public IabException(int response, String message, Exception cause) {
-        this(new IabResult(response, message), cause);
-    }
-
-    /** Returns the IAB result (error) that this exception signals. */
-    public IabResult getResult() { return mResult; }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/IabHelper.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/IabHelper.java
@@ -1,979 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-import android.app.Activity;
-import android.app.PendingIntent;
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentSender.SendIntentException;
-import android.content.ServiceConnection;
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.IBinder;
-import android.os.RemoteException;
-import android.text.TextUtils;
-import android.util.Log;
-
-import com.android.vending.billing.IInAppBillingService;
-
-import org.json.JSONException;
-
-import java.util.ArrayList;
-import java.util.List;
-
-
-/**
- * Provides convenience methods for in-app billing. You can create one instance of this
- * class for your application and use it to process in-app billing operations.
- * It provides synchronous (blocking) and asynchronous (non-blocking) methods for
- * many common in-app billing operations, as well as automatic signature
- * verification.
- * <p>
- * After instantiating, you must perform setup in order to start using the object.
- * To perform setup, call the {@link #startSetup} method and provide a listener;
- * that listener will be notified when setup is complete, after which (and not before)
- * you may call other methods.
- * <p>
- * After setup is complete, you will typically want to request an inventory of owned
- * items and subscriptions. See {@link #queryInventory}, {@link #queryInventoryAsync}
- * and related methods.
- * <p>
- * When you are done with this object, don't forget to call {@link #dispose}
- * to ensure proper cleanup. This object holds a binding to the in-app billing
- * service, which will leak unless you dispose of it correctly. If you created
- * the object on an Activity's onCreate method, then the recommended
- * place to dispose of it is the Activity's onDestroy method.
- * <p>
- * A note about threading: When using this object from a background thread, you may
- * call the blocking versions of methods; when using from a UI thread, call
- * only the asynchronous versions and handle the results via callbacks.
- * Also, notice that you can only call one asynchronous operation at a time;
- * attempting to start a second asynchronous operation while the first one
- * has not yet completed will result in an exception being thrown.
- *
- * @author Bruno Oliveira (Google)
- */
-public class IabHelper {
-    // Is debug logging enabled?
-    boolean mDebugLog = false;
-    String mDebugTag = "IabHelper";
-
-    // Is setup done?
-    boolean mSetupDone = false;
-
-    // Has this object been disposed of? (If so, we should ignore callbacks, etc)
-    boolean mDisposed = false;
-
-    // Are subscriptions supported?
-    boolean mSubscriptionsSupported = false;
-
-    // Is an asynchronous operation in progress?
-    // (only one at a time can be in progress)
-    boolean mAsyncInProgress = false;
-
-    // (for logging/debugging)
-    // if mAsyncInProgress == true, what asynchronous operation is in progress?
-    String mAsyncOperation = "";
-
-    // Context we were passed during initialization
-    Context mContext;
-
-    // Connection to the service
-    IInAppBillingService mService;
-    ServiceConnection mServiceConn;
-
-    // The request code used to launch purchase flow
-    int mRequestCode;
-
-    // The item type of the current purchase flow
-    String mPurchasingItemType;
-
-    // Public key for verifying signature, in base64 encoding
-    String mSignatureBase64 = null;
-
-    // Billing response codes
-    public static final int BILLING_RESPONSE_RESULT_OK = 0;
-    public static final int BILLING_RESPONSE_RESULT_USER_CANCELED = 1;
-    public static final int BILLING_RESPONSE_RESULT_BILLING_UNAVAILABLE = 3;
-    public static final int BILLING_RESPONSE_RESULT_ITEM_UNAVAILABLE = 4;
-    public static final int BILLING_RESPONSE_RESULT_DEVELOPER_ERROR = 5;
-    public static final int BILLING_RESPONSE_RESULT_ERROR = 6;
-    public static final int BILLING_RESPONSE_RESULT_ITEM_ALREADY_OWNED = 7;
-    public static final int BILLING_RESPONSE_RESULT_ITEM_NOT_OWNED = 8;
-
-    // IAB Helper error codes
-    public static final int IABHELPER_ERROR_BASE = -1000;
-    public static final int IABHELPER_REMOTE_EXCEPTION = -1001;
-    public static final int IABHELPER_BAD_RESPONSE = -1002;
-    public static final int IABHELPER_VERIFICATION_FAILED = -1003;
-    public static final int IABHELPER_SEND_INTENT_FAILED = -1004;
-    public static final int IABHELPER_USER_CANCELLED = -1005;
-    public static final int IABHELPER_UNKNOWN_PURCHASE_RESPONSE = -1006;
-    public static final int IABHELPER_MISSING_TOKEN = -1007;
-    public static final int IABHELPER_UNKNOWN_ERROR = -1008;
-    public static final int IABHELPER_SUBSCRIPTIONS_NOT_AVAILABLE = -1009;
-    public static final int IABHELPER_INVALID_CONSUMPTION = -1010;
-
-    // Keys for the responses from InAppBillingService
-    public static final String RESPONSE_CODE = "RESPONSE_CODE";
-    public static final String RESPONSE_GET_SKU_DETAILS_LIST = "DETAILS_LIST";
-    public static final String RESPONSE_BUY_INTENT = "BUY_INTENT";
-    public static final String RESPONSE_INAPP_PURCHASE_DATA = "INAPP_PURCHASE_DATA";
-    public static final String RESPONSE_INAPP_SIGNATURE = "INAPP_DATA_SIGNATURE";
-    public static final String RESPONSE_INAPP_ITEM_LIST = "INAPP_PURCHASE_ITEM_LIST";
-    public static final String RESPONSE_INAPP_PURCHASE_DATA_LIST = "INAPP_PURCHASE_DATA_LIST";
-    public static final String RESPONSE_INAPP_SIGNATURE_LIST = "INAPP_DATA_SIGNATURE_LIST";
-    public static final String INAPP_CONTINUATION_TOKEN = "INAPP_CONTINUATION_TOKEN";
-
-    // Item types
-    public static final String ITEM_TYPE_INAPP = "inapp";
-    public static final String ITEM_TYPE_SUBS = "subs";
-
-    // some fields on the getSkuDetails response bundle
-    public static final String GET_SKU_DETAILS_ITEM_LIST = "ITEM_ID_LIST";
-    public static final String GET_SKU_DETAILS_ITEM_TYPE_LIST = "ITEM_TYPE_LIST";
-
-    /**
-     * Creates an instance. After creation, it will not yet be ready to use. You must perform
-     * setup by calling {@link #startSetup} and wait for setup to complete. This constructor does not
-     * block and is safe to call from a UI thread.
-     *
-     * @param ctx             Your application or Activity context. Needed to bind to the in-app billing service.
-     * @param base64PublicKey Your application's public key, encoded in base64.
-     *                        This is used for verification of purchase signatures. You can find your app's base64-encoded
-     *                        public key in your application's page on Google Play Developer Console. Note that this
-     *                        is NOT your "developer public key".
-     */
-    public IabHelper(Context ctx, String base64PublicKey) {
-        mContext = ctx.getApplicationContext();
-        mSignatureBase64 = base64PublicKey;
-        logDebug("IAB helper created.");
-    }
-
-    /**
-     * Enables or disable debug logging through LogCat.
-     */
-    public void enableDebugLogging(boolean enable, String tag) {
-        checkNotDisposed();
-        mDebugLog = enable;
-        mDebugTag = tag;
-    }
-
-    public void enableDebugLogging(boolean enable) {
-        checkNotDisposed();
-        mDebugLog = enable;
-    }
-
-    /**
-     * Callback for setup process. This listener's {@link #onIabSetupFinished} method is called
-     * when the setup process is complete.
-     */
-    public interface OnIabSetupFinishedListener {
-        /**
-         * Called to notify that setup is complete.
-         *
-         * @param result The result of the setup process.
-         */
-        void onIabSetupFinished(IabResult result);
-    }
-
-    /**
-     * Starts the setup process. This will start up the setup process asynchronously.
-     * You will be notified through the listener when the setup process is complete.
-     * This method is safe to call from a UI thread.
-     *
-     * @param listener The listener to notify when the setup process is complete.
-     */
-    public void startSetup(final OnIabSetupFinishedListener listener) {
-        // If already set up, can't do it again.
-        checkNotDisposed();
-        if (mSetupDone) throw new IllegalStateException("IAB helper is already set up.");
-
-        // Connection to IAB service
-        logDebug("Starting in-app billing setup.");
-        mServiceConn = new ServiceConnection() {
-            @Override
-            public void onServiceDisconnected(ComponentName name) {
-                logDebug("Billing service disconnected.");
-                mService = null;
-            }
-
-            @Override
-            public void onServiceConnected(ComponentName name, IBinder service) {
-                if (mDisposed) return;
-                logDebug("Billing service connected.");
-                mService = IInAppBillingService.Stub.asInterface(service);
-                String packageName = mContext.getPackageName();
-                try {
-                    logDebug("Checking for in-app billing 3 support.");
-
-                    // check for in-app billing v3 support
-                    int response = mService.isBillingSupported(3, packageName, ITEM_TYPE_INAPP);
-                    if (response != BILLING_RESPONSE_RESULT_OK) {
-                        if (listener != null) listener.onIabSetupFinished(new IabResult(response,
-                                "Error checking for billing v3 support."));
-
-                        // if in-app purchases aren't supported, neither are subscriptions.
-                        mSubscriptionsSupported = false;
-                        return;
-                    }
-                    logDebug("In-app billing version 3 supported for " + packageName);
-
-                    // check for v3 subscriptions support
-                    response = mService.isBillingSupported(3, packageName, ITEM_TYPE_SUBS);
-                    if (response == BILLING_RESPONSE_RESULT_OK) {
-                        logDebug("Subscriptions AVAILABLE.");
-                        mSubscriptionsSupported = true;
-                    } else {
-                        logDebug("Subscriptions NOT AVAILABLE. Response: " + response);
-                    }
-
-                    mSetupDone = true;
-                } catch (RemoteException e) {
-                    if (listener != null) {
-                        listener.onIabSetupFinished(new IabResult(IABHELPER_REMOTE_EXCEPTION,
-                                "RemoteException while setting up in-app billing."));
-                    }
-                    e.printStackTrace();
-                    return;
-                }
-
-                if (listener != null) {
-                    listener.onIabSetupFinished(new IabResult(BILLING_RESPONSE_RESULT_OK, "Setup successful."));
-                }
-            }
-        };
-
-//        Intent serviceIntent = new Intent("ir.cafebazaar.pardakht.InAppBillingService.BIND");
-//        serviceIntent.setPackage("com.farsitel.bazaar");
-        Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
-        serviceIntent.setPackage("com.android.vending");
-        if (!mContext.getPackageManager().queryIntentServices(serviceIntent, 0).isEmpty()) {
-            // service available to handle that Intent
-            mContext.bindService(serviceIntent, mServiceConn, Context.BIND_AUTO_CREATE);
-        } else {
-            // no service available to handle that Intent
-            if (listener != null) {
-                listener.onIabSetupFinished(
-                        new IabResult(BILLING_RESPONSE_RESULT_BILLING_UNAVAILABLE,
-                                "Billing service unavailable on device."));
-            }
-        }
-    }
-
-    /**
-     * Dispose of object, releasing resources. It's very important to call this
-     * method when you are done with this object. It will release any resources
-     * used by it such as service connections. Naturally, once the object is
-     * disposed of, it can't be used again.
-     */
-    public void dispose() {
-        logDebug("Disposing.");
-        mSetupDone = false;
-        if (mServiceConn != null) {
-            logDebug("Unbinding from service.");
-            if (mContext != null) mContext.unbindService(mServiceConn);
-        }
-        mDisposed = true;
-        mContext = null;
-        mServiceConn = null;
-        mService = null;
-        mPurchaseListener = null;
-    }
-
-    private void checkNotDisposed() {
-        if (mDisposed)
-            throw new IllegalStateException("IabHelper was disposed of, so it cannot be used.");
-    }
-
-    /**
-     * Returns whether subscriptions are supported.
-     */
-    public boolean subscriptionsSupported() {
-        checkNotDisposed();
-        return mSubscriptionsSupported;
-    }
-
-
-    /**
-     * Callback that notifies when a purchase is finished.
-     */
-    public interface OnIabPurchaseFinishedListener {
-        /**
-         * Called to notify that an in-app purchase finished. If the purchase was successful,
-         * then the sku parameter specifies which item was purchased. If the purchase failed,
-         * the sku and extraData parameters may or may not be null, depending on how far the purchase
-         * process went.
-         *
-         * @param result The result of the purchase.
-         * @param info   The purchase information (null if purchase failed)
-         */
-        void onIabPurchaseFinished(IabResult result, Purchase info);
-    }
-
-    // The listener registered on launchPurchaseFlow, which we have to call back when
-    // the purchase finishes
-    OnIabPurchaseFinishedListener mPurchaseListener;
-
-    public void launchPurchaseFlow(Activity act, String sku, int requestCode, OnIabPurchaseFinishedListener listener) {
-        launchPurchaseFlow(act, sku, requestCode, listener, "");
-    }
-
-    public void launchPurchaseFlow(Activity act, String sku, int requestCode,
-                                   OnIabPurchaseFinishedListener listener, String extraData) {
-        launchPurchaseFlow(act, sku, ITEM_TYPE_INAPP, requestCode, listener, extraData);
-    }
-
-    public void launchSubscriptionPurchaseFlow(Activity act, String sku, int requestCode,
-                                               OnIabPurchaseFinishedListener listener) {
-        launchSubscriptionPurchaseFlow(act, sku, requestCode, listener, "");
-    }
-
-    public void launchSubscriptionPurchaseFlow(Activity act, String sku, int requestCode,
-                                               OnIabPurchaseFinishedListener listener, String extraData) {
-        launchPurchaseFlow(act, sku, ITEM_TYPE_SUBS, requestCode, listener, extraData);
-    }
-
-    /**
-     * Initiate the UI flow for an in-app purchase. Call this method to initiate an in-app purchase,
-     * which will involve bringing up the Google Play screen. The calling activity will be paused while
-     * the user interacts with Google Play, and the result will be delivered via the activity's
-     * {@link android.app.Activity#onActivityResult} method, at which point you must call
-     * this object's {@link #handleActivityResult} method to continue the purchase flow. This method
-     * MUST be called from the UI thread of the Activity.
-     *
-     * @param act         The calling activity.
-     * @param sku         The sku of the item to purchase.
-     * @param itemType    indicates if it's a product or a subscription (ITEM_TYPE_INAPP or ITEM_TYPE_SUBS)
-     * @param requestCode A request code (to differentiate from other responses --
-     *                    as in {@link android.app.Activity#startActivityForResult}).
-     * @param listener    The listener to notify when the purchase process finishes
-     * @param extraData   Extra data (developer payload), which will be returned with the purchase data
-     *                    when the purchase completes. This extra data will be permanently bound to that purchase
-     *                    and will always be returned when the purchase is queried.
-     */
-    public void launchPurchaseFlow(Activity act, String sku, String itemType, int requestCode,
-                                   OnIabPurchaseFinishedListener listener, String extraData) {
-        checkNotDisposed();
-        checkSetupDone("launchPurchaseFlow");
-        flagStartAsync("launchPurchaseFlow");
-        IabResult result;
-
-        if (itemType.equals(ITEM_TYPE_SUBS) && !mSubscriptionsSupported) {
-            IabResult r = new IabResult(IABHELPER_SUBSCRIPTIONS_NOT_AVAILABLE,
-                    "Subscriptions are not available.");
-            flagEndAsync();
-            if (listener != null) listener.onIabPurchaseFinished(r, null);
-            return;
-        }
-
-        try {
-            logDebug("Constructing buy intent for " + sku + ", item type: " + itemType);
-            Bundle buyIntentBundle = mService.getBuyIntent(3, mContext.getPackageName(), sku, itemType, extraData);
-            int response = getResponseCodeFromBundle(buyIntentBundle);
-            if (response != BILLING_RESPONSE_RESULT_OK) {
-                logError("Unable to buy item, Error response: " + getResponseDesc(response));
-                flagEndAsync();
-                result = new IabResult(response, "Unable to buy item");
-                if (listener != null) listener.onIabPurchaseFinished(result, null);
-                return;
-            }
-
-            PendingIntent pendingIntent = buyIntentBundle.getParcelable(RESPONSE_BUY_INTENT);
-            logDebug("Launching buy intent for " + sku + ". Request code: " + requestCode);
-            mRequestCode = requestCode;
-            mPurchaseListener = listener;
-            mPurchasingItemType = itemType;
-            act.startIntentSenderForResult(pendingIntent.getIntentSender(),
-                    requestCode, new Intent(),
-                    Integer.valueOf(0), Integer.valueOf(0),
-                    Integer.valueOf(0));
-        } catch (SendIntentException e) {
-            logError("SendIntentException while launching purchase flow for sku " + sku);
-            e.printStackTrace();
-            flagEndAsync();
-
-            result = new IabResult(IABHELPER_SEND_INTENT_FAILED, "Failed to send intent.");
-            if (listener != null) listener.onIabPurchaseFinished(result, null);
-        } catch (RemoteException e) {
-            logError("RemoteException while launching purchase flow for sku " + sku);
-            e.printStackTrace();
-            flagEndAsync();
-
-            result = new IabResult(IABHELPER_REMOTE_EXCEPTION, "Remote exception while starting purchase flow");
-            if (listener != null) listener.onIabPurchaseFinished(result, null);
-        }
-    }
-
-    /**
-     * Handles an activity result that's part of the purchase flow in in-app billing. If you
-     * are calling {@link #launchPurchaseFlow}, then you must call this method from your
-     * Activity's {@link android.app.Activity@onActivityResult} method. This method
-     * MUST be called from the UI thread of the Activity.
-     *
-     * @param requestCode The requestCode as you received it.
-     * @param resultCode  The resultCode as you received it.
-     * @param data        The data (Intent) as you received it.
-     * @return Returns true if the result was related to a purchase flow and was handled;
-     * false if the result was not related to a purchase, in which case you should
-     * handle it normally.
-     */
-    public boolean handleActivityResult(int requestCode, int resultCode, Intent data) {
-        IabResult result;
-        if (requestCode != mRequestCode) return false;
-
-        checkNotDisposed();
-        checkSetupDone("handleActivityResult");
-
-        // end of async purchase operation that started on launchPurchaseFlow
-        flagEndAsync();
-
-        if (data == null) {
-            logError("Null data in IAB activity result.");
-            result = new IabResult(IABHELPER_BAD_RESPONSE, "Null data in IAB result");
-            if (mPurchaseListener != null) mPurchaseListener.onIabPurchaseFinished(result, null);
-            return true;
-        }
-
-        int responseCode = getResponseCodeFromIntent(data);
-        String purchaseData = data.getStringExtra(RESPONSE_INAPP_PURCHASE_DATA);
-        String dataSignature = data.getStringExtra(RESPONSE_INAPP_SIGNATURE);
-
-        if (resultCode == Activity.RESULT_OK && responseCode == BILLING_RESPONSE_RESULT_OK) {
-            logDebug("Successful resultcode from purchase activity.");
-            logDebug("Purchase data: " + purchaseData);
-            logDebug("Data signature: " + dataSignature);
-            logDebug("Extras: " + data.getExtras());
-            logDebug("Expected item type: " + mPurchasingItemType);
-
-            if (purchaseData == null || dataSignature == null) {
-                logError("BUG: either purchaseData or dataSignature is null.");
-                logDebug("Extras: " + data.getExtras().toString());
-                result = new IabResult(IABHELPER_UNKNOWN_ERROR, "IAB returned null purchaseData or dataSignature");
-                if (mPurchaseListener != null)
-                    mPurchaseListener.onIabPurchaseFinished(result, null);
-                return true;
-            }
-
-            Purchase purchase = null;
-            try {
-                purchase = new Purchase(mPurchasingItemType, purchaseData, dataSignature);
-                String sku = purchase.getSku();
-
-                // Verify signature
-                if (!Security.verifyPurchase(mSignatureBase64, purchaseData, dataSignature)) {
-                    logError("Purchase signature verification FAILED for sku " + sku);
-                    result = new IabResult(IABHELPER_VERIFICATION_FAILED, "Signature verification failed for sku " + sku);
-                    if (mPurchaseListener != null)
-                        mPurchaseListener.onIabPurchaseFinished(result, purchase);
-                    return true;
-                }
-                logDebug("Purchase signature successfully verified.");
-            } catch (JSONException e) {
-                logError("Failed to parse purchase data.");
-                e.printStackTrace();
-                result = new IabResult(IABHELPER_BAD_RESPONSE, "Failed to parse purchase data.");
-                if (mPurchaseListener != null)
-                    mPurchaseListener.onIabPurchaseFinished(result, null);
-                return true;
-            }
-
-            if (mPurchaseListener != null) {
-                mPurchaseListener.onIabPurchaseFinished(new IabResult(BILLING_RESPONSE_RESULT_OK, "Success"), purchase);
-            }
-        } else if (resultCode == Activity.RESULT_OK) {
-            // result code was OK, but in-app billing response was not OK.
-            logDebug("Result code was OK but in-app billing response was not OK: " + getResponseDesc(responseCode));
-            if (mPurchaseListener != null) {
-                result = new IabResult(responseCode, "Problem purchashing item.");
-                mPurchaseListener.onIabPurchaseFinished(result, null);
-            }
-        } else if (resultCode == Activity.RESULT_CANCELED) {
-            logDebug("Purchase canceled - Response: " + getResponseDesc(responseCode));
-            result = new IabResult(IABHELPER_USER_CANCELLED, "User canceled.");
-            if (mPurchaseListener != null) mPurchaseListener.onIabPurchaseFinished(result, null);
-        } else {
-            logError("Purchase failed. Result code: " + Integer.toString(resultCode)
-                    + ". Response: " + getResponseDesc(responseCode));
-            result = new IabResult(IABHELPER_UNKNOWN_PURCHASE_RESPONSE, "Unknown purchase response.");
-            if (mPurchaseListener != null) mPurchaseListener.onIabPurchaseFinished(result, null);
-        }
-        return true;
-    }
-
-    public Inventory queryInventory(boolean querySkuDetails, List<String> moreSkus) throws IabException {
-        return queryInventory(querySkuDetails, moreSkus, null);
-    }
-
-    /**
-     * Queries the inventory. This will query all owned items from the server, as well as
-     * information on additional skus, if specified. This method may block or take long to execute.
-     * Do not call from a UI thread. For that, use the non-blocking version {@link #refreshInventoryAsync}.
-     *
-     * @param querySkuDetails if true, SKU details (price, description, etc) will be queried as well
-     *                        as purchase information.
-     * @param moreItemSkus    additional PRODUCT skus to query information on, regardless of ownership.
-     *                        Ignored if null or if querySkuDetails is false.
-     * @param moreSubsSkus    additional SUBSCRIPTIONS skus to query information on, regardless of ownership.
-     *                        Ignored if null or if querySkuDetails is false.
-     * @throws IabException if a problem occurs while refreshing the inventory.
-     */
-    public Inventory queryInventory(boolean querySkuDetails, List<String> moreItemSkus,
-                                    List<String> moreSubsSkus) throws IabException {
-        checkNotDisposed();
-        checkSetupDone("queryInventory");
-        try {
-            Inventory inv = new Inventory();
-            int r = queryPurchases(inv, ITEM_TYPE_INAPP);
-            if (r != BILLING_RESPONSE_RESULT_OK) {
-                throw new IabException(r, "Error refreshing inventory (querying owned items).");
-            }
-
-            if (querySkuDetails) {
-                r = querySkuDetails(ITEM_TYPE_INAPP, inv, moreItemSkus);
-                if (r != BILLING_RESPONSE_RESULT_OK) {
-                    throw new IabException(r, "Error refreshing inventory (querying prices of items).");
-                }
-            }
-
-            // if subscriptions are supported, then also query for subscriptions
-            if (mSubscriptionsSupported) {
-                r = queryPurchases(inv, ITEM_TYPE_SUBS);
-                if (r != BILLING_RESPONSE_RESULT_OK) {
-                    throw new IabException(r, "Error refreshing inventory (querying owned subscriptions).");
-                }
-
-                if (querySkuDetails) {
-                    r = querySkuDetails(ITEM_TYPE_SUBS, inv, moreItemSkus);
-                    if (r != BILLING_RESPONSE_RESULT_OK) {
-                        throw new IabException(r, "Error refreshing inventory (querying prices of subscriptions).");
-                    }
-                }
-            }
-
-            return inv;
-        } catch (RemoteException e) {
-            throw new IabException(IABHELPER_REMOTE_EXCEPTION, "Remote exception while refreshing inventory.", e);
-        } catch (JSONException e) {
-            throw new IabException(IABHELPER_BAD_RESPONSE, "Error parsing JSON response while refreshing inventory.", e);
-        }
-    }
-
-    /**
-     * Listener that notifies when an inventory query operation completes.
-     */
-    public interface QueryInventoryFinishedListener {
-        /**
-         * Called to notify that an inventory query operation completed.
-         *
-         * @param result The result of the operation.
-         * @param inv    The inventory.
-         */
-        void onQueryInventoryFinished(IabResult result, Inventory inv);
-    }
-
-
-    /**
-     * Asynchronous wrapper for inventory query. This will perform an inventory
-     * query as described in {@link #queryInventory}, but will do so asynchronously
-     * and call back the specified listener upon completion. This method is safe to
-     * call from a UI thread.
-     *
-     * @param querySkuDetails as in {@link #queryInventory}
-     * @param moreSkus        as in {@link #queryInventory}
-     * @param listener        The listener to notify when the refresh operation completes.
-     */
-    public void queryInventoryAsync(final boolean querySkuDetails,
-                                    final List<String> moreSkus,
-                                    final QueryInventoryFinishedListener listener) {
-        final Handler handler = new Handler();
-        checkNotDisposed();
-        checkSetupDone("queryInventory");
-        flagStartAsync("refresh inventory");
-        (new Thread(new Runnable() {
-            public void run() {
-                IabResult result = new IabResult(BILLING_RESPONSE_RESULT_OK, "Inventory refresh successful.");
-                Inventory inv = null;
-                try {
-                    inv = queryInventory(querySkuDetails, moreSkus);
-                } catch (IabException ex) {
-                    result = ex.getResult();
-                }
-
-                flagEndAsync();
-
-                final IabResult result_f = result;
-                final Inventory inv_f = inv;
-                if (!mDisposed && listener != null) {
-                    handler.post(new Runnable() {
-                        public void run() {
-                            listener.onQueryInventoryFinished(result_f, inv_f);
-                        }
-                    });
-                }
-            }
-        })).start();
-    }
-
-    public void queryInventoryAsync(QueryInventoryFinishedListener listener) {
-        queryInventoryAsync(true, null, listener);
-    }
-
-    public void queryInventoryAsync(boolean querySkuDetails, QueryInventoryFinishedListener listener) {
-        queryInventoryAsync(querySkuDetails, null, listener);
-    }
-
-
-    /**
-     * Consumes a given in-app product. Consuming can only be done on an item
-     * that's owned, and as a result of consumption, the user will no longer own it.
-     * This method may block or take long to return. Do not call from the UI thread.
-     * For that, see {@link #consumeAsync}.
-     *
-     * @param itemInfo The PurchaseInfo that represents the item to consume.
-     * @throws IabException if there is a problem during consumption.
-     */
-    void consume(Purchase itemInfo) throws IabException {
-        checkNotDisposed();
-        checkSetupDone("consume");
-
-        if (!itemInfo.mItemType.equals(ITEM_TYPE_INAPP)) {
-            throw new IabException(IABHELPER_INVALID_CONSUMPTION,
-                    "Items of type '" + itemInfo.mItemType + "' can't be consumed.");
-        }
-
-        try {
-            String token = itemInfo.getToken();
-            String sku = itemInfo.getSku();
-            if (token == null || token.equals("")) {
-                logError("Can't consume " + sku + ". No token.");
-                throw new IabException(IABHELPER_MISSING_TOKEN, "PurchaseInfo is missing token for sku: "
-                        + sku + " " + itemInfo);
-            }
-
-            logDebug("Consuming sku: " + sku + ", token: " + token);
-            int response = mService.consumePurchase(3, mContext.getPackageName(), token);
-            if (response == BILLING_RESPONSE_RESULT_OK) {
-                logDebug("Successfully consumed sku: " + sku);
-            } else {
-                logDebug("Error consuming consuming sku " + sku + ". " + getResponseDesc(response));
-                throw new IabException(response, "Error consuming sku " + sku);
-            }
-        } catch (RemoteException e) {
-            throw new IabException(IABHELPER_REMOTE_EXCEPTION, "Remote exception while consuming. PurchaseInfo: " + itemInfo, e);
-        }
-    }
-
-    /**
-     * Callback that notifies when a consumption operation finishes.
-     */
-    public interface OnConsumeFinishedListener {
-        /**
-         * Called to notify that a consumption has finished.
-         *
-         * @param purchase The purchase that was (or was to be) consumed.
-         * @param result   The result of the consumption operation.
-         */
-        void onConsumeFinished(Purchase purchase, IabResult result);
-    }
-
-    /**
-     * Callback that notifies when a multi-item consumption operation finishes.
-     */
-    public interface OnConsumeMultiFinishedListener {
-        /**
-         * Called to notify that a consumption of multiple items has finished.
-         *
-         * @param purchases The purchases that were (or were to be) consumed.
-         * @param results   The results of each consumption operation, corresponding to each
-         *                  sku.
-         */
-        void onConsumeMultiFinished(List<Purchase> purchases, List<IabResult> results);
-    }
-
-    /**
-     * Asynchronous wrapper to item consumption. Works like {@link #consume}, but
-     * performs the consumption in the background and notifies completion through
-     * the provided listener. This method is safe to call from a UI thread.
-     *
-     * @param purchase The purchase to be consumed.
-     * @param listener The listener to notify when the consumption operation finishes.
-     */
-    public void consumeAsync(Purchase purchase, OnConsumeFinishedListener listener) {
-        checkNotDisposed();
-        checkSetupDone("consume");
-        List<Purchase> purchases = new ArrayList<Purchase>();
-        purchases.add(purchase);
-        consumeAsyncInternal(purchases, listener, null);
-    }
-
-    /**
-     * Same as {@link consumeAsync}, but for multiple items at once.
-     *
-     * @param purchases The list of PurchaseInfo objects representing the purchases to consume.
-     * @param listener  The listener to notify when the consumption operation finishes.
-     */
-    public void consumeAsync(List<Purchase> purchases, OnConsumeMultiFinishedListener listener) {
-        checkNotDisposed();
-        checkSetupDone("consume");
-        consumeAsyncInternal(purchases, null, listener);
-    }
-
-    /**
-     * Returns a human-readable description for the given response code.
-     *
-     * @param code The response code
-     * @return A human-readable string explaining the result code.
-     * It also includes the result code numerically.
-     */
-    public static String getResponseDesc(int code) {
-        String[] iab_msgs = ("0:OK/1:User Canceled/2:Unknown/" +
-                "3:Billing Unavailable/4:Item unavailable/" +
-                "5:Developer Error/6:Error/7:Item Already Owned/" +
-                "8:Item not owned").split("/");
-        String[] iabhelper_msgs = ("0:OK/-1001:Remote exception during initialization/" +
-                "-1002:Bad response received/" +
-                "-1003:Purchase signature verification failed/" +
-                "-1004:Send intent failed/" +
-                "-1005:User cancelled/" +
-                "-1006:Unknown purchase response/" +
-                "-1007:Missing token/" +
-                "-1008:Unknown error/" +
-                "-1009:Subscriptions not available/" +
-                "-1010:Invalid consumption attempt").split("/");
-
-        if (code <= IABHELPER_ERROR_BASE) {
-            int index = IABHELPER_ERROR_BASE - code;
-            if (index >= 0 && index < iabhelper_msgs.length) return iabhelper_msgs[index];
-            else return String.valueOf(code) + ":Unknown IAB Helper Error";
-        } else if (code < 0 || code >= iab_msgs.length)
-            return String.valueOf(code) + ":Unknown";
-        else
-            return iab_msgs[code];
-    }
-
-
-    // Checks that setup was done; if not, throws an exception.
-    void checkSetupDone(String operation) {
-        if (!mSetupDone) {
-            logError("Illegal state for operation (" + operation + "): IAB helper is not set up.");
-            throw new IllegalStateException("IAB helper is not set up. Can't perform operation: " + operation);
-        }
-    }
-
-    // Workaround to bug where sometimes response codes come as Long instead of Integer
-    int getResponseCodeFromBundle(Bundle b) {
-        Object o = b.get(RESPONSE_CODE);
-        if (o == null) {
-            logDebug("Bundle with null response code, assuming OK (known issue)");
-            return BILLING_RESPONSE_RESULT_OK;
-        } else if (o instanceof Integer) return ((Integer) o).intValue();
-        else if (o instanceof Long) return (int) ((Long) o).longValue();
-        else {
-            logError("Unexpected type for bundle response code.");
-            logError(o.getClass().getName());
-            throw new RuntimeException("Unexpected type for bundle response code: " + o.getClass().getName());
-        }
-    }
-
-    // Workaround to bug where sometimes response codes come as Long instead of Integer
-    int getResponseCodeFromIntent(Intent i) {
-        Object o = i.getExtras().get(RESPONSE_CODE);
-        if (o == null) {
-            logError("Intent with no response code, assuming OK (known issue)");
-            return BILLING_RESPONSE_RESULT_OK;
-        } else if (o instanceof Integer) return ((Integer) o).intValue();
-        else if (o instanceof Long) return (int) ((Long) o).longValue();
-        else {
-            logError("Unexpected type for intent response code.");
-            logError(o.getClass().getName());
-            throw new RuntimeException("Unexpected type for intent response code: " + o.getClass().getName());
-        }
-    }
-
-    void flagStartAsync(String operation) {
-        if (mAsyncInProgress) throw new IllegalStateException("Can't start async operation (" +
-                operation + ") because another async operation(" + mAsyncOperation + ") is in progress.");
-        mAsyncOperation = operation;
-        mAsyncInProgress = true;
-        logDebug("Starting async operation: " + operation);
-    }
-
-    void flagEndAsync() {
-        logDebug("Ending async operation: " + mAsyncOperation);
-        mAsyncOperation = "";
-        mAsyncInProgress = false;
-    }
-
-
-    int queryPurchases(Inventory inv, String itemType) throws JSONException, RemoteException {
-        // Query purchases
-        logDebug("Querying owned items, item type: " + itemType);
-        logDebug("Package name: " + mContext.getPackageName());
-        boolean verificationFailed = false;
-        String continueToken = null;
-
-        do {
-            logDebug("Calling getPurchases with continuation token: " + continueToken);
-            Bundle ownedItems = mService.getPurchases(3, mContext.getPackageName(),
-                    itemType, continueToken);
-
-            int response = getResponseCodeFromBundle(ownedItems);
-            logDebug("Owned items response: " + String.valueOf(response));
-            if (response != BILLING_RESPONSE_RESULT_OK) {
-                logDebug("getPurchases() failed: " + getResponseDesc(response));
-                return response;
-            }
-            if (!ownedItems.containsKey(RESPONSE_INAPP_ITEM_LIST)
-                    || !ownedItems.containsKey(RESPONSE_INAPP_PURCHASE_DATA_LIST)
-                    || !ownedItems.containsKey(RESPONSE_INAPP_SIGNATURE_LIST)) {
-                logError("Bundle returned from getPurchases() doesn't contain required fields.");
-                return IABHELPER_BAD_RESPONSE;
-            }
-
-            ArrayList<String> ownedSkus = ownedItems.getStringArrayList(
-                    RESPONSE_INAPP_ITEM_LIST);
-            ArrayList<String> purchaseDataList = ownedItems.getStringArrayList(
-                    RESPONSE_INAPP_PURCHASE_DATA_LIST);
-            ArrayList<String> signatureList = ownedItems.getStringArrayList(
-                    RESPONSE_INAPP_SIGNATURE_LIST);
-
-            for (int i = 0; i < purchaseDataList.size(); ++i) {
-                String purchaseData = purchaseDataList.get(i);
-                String signature = signatureList.get(i);
-                String sku = ownedSkus.get(i);
-                if (Security.verifyPurchase(mSignatureBase64, purchaseData, signature)) {
-                    logDebug("Sku is owned: " + sku);
-                    Purchase purchase = new Purchase(itemType, purchaseData, signature);
-
-                    if (TextUtils.isEmpty(purchase.getToken())) {
-                        logWarn("BUG: empty/null token!");
-                        logDebug("Purchase data: " + purchaseData);
-                    }
-
-                    // Record ownership and token
-                    inv.addPurchase(purchase);
-                } else {
-                    logWarn("Purchase signature verification **FAILED**. Not adding item.");
-                    logDebug("   Purchase data: " + purchaseData);
-                    logDebug("   Signature: " + signature);
-                    verificationFailed = true;
-                }
-            }
-
-            continueToken = ownedItems.getString(INAPP_CONTINUATION_TOKEN);
-            logDebug("Continuation token: " + continueToken);
-        } while (!TextUtils.isEmpty(continueToken));
-
-        return verificationFailed ? IABHELPER_VERIFICATION_FAILED : BILLING_RESPONSE_RESULT_OK;
-    }
-
-    int querySkuDetails(String itemType, Inventory inv, List<String> moreSkus)
-            throws RemoteException, JSONException {
-        logDebug("Querying SKU details.");
-        ArrayList<String> skuList = new ArrayList<String>();
-        skuList.addAll(inv.getAllOwnedSkus(itemType));
-        if (moreSkus != null) {
-            for (String sku : moreSkus) {
-                if (!skuList.contains(sku)) {
-                    skuList.add(sku);
-                }
-            }
-        }
-
-        if (skuList.size() == 0) {
-            logDebug("queryPrices: nothing to do because there are no SKUs.");
-            return BILLING_RESPONSE_RESULT_OK;
-        }
-
-        Bundle querySkus = new Bundle();
-        querySkus.putStringArrayList(GET_SKU_DETAILS_ITEM_LIST, skuList);
-        Bundle skuDetails = mService.getSkuDetails(3, mContext.getPackageName(),
-                itemType, querySkus);
-
-        if (!skuDetails.containsKey(RESPONSE_GET_SKU_DETAILS_LIST)) {
-            int response = getResponseCodeFromBundle(skuDetails);
-            if (response != BILLING_RESPONSE_RESULT_OK) {
-                logDebug("getSkuDetails() failed: " + getResponseDesc(response));
-                return response;
-            } else {
-                logError("getSkuDetails() returned a bundle with neither an error nor a detail list.");
-                return IABHELPER_BAD_RESPONSE;
-            }
-        }
-
-        ArrayList<String> responseList = skuDetails.getStringArrayList(
-                RESPONSE_GET_SKU_DETAILS_LIST);
-
-        for (String thisResponse : responseList) {
-            SkuDetails d = new SkuDetails(itemType, thisResponse);
-            logDebug("Got sku details: " + d);
-            inv.addSkuDetails(d);
-        }
-        return BILLING_RESPONSE_RESULT_OK;
-    }
-
-
-    void consumeAsyncInternal(final List<Purchase> purchases,
-                              final OnConsumeFinishedListener singleListener,
-                              final OnConsumeMultiFinishedListener multiListener) {
-        final Handler handler = new Handler();
-        flagStartAsync("consume");
-        (new Thread(new Runnable() {
-            public void run() {
-                final List<IabResult> results = new ArrayList<IabResult>();
-                for (Purchase purchase : purchases) {
-                    try {
-                        consume(purchase);
-                        results.add(new IabResult(BILLING_RESPONSE_RESULT_OK, "Successful consume of sku " + purchase.getSku()));
-                    } catch (IabException ex) {
-                        results.add(ex.getResult());
-                    }
-                }
-
-                flagEndAsync();
-                if (!mDisposed && singleListener != null) {
-                    handler.post(new Runnable() {
-                        public void run() {
-                            singleListener.onConsumeFinished(purchases.get(0), results.get(0));
-                        }
-                    });
-                }
-                if (!mDisposed && multiListener != null) {
-                    handler.post(new Runnable() {
-                        public void run() {
-                            multiListener.onConsumeMultiFinished(purchases, results);
-                        }
-                    });
-                }
-            }
-        })).start();
-    }
-
-    void logDebug(String msg) {
-        if (mDebugLog) Log.d(mDebugTag, msg);
-    }
-
-    void logError(String msg) {
-        Log.e(mDebugTag, "In-app billing error: " + msg);
-    }
-
-    void logWarn(String msg) {
-        Log.w(mDebugTag, "In-app billing warning: " + msg);
-    }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/IabResult.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/IabResult.java
@@ -1,45 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-/**
- * Represents the result of an in-app billing operation.
- * A result is composed of a response code (an integer) and possibly a
- * message (String). You can get those by calling
- * {@link #getResponse} and {@link #getMessage()}, respectively. You
- * can also inquire whether a result is a success or a failure by
- * calling {@link #isSuccess()} and {@link #isFailure()}.
- */
-public class IabResult {
-    int mResponse;
-    String mMessage;
-
-    public IabResult(int response, String message) {
-        mResponse = response;
-        if (message == null || message.trim().length() == 0) {
-            mMessage = IabHelper.getResponseDesc(response);
-        }
-        else {
-            mMessage = message + " (response: " + IabHelper.getResponseDesc(response) + ")";
-        }
-    }
-    public int getResponse() { return mResponse; }
-    public String getMessage() { return mMessage; }
-    public boolean isSuccess() { return mResponse == IabHelper.BILLING_RESPONSE_RESULT_OK; }
-    public boolean isFailure() { return !isSuccess(); }
-    public String toString() { return "IabResult: " + getMessage(); }
-}
-
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Inventory.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Inventory.java
@@ -1,91 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Represents a block of information about in-app items.
- * An Inventory is returned by such methods as {@link IabHelper#queryInventory}.
- */
-public class Inventory {
-    Map<String,SkuDetails> mSkuMap = new HashMap<String,SkuDetails>();
-    Map<String,Purchase> mPurchaseMap = new HashMap<String,Purchase>();
-
-    Inventory() { }
-
-    /** Returns the listing details for an in-app product. */
-    public SkuDetails getSkuDetails(String sku) {
-        return mSkuMap.get(sku);
-    }
-
-    /** Returns purchase information for a given product, or null if there is no purchase. */
-    public Purchase getPurchase(String sku) {
-        return mPurchaseMap.get(sku);
-    }
-
-    /** Returns whether or not there exists a purchase of the given product. */
-    public boolean hasPurchase(String sku) {
-        return mPurchaseMap.containsKey(sku);
-    }
-
-    /** Return whether or not details about the given product are available. */
-    public boolean hasDetails(String sku) {
-        return mSkuMap.containsKey(sku);
-    }
-
-    /**
-     * Erase a purchase (locally) from the inventory, given its product ID. This just
-     * modifies the Inventory object locally and has no effect on the server! This is
-     * useful when you have an existing Inventory object which you know to be up to date,
-     * and you have just consumed an item successfully, which means that erasing its
-     * purchase data from the Inventory you already have is quicker than querying for
-     * a new Inventory.
-     */
-    public void erasePurchase(String sku) {
-        if (mPurchaseMap.containsKey(sku)) mPurchaseMap.remove(sku);
-    }
-
-    /** Returns a list of all owned product IDs. */
-    List<String> getAllOwnedSkus() {
-        return new ArrayList<String>(mPurchaseMap.keySet());
-    }
-
-    /** Returns a list of all owned product IDs of a given type */
-    List<String> getAllOwnedSkus(String itemType) {
-        List<String> result = new ArrayList<String>();
-        for (Purchase p : mPurchaseMap.values()) {
-            if (p.getItemType().equals(itemType)) result.add(p.getSku());
-        }
-        return result;
-    }
-
-    /** Returns a list of all purchases. */
-    List<Purchase> getAllPurchases() {
-        return new ArrayList<Purchase>(mPurchaseMap.values());
-    }
-
-    void addSkuDetails(SkuDetails d) {
-        mSkuMap.put(d.getSku(), d);
-    }
-
-    void addPurchase(Purchase p) {
-        mPurchaseMap.put(p.getSku(), p);
-    }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/LogRecorder.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/LogRecorder.java
@@ -1,540 +0,0 @@
-package com.v2ray.ang.util;
-
-import android.content.Context;
-import android.os.Environment;
-import android.os.Handler;
-import android.os.Message;
-import android.text.TextUtils;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-
-/**
- * Reference to http://blog.csdn.net/way_ping_li/article/details/8487866
- * and improved some features...
- */
-public class LogRecorder {
-
-    public static final int LOG_LEVEL_NO_SET = 0;
-
-    public static final int LOG_BUFFER_MAIN = 1;
-    public static final int LOG_BUFFER_SYSTEM = 1 << 1;
-    public static final int LOG_BUFFER_RADIO = 1 << 2;
-    public static final int LOG_BUFFER_EVENTS = 1 << 3;
-    public static final int LOG_BUFFER_KERNEL = 1 << 4; // not be supported by now
-
-    public static final int LOG_BUFFER_DEFAULT = LOG_BUFFER_MAIN | LOG_BUFFER_SYSTEM;
-
-    public static final int INVALID_PID = -1;
-
-    public String mFileSuffix;
-    public String mFolderPath;
-    public int mFileSizeLimitation;
-    public int mLevel;
-    public List<String> mFilterTags = new ArrayList<>();
-    public int mPID = INVALID_PID;
-
-    public boolean mUseLogcatFileOut = false;
-
-    private LogDumper mLogDumper = null;
-
-    public static final int EVENT_RESTART_LOG = 1001;
-
-    private RestartHandler mHandler;
-
-    private static class RestartHandler extends Handler {
-        final LogRecorder logRecorder;
-        public RestartHandler(LogRecorder logRecorder) {
-            this.logRecorder = logRecorder;
-        }
-
-        @Override
-        public void handleMessage(Message msg) {
-            if (msg.what == EVENT_RESTART_LOG) {
-                logRecorder.stop();
-                logRecorder.start();
-            }
-        }
-    }
-
-    public LogRecorder() {
-        mHandler = new RestartHandler(this);
-    }
-
-    public void start() {
-        // make sure the out folder exist
-        // TODO support multi-phase path
-        File file = new File(mFolderPath);
-        if (!file.exists()) {
-            file.mkdirs();
-        }
-
-        String cmdStr = collectLogcatCommand();
-
-        if (mLogDumper != null) {
-            mLogDumper.stopDumping();
-            mLogDumper = null;
-        }
-
-        mLogDumper = new LogDumper(mFolderPath, mFileSuffix, mFileSizeLimitation, cmdStr, mHandler);
-        mLogDumper.start();
-    }
-
-    public void stop() {
-        // TODO maybe should clean the log buffer first?
-        if (mLogDumper != null) {
-            mLogDumper.stopDumping();
-            mLogDumper = null;
-        }
-    }
-
-    private String collectLogcatCommand() {
-        StringBuilder stringBuilder = new StringBuilder();
-        final String SPACE = " ";
-        stringBuilder.append("logcat");
-
-        // TODO select ring buffer, -b
-
-        // TODO set out format
-        stringBuilder.append(SPACE);
-        stringBuilder.append("-v time");
-
-        // append tag filters
-        String levelStr = getLevelStr();
-
-        if (!mFilterTags.isEmpty()) {
-            stringBuilder.append(SPACE);
-            stringBuilder.append("-s");
-            for (int i = 0; i < mFilterTags.size(); i++) {
-                String tag = mFilterTags.get(i) + ":" + levelStr;
-                stringBuilder.append(SPACE);
-                stringBuilder.append(tag);
-            }
-        } else {
-            if (!TextUtils.isEmpty(levelStr)) {
-                stringBuilder.append(SPACE);
-                stringBuilder.append("*:" + levelStr);
-            }
-        }
-
-        // logcat -f , but the rotated count default is 4?
-        // can`t be sure to use that feature
-        if (mPID != INVALID_PID) {
-            mUseLogcatFileOut = false;
-            String pidStr = adjustPIDStr();
-            if (!TextUtils.isEmpty(pidStr)) {
-                stringBuilder.append(SPACE);
-                stringBuilder.append("|");
-                stringBuilder.append(SPACE);
-                stringBuilder.append("grep (" + pidStr + ")");
-            }
-        }
-
-        return stringBuilder.toString();
-    }
-
-    private String getLevelStr() {
-        switch (mLevel) {
-            case 2:
-                return "V";
-            case 3:
-                return "D";
-            case 4:
-                return "I";
-            case 5:
-                return "W";
-            case 6:
-                return "E";
-            case 7:
-                return "F";
-        }
-
-        return "V";
-    }
-
-    /**
-     * Android`s user app pid is bigger than 1000.
-     *
-     * @return
-     */
-    private String adjustPIDStr() {
-        if (mPID == INVALID_PID) {
-            return null;
-        }
-
-        String pidStr = String.valueOf(mPID);
-        int length = pidStr.length();
-        if (length < 4) {
-            pidStr = " 0" + pidStr;
-        }
-
-        if (length == 4) {
-            pidStr = " " + pidStr;
-        }
-
-        return pidStr;
-    }
-
-
-    private class LogDumper extends Thread {
-        final String logPath;
-        final String logFileSuffix;
-        final int logFileLimitation;
-        final String logCmd;
-
-        final RestartHandler restartHandler;
-
-        private Process logcatProc;
-        private BufferedReader mReader = null;
-        private FileOutputStream out = null;
-
-        private boolean mRunning = true;
-        final private Object mRunningLock = new Object();
-
-        private long currentFileSize;
-
-        public LogDumper(String folderPath, String suffix,
-                         int fileSizeLimitation, String command,
-                         RestartHandler handler) {
-            logPath = folderPath;
-            logFileSuffix = suffix;
-            logFileLimitation = fileSizeLimitation;
-            logCmd = command;
-            restartHandler = handler;
-
-            String date = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss")
-                    .format(new Date(System.currentTimeMillis()));
-            String fileName = (TextUtils.isEmpty(logFileSuffix)) ? date : (logFileSuffix + "-"+ date);
-            try {
-                out = new FileOutputStream(new File(logPath, fileName + ".log"));
-            } catch (FileNotFoundException e) {
-                e.printStackTrace();
-            }
-        }
-
-        public void stopDumping() {
-            synchronized (mRunningLock) {
-                mRunning = false;
-            }
-        }
-
-        @Override
-        public void run() {
-            try {
-                logcatProc = Runtime.getRuntime().exec(logCmd);
-                mReader = new BufferedReader(new InputStreamReader(
-                        logcatProc.getInputStream()), 1024);
-                String line = null;
-                while (mRunning && (line = mReader.readLine()) != null) {
-                    if (!mRunning) {
-                        break;
-                    }
-                    if (line.length() == 0) {
-                        continue;
-                    }
-                    if (out != null && !line.isEmpty()) {
-                        byte[] data = (line + "\n").getBytes();
-                        out.write(data);
-                        if (logFileLimitation != 0) {
-	                        currentFileSize += data.length;
-	                        if (currentFileSize > logFileLimitation*1024) {
-	                            restartHandler.sendEmptyMessage(EVENT_RESTART_LOG);
-	                            break;
-	                        }
-                        }
-                    }
-                }
-
-            } catch (IOException e) {
-                e.printStackTrace();
-            } finally {
-                if (logcatProc != null) {
-                    logcatProc.destroy();
-                    logcatProc = null;
-                }
-                if (mReader != null) {
-                    try {
-                        mReader.close();
-                        mReader = null;
-                    } catch (IOException e) {
-                        e.printStackTrace();
-                    }
-                }
-                if (out != null) {
-                    try {
-                        out.close();
-                    } catch (IOException e) {
-                        e.printStackTrace();
-                    }
-                    out = null;
-                }
-            }
-        }
-    }
-
-    public static class Builder {
-
-        /**
-         * context object
-         */
-        private Context mContext;
-
-        /**
-         * the folder name that we save log files to,
-         * just folder name, not the whole path,
-         * if set this, will save log files to /sdcard/$mLogFolderName folder,
-         * use /sdcard/$ApplicationName as default.
-         */
-        private String mLogFolderName;
-
-        /**
-         * the whole folder path that we save log files to,
-         * this setting`s priority is bigger than folder name.
-         */
-        private String mLogFolderPath;
-
-        /**
-         * the log file suffix,
-         * if this is sot, it will be appended to log file name automatically
-         */
-        private String mLogFileNameSuffix = "";
-
-        /**
-         * single log file size limitation,
-         * in k-bytes, ex. set to 16, is 16KB limitation.
-         */
-        private int mLogFileSizeLimitation = 0;
-
-        /**
-         * log level, see android.util.Log, 2 - 7,
-         * if not be set, will use verbose as default
-         */
-        private int mLogLevel = LogRecorder.LOG_LEVEL_NO_SET;
-
-        /**
-         * can set several filter tags
-         * logcat -s ActivityManager:V SystemUI:V
-         */
-        private List<String> mLogFilterTags = new ArrayList<>();
-
-        /**
-         * filter through pid, by setting this with your APP PID,
-         * the log recorder will just record the APP`s own log,
-         * use one call: android.os.Process.myPid().
-         */
-        private int mPID = LogRecorder.INVALID_PID;
-
-        /**
-         * which log buffer to catch...
-         * <p/>
-         * Request alternate ring buffer, 'main', 'system', 'radio'
-         * or 'events'. Multiple -b parameters are allowed and the
-         * results are interleaved.
-         * <p/>
-         * The default is -b main -b system.
-         */
-        private int mLogBuffersSelected = LogRecorder.LOG_BUFFER_DEFAULT;
-
-        /**
-         * log output format, don`t support config yet, use $time format as default.
-         * <p/>
-         * Log messages contain a number of metadata fields, in addition to the tag and priority.
-         * You can modify the output format for messages so that they display a specific metadata
-         * field. To do so, you use the -v option and specify one of the supported output formats
-         * listed below.
-         * <p/>
-         * brief      — Display priority/tag and PID of the process issuing the message.
-         * process    — Display PID only.
-         * tag        — Display the priority/tag only.
-         * thread     - Display the priority, tag, and the PID(process ID) and TID(thread ID)
-         * of the thread issuing the message.
-         * raw        — Display the raw log message, with no other metadata fields.
-         * time       — Display the date, invocation time, priority/tag, and PID of
-         * the process issuing the message.
-         * threadtime — Display the date, invocation time, priority, tag, and the PID(process ID)
-         * and TID(thread ID) of the thread issuing the message.
-         * long       — Display all metadata fields and separate messages with blank lines.
-         */
-        private int mLogOutFormat;
-
-        /**
-         * set log out folder name
-         *
-         * @param logFolderName folder name
-         * @return The same Builder.
-         */
-        public Builder setLogFolderName(String logFolderName) {
-            this.mLogFolderName = logFolderName;
-            return this;
-        }
-
-        /**
-         * set log out folder path
-         *
-         * @param logFolderPath out folder absolute path
-         * @return the same Builder
-         */
-        public Builder setLogFolderPath(String logFolderPath) {
-            this.mLogFolderPath = logFolderPath;
-            return this;
-        }
-
-        /**
-         * set log file name suffix
-         *
-         * @param logFileNameSuffix auto appened suffix
-         * @return the same Builder
-         */
-        public Builder setLogFileNameSuffix(String logFileNameSuffix) {
-            this.mLogFileNameSuffix = logFileNameSuffix;
-            return this;
-        }
-
-        /**
-         * set the file size limitation
-         *
-         * @param fileSizeLimitation file size limitation in KB
-         * @return the same Builder
-         */
-        public Builder setLogFileSizeLimitation(int fileSizeLimitation) {
-            this.mLogFileSizeLimitation = fileSizeLimitation;
-            return this;
-        }
-
-        /**
-         * set the log level
-         *
-         * @param logLevel log level, 2-7
-         * @return the same Builder
-         */
-        public Builder setLogLevel(int logLevel) {
-            this.mLogLevel = logLevel;
-            return this;
-        }
-
-        /**
-         * add log filterspec tag name, can add multiple ones,
-         * they use the same log level set by setLogLevel()
-         *
-         * @param tag tag name
-         * @return the same Builder
-         */
-        public Builder addLogFilterTag(String tag) {
-            mLogFilterTags.add(tag);
-            return this;
-        }
-
-        /**
-         * which process`s log
-         *
-         * @param mPID process id
-         * @return the same Builder
-         */
-        public Builder setPID(int mPID) {
-            this.mPID = mPID;
-            return this;
-        }
-
-        /**
-         * -b radio, -b main, -b system, -b events
-         * -b main -b system as default
-         *
-         * @param logBuffersSelected one of
-         *                           LOG_BUFFER_MAIN = 1 << 0;
-         *                           LOG_BUFFER_SYSTEM = 1 << 1;
-         *                           LOG_BUFFER_RADIO = 1 << 2;
-         *                           LOG_BUFFER_EVENTS = 1 << 3;
-         *                           LOG_BUFFER_KERNEL = 1 << 4;
-         * @return the same Builder
-         */
-        public Builder setLogBufferSelected(int logBuffersSelected) {
-            this.mLogBuffersSelected = logBuffersSelected;
-            return this;
-        }
-
-        /**
-         * sets log out format, -v parameter
-         *
-         * @param logOutFormat out format, like -v time
-         * @return the same Builder
-         */
-        public Builder setLogOutFormat(int logOutFormat) {
-            this.mLogOutFormat = mLogOutFormat;
-            return this;
-        }
-
-        public Builder(Context context) {
-            mContext = context;
-        }
-
-        /**
-         * call this only if mLogFolderName and mLogFolderPath not
-         * be set both.
-         *
-         * @return
-         */
-        private void applyAppNameAsOutfolderName() {
-            try {
-                String appName = mContext.getPackageName();
-                String versionName = mContext.getPackageManager().getPackageInfo(
-                        appName, 0).versionName;
-                int versionCode = mContext.getPackageManager()
-                        .getPackageInfo(appName, 0).versionCode;
-                mLogFolderName = appName + "-" + versionName + "-" + versionCode;
-                mLogFolderPath = applyOutfolderPath();
-            } catch (Exception e) {
-            }
-        }
-
-        private String applyOutfolderPath() {
-            String outPath = "";
-            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
-                outPath = Environment.getExternalStorageDirectory()
-                        .getAbsolutePath() + File.separator + mLogFolderName;
-            }
-
-            return outPath;
-        }
-
-        /**
-         * Combine all of the options that have been set and return
-         * a new {@link LogRecorder} object.
-         */
-        public LogRecorder build() {
-            LogRecorder logRecorder = new LogRecorder();
-
-            // no folder name & folder path be set
-            if (TextUtils.isEmpty(mLogFolderName)
-                    && TextUtils.isEmpty(mLogFolderPath)) {
-                applyAppNameAsOutfolderName();
-            }
-
-            // make sure out path be set
-            if (TextUtils.isEmpty(mLogFolderPath)) {
-                mLogFolderPath = applyOutfolderPath();
-            }
-
-            logRecorder.mFolderPath = mLogFolderPath;
-            logRecorder.mFileSuffix = mLogFileNameSuffix;
-            logRecorder.mFileSizeLimitation = mLogFileSizeLimitation;
-            logRecorder.mLevel = mLogLevel;
-            if (!mLogFilterTags.isEmpty()) {
-                for (int i = 0; i < mLogFilterTags.size(); i++) {
-                    logRecorder.mFilterTags.add(mLogFilterTags.get(i));
-                }
-            }
-            logRecorder.mPID = mPID;
-
-            return logRecorder;
-        }
-    }
-
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Purchase.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Purchase.java
@@ -1,63 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-/**
- * Represents an in-app billing purchase.
- */
-public class Purchase {
-    String mItemType;  // ITEM_TYPE_INAPP or ITEM_TYPE_SUBS
-    String mOrderId;
-    String mPackageName;
-    String mSku;
-    long mPurchaseTime;
-    int mPurchaseState;
-    String mDeveloperPayload;
-    String mToken;
-    String mOriginalJson;
-    String mSignature;
-
-    public Purchase(String itemType, String jsonPurchaseInfo, String signature) throws JSONException {
-        mItemType = itemType;
-        mOriginalJson = jsonPurchaseInfo;
-        JSONObject o = new JSONObject(mOriginalJson);
-        mOrderId = o.optString("orderId");
-        mPackageName = o.optString("packageName");
-        mSku = o.optString("productId");
-        mPurchaseTime = o.optLong("purchaseTime");
-        mPurchaseState = o.optInt("purchaseState");
-        mDeveloperPayload = o.optString("developerPayload");
-        mToken = o.optString("token", o.optString("purchaseToken"));
-        mSignature = signature;
-    }
-
-    public String getItemType() { return mItemType; }
-    public String getOrderId() { return mOrderId; }
-    public String getPackageName() { return mPackageName; }
-    public String getSku() { return mSku; }
-    public long getPurchaseTime() { return mPurchaseTime; }
-    public int getPurchaseState() { return mPurchaseState; }
-    public String getDeveloperPayload() { return mDeveloperPayload; }
-    public String getToken() { return mToken; }
-    public String getOriginalJson() { return mOriginalJson; }
-    public String getSignature() { return mSignature; }
-
-    @Override
-    public String toString() { return "PurchaseInfo(type:" + mItemType + "):" + mOriginalJson; }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Security.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Security.java
@@ -1,119 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-import android.text.TextUtils;
-import android.util.Log;
-
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.PublicKey;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.X509EncodedKeySpec;
-
-/**
- * Security-related methods. For a secure implementation, all of this code
- * should be implemented on a server that communicates with the
- * application on the device. For the sake of simplicity and clarity of this
- * example, this code is included here and is executed on the device. If you
- * must verify the purchases on the phone, you should obfuscate this code to
- * make it harder for an attacker to replace the code with stubs that treat all
- * purchases as verified.
- */
-public class Security {
-    private static final String TAG = "IABUtil/Security";
-
-    private static final String KEY_FACTORY_ALGORITHM = "RSA";
-    private static final String SIGNATURE_ALGORITHM = "SHA1withRSA";
-
-    /**
-     * Verifies that the data was signed with the given signature, and returns
-     * the verified purchase. The data is in JSON format and signed
-     * with a private key. The data also contains the {@link PurchaseState}
-     * and product ID of the purchase.
-     * @param base64PublicKey the base64-encoded public key to use for verifying.
-     * @param signedData the signed JSON string (signed, not encrypted)
-     * @param signature the signature for the data, signed with the private key
-     */
-    public static boolean verifyPurchase(String base64PublicKey, String signedData, String signature) {
-        if (TextUtils.isEmpty(signedData) || TextUtils.isEmpty(base64PublicKey) ||
-                TextUtils.isEmpty(signature)) {
-            Log.e(TAG, "Purchase verification failed: missing data.");
-            return false;
-        }
-
-        PublicKey key = Security.generatePublicKey(base64PublicKey);
-        return Security.verify(key, signedData, signature);
-    }
-
-    /**
-     * Generates a PublicKey instance from a string containing the
-     * Base64-encoded public key.
-     *
-     * @param encodedPublicKey Base64-encoded public key
-     * @throws IllegalArgumentException if encodedPublicKey is invalid
-     */
-    public static PublicKey generatePublicKey(String encodedPublicKey) {
-        try {
-            byte[] decodedKey = Base64.decode(encodedPublicKey);
-            KeyFactory keyFactory = KeyFactory.getInstance(KEY_FACTORY_ALGORITHM);
-            return keyFactory.generatePublic(new X509EncodedKeySpec(decodedKey));
-        } catch (NoSuchAlgorithmException e) {
-            throw new RuntimeException(e);
-        } catch (InvalidKeySpecException e) {
-            Log.e(TAG, "Invalid key specification.");
-            throw new IllegalArgumentException(e);
-        } catch (Base64DecoderException e) {
-            Log.e(TAG, "Base64 decoding failed.");
-            throw new IllegalArgumentException(e);
-        }
-    }
-
-    /**
-     * Verifies that the signature from the server matches the computed
-     * signature on the data.  Returns true if the data is correctly signed.
-     *
-     * @param publicKey public key associated with the developer account
-     * @param signedData signed data from server
-     * @param signature server signature
-     * @return true if the data and signature match
-     */
-    public static boolean verify(PublicKey publicKey, String signedData, String signature) {
-        Signature sig;
-        try {
-            sig = Signature.getInstance(SIGNATURE_ALGORITHM);
-            sig.initVerify(publicKey);
-            sig.update(signedData.getBytes());
-            if (!sig.verify(Base64.decode(signature))) {
-                Log.e(TAG, "Signature verification failed.");
-                return false;
-            }
-            return true;
-        } catch (NoSuchAlgorithmException e) {
-            Log.e(TAG, "NoSuchAlgorithmException.");
-        } catch (InvalidKeyException e) {
-            Log.e(TAG, "Invalid key specification.");
-        } catch (SignatureException e) {
-            Log.e(TAG, "Signature exception.");
-        } catch (Base64DecoderException e) {
-            Log.e(TAG, "Base64 decoding failed.");
-        }
-        return false;
-    }
-}
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/SkuDetails.java
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/SkuDetails.java
@@ -1,58 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.v2ray.ang.util;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-/**
- * Represents an in-app product's listing details.
- */
-public class SkuDetails {
-    String mItemType;
-    String mSku;
-    String mType;
-    String mPrice;
-    String mTitle;
-    String mDescription;
-    String mJson;
-
-    public SkuDetails(String jsonSkuDetails) throws JSONException {
-        this(IabHelper.ITEM_TYPE_INAPP, jsonSkuDetails);
-    }
-
-    public SkuDetails(String itemType, String jsonSkuDetails) throws JSONException {
-        mItemType = itemType;
-        mJson = jsonSkuDetails;
-        JSONObject o = new JSONObject(mJson);
-        mSku = o.optString("productId");
-        mType = o.optString("type");
-        mPrice = o.optString("price");
-        mTitle = o.optString("title");
-        mDescription = o.optString("description");
-    }
-
-    public String getSku() { return mSku; }
-    public String getType() { return mType; }
-    public String getPrice() { return mPrice; }
-    public String getTitle() { return mTitle; }
-    public String getDescription() { return mDescription; }
-
-    @Override
-    public String toString() {
-        return "SkuDetails:" + mJson;
-    }
-}
--- a/V2rayNG/app/src/main/jniLibs/arm64-v8a/libtun2socks.so
+++ b/V2rayNG/app/src/main/jniLibs/arm64-v8a/libtun2socks.so
--- a/V2rayNG/app/src/main/jniLibs/armeabi-v7a/libtun2socks.so
+++ b/V2rayNG/app/src/main/jniLibs/armeabi-v7a/libtun2socks.so
--- a/V2rayNG/app/src/main/jniLibs/x86/libtun2socks.so
+++ b/V2rayNG/app/src/main/jniLibs/x86/libtun2socks.so
--- a/V2rayNG/app/src/main/jniLibs/x86_64/libtun2socks.so
+++ b/V2rayNG/app/src/main/jniLibs/x86_64/libtun2socks.so
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AngApplication.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AngApplication.kt
@@ -1,7 +1,7 @@
 package com.v2ray.ang

-import android.support.multidex.MultiDexApplication
-import android.support.v7.preference.PreferenceManager
+import androidx.multidex.MultiDexApplication
+import androidx.preference.PreferenceManager
 import com.tencent.mmkv.MMKV

 class AngApplication : MultiDexApplication() {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AppConfig.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AppConfig.kt
@@ -18,8 +18,11 @@ object AppConfig {
    const val PREF_SNIFFING_ENABLED = "pref_sniffing_enabled"
    const val PREF_PROXY_SHARING = "pref_proxy_sharing_enabled"
    const val PREF_LOCAL_DNS_ENABLED = "pref_local_dns_enabled"
+    const val PREF_FAKE_DNS_ENABLED = "pref_fake_dns_enabled"
+    const val PREF_VPN_DNS = "pref_vpn_dns"
    const val PREF_REMOTE_DNS = "pref_remote_dns"
    const val PREF_DOMESTIC_DNS = "pref_domestic_dns"
+    const val PREF_LOCAL_DNS_PORT = "pref_local_dns_port"
    const val PREF_FORWARD_IPV6 = "pref_forward_ipv6"
    const val PREF_ROUTING_DOMAIN_STRATEGY = "pref_routing_domain_strategy"
    const val PREF_ROUTING_MODE = "pref_routing_mode"
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/ServerConfig.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/ServerConfig.kt
@@ -21,7 +21,7 @@ data class ServerConfig(
                    return ServerConfig(
                            configType = configType,
                            outboundBean = V2rayConfig.OutboundBean(
-                                    protocol = configType.name.toLowerCase(),
+                                    protocol = configType.name.lowercase(),
                                    settings = V2rayConfig.OutboundBean.OutSettingsBean(
                                            vnext = listOf(V2rayConfig.OutboundBean.OutSettingsBean.VnextBean(
                                                    users = listOf(V2rayConfig.OutboundBean.OutSettingsBean.VnextBean.UsersBean())))),
@@ -32,7 +32,7 @@ data class ServerConfig(
                    return ServerConfig(
                            configType = configType,
                            outboundBean = V2rayConfig.OutboundBean(
-                                    protocol = configType.name.toLowerCase(),
+                                    protocol = configType.name.lowercase(),
                                    settings = V2rayConfig.OutboundBean.OutSettingsBean(
                                            servers = listOf(V2rayConfig.OutboundBean.OutSettingsBean.ServersBean())),
                                    streamSettings = V2rayConfig.OutboundBean.StreamSettingsBean()))
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/V2rayConfig.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/V2rayConfig.kt
@@ -5,6 +5,7 @@ import com.google.gson.GsonBuilder
 import com.google.gson.JsonPrimitive
 import com.google.gson.JsonSerializationContext
 import com.google.gson.JsonSerializer
+import com.google.gson.annotations.SerializedName
 import com.google.gson.reflect.TypeToken
 import java.lang.reflect.Type

@@ -19,7 +20,8 @@ data class V2rayConfig(
        val api: Any? = null,
        val transport: Any? = null,
        val reverse: Any? = null,
-        val fakedns: Any? = null) {
+        var fakedns: Any? = null,
+        val browserForwarder: Any? = null) {
    companion object {
        const val DEFAULT_PORT = 443
        const val DEFAULT_SECURITY = "auto"
@@ -34,7 +36,8 @@ data class V2rayConfig(

    data class LogBean(val access: String,
                       val error: String,
-                       var loglevel: String?)
+                       var loglevel: String?,
+                       val dnsLog: Boolean? = null)

    data class InboundBean(
            var tag: String,
@@ -54,7 +57,7 @@ data class V2rayConfig(
                                  val network: String? = null)

        data class SniffingBean(var enabled: Boolean,
-                                val destOverride: List<String>,
+                                val destOverride: ArrayList<String>,
                                val metadataOnly: Boolean? = null)
    }

@@ -75,7 +78,7 @@ data class V2rayConfig(
                                   val address: String? = null,
                                   val port: Int? = null,
                /*Freedom*/
-                                   val domainStrategy: String? = null,
+                                   var domainStrategy: String? = null,
                                   val redirect: String? = null,
                                   val userLevel: Int? = null,
                /*Loopback*/
@@ -86,7 +89,6 @@ data class V2rayConfig(
                                 var users: List<UsersBean>) {

                data class UsersBean(var id: String = "",
-                                     var alterId: Int? = null,
                                     var security: String = DEFAULT_SECURITY,
                                     var level: Int = DEFAULT_LEVEL,
                                     var encryption: String = "",
@@ -101,6 +103,7 @@ data class V2rayConfig(
                                   var level: Int = DEFAULT_LEVEL,
                                   val email: String? = null,
                                   val flow: String? = null,
+                                   val ivCheck: Boolean? = null,
                                   var users: List<SocksUsersBean>? = null) {


@@ -121,18 +124,27 @@ data class V2rayConfig(
                                      var tlsSettings: TlsSettingsBean? = null,
                                      var quicSettings: QuicSettingBean? = null,
                                      var xtlsSettings: TlsSettingsBean? = null,
-                                      val grpcSettings: Any? = null,
+                                      var grpcSettings: GrpcSettingsBean? = null,
                                      val dsSettings: Any? = null,
                                      val sockopt: Any? = null
        ) {

-            data class TcpSettingsBean(var header: HeaderBean = HeaderBean()) {
+            data class TcpSettingsBean(var header: HeaderBean = HeaderBean(),
+                                       val acceptProxyProtocol: Boolean? = null) {
                data class HeaderBean(var type: String = "none",
                                      var request: RequestBean? = null,
                                      var response: Any? = null) {
                    data class RequestBean(var path: List<String> = ArrayList(),
-                                           var headers: HeadersBean = HeadersBean()) {
-                        data class HeadersBean(var Host: List<String> = ArrayList())
+                                           var headers: HeadersBean = HeadersBean(),
+                                           val version: String? = null,
+                                           val method: String? = null) {
+                        data class HeadersBean(var Host: List<String> = ArrayList(),
+                                               @SerializedName("User-Agent")
+                                               val userAgent: List<String>? = null,
+                                               @SerializedName("Accept-Encoding")
+                                               val acceptEncoding: List<String>? = null,
+                                               val Connection: List<String>? = null,
+                                               val Pragma: String? = null)
                    }
                }
            }
@@ -150,7 +162,10 @@ data class V2rayConfig(
            }

            data class WsSettingsBean(var path: String = "",
-                                      var headers: HeadersBean = HeadersBean()) {
+                                      var headers: HeadersBean = HeadersBean(),
+                                      val maxEarlyData: Int? = null,
+                                      val useBrowserForwarding: Boolean? = null,
+                                      val acceptProxyProtocol: Boolean? = null) {
                data class HeadersBean(var Host: String = "")
            }

@@ -160,8 +175,14 @@ data class V2rayConfig(
            data class TlsSettingsBean(var allowInsecure: Boolean = false,
                                       var serverName: String = "",
                                       val alpn: List<String>? = null,
+                                       val minVersion: String? = null,
+                                       val maxVersion: String? = null,
+                                       val preferServerCipherSuites: Boolean? = null,
+                                       val cipherSuites: String? = null,
+                                       val fingerprint: String? = null,
                                       val certificates: List<Any>? = null,
-                                       val disableSystemRoot: Boolean? = null)
+                                       val disableSystemRoot: Boolean? = null,
+                                       val enableSessionResumption: Boolean? = null)

            data class QuicSettingBean(var security: String = "none",
                                       var key: String = "",
@@ -169,8 +190,11 @@ data class V2rayConfig(
                data class HeaderBean(var type: String = "none")
            }

+            data class GrpcSettingsBean(var serviceName: String = "",
+                                        var multiMode: Boolean? = null)
+
            fun populateTransportSettings(transport: String, headerType: String?, host: String?, path: String?, seed: String?,
-                                          quicSecurity: String?, key: String?): String {
+                                          quicSecurity: String?, key: String?, mode: String?, serviceName: String?): String {
                var sni = ""
                network = transport
                when (network) {
@@ -180,8 +204,8 @@ data class V2rayConfig(
                            tcpSetting.header.type = HTTP
                            if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(path)) {
                                val requestObj = TcpSettingsBean.HeaderBean.RequestBean()
-                                requestObj.headers.Host = (host ?: "").split(",").map { it.trim() }
-                                requestObj.path = (path ?: "").split(",").map { it.trim() }
+                                requestObj.headers.Host = (host ?: "").split(",").map { it.trim() }.filter { it.isNotEmpty() }
+                                requestObj.path = (path ?: "").split(",").map { it.trim() }.filter { it.isNotEmpty() }
                                tcpSetting.header.request = requestObj
                                sni = requestObj.headers.Host.getOrNull(0) ?: sni
                            }
@@ -211,7 +235,7 @@ data class V2rayConfig(
                    "h2", "http" -> {
                        network = "h2"
                        val h2Setting = HttpSettingsBean()
-                        h2Setting.host = (host ?: "").split(",").map { it.trim() }
+                        h2Setting.host = (host ?: "").split(",").map { it.trim() }.filter { it.isNotEmpty() }
                        sni = h2Setting.host.getOrNull(0) ?: sni
                        h2Setting.path = path ?: "/"
                        httpSettings = h2Setting
@@ -223,6 +247,13 @@ data class V2rayConfig(
                        quicsetting.header.type = headerType ?: "none"
                        quicSettings = quicsetting
                    }
+                    "grpc" -> {
+                        val grpcSetting = GrpcSettingsBean()
+                        grpcSetting.multiMode = mode == "multi"
+                        grpcSetting.serviceName = serviceName ?: ""
+                        sni = host ?: ""
+                        grpcSettings = grpcSetting
+                    }
                }
                return sni
            }
@@ -324,6 +355,12 @@ data class V2rayConfig(
                                quicSetting.security,
                                quicSetting.key)
                    }
+                    "grpc" -> {
+                        val grpcSetting = streamSettings?.grpcSettings ?: return null
+                        listOf(if (grpcSetting.multiMode == true) "multi" else "gun",
+                                "",
+                                grpcSetting.serviceName)
+                    }
                    else -> null
                }
            }
@@ -331,16 +368,17 @@ data class V2rayConfig(
        }
    }

-    data class DnsBean(var servers: List<Any>? = null,
-                       var hosts: Map<String, String>? = null,
+    data class DnsBean(var servers: ArrayList<Any>? = null,
+                       var hosts: Map<String, Any>? = null,
                       val clientIp: String? = null,
                       val disableCache: Boolean? = null,
+                       val queryStrategy: String? = null,
                       val tag: String? = null
    ) {
        data class ServersBean(var address: String = "",
-                               var port: Int = 0,
-                               var domains: List<String>?,
-                               var expectIPs: List<String>?,
+                               var port: Int? = null,
+                               var domains: List<String>? = null,
+                               var expectIPs: List<String>? = null,
                               val clientIp: String? = null)
    }

@@ -378,6 +416,9 @@ data class V2rayConfig(
                var bufferSize: Int? = null)
    }

+    data class FakednsBean(var ipPool: String = "198.18.0.0/15",
+                           var poolSize: Int = 10000) // roughly 10 times smaller than total ip pool
+
    fun getProxyOutbound(): OutboundBean? {
        outbounds.forEach { outbound ->
            if (outbound.protocol.equals(EConfigType.VMESS.name, true) ||
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/VmessQRCode.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/VmessQRCode.kt
@@ -5,7 +5,7 @@ data class VmessQRCode(var v: String = "",
                       var add: String = "",
                       var port: String = "",
                       var id: String = "",
-                       var aid: String = "",
+                       var aid: String = "0",
                       var net: String = "",
                       var type: String = "",
                       var host: String = "",
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/extension/_Dialog.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/extension/_Dialog.kt
@@ -1,244 +0,0 @@
-package com.v2ray.ang.extension
-
-import android.app.Fragment
-import android.app.ProgressDialog
-import android.content.Context
-import android.content.DialogInterface
-import android.database.Cursor
-import android.graphics.drawable.Drawable
-import android.support.v7.app.AlertDialog
-import android.view.KeyEvent
-import android.view.View
-import android.widget.ListAdapter
-
-
-fun Context.alertView(
-        title: String? = null,
-        view: View,
-        init: (KAlertDialogBuilder.() -> Unit)? = null
-) = KAlertDialogBuilder(this).apply {
-    if (title != null) title(title)
-    if (title != null) customView(view)
-    if (init != null) init()
-}
-
-fun Fragment.alert(
-        message: String,
-        title: String? = null,
-        init: (KAlertDialogBuilder.() -> Unit)? = null
-) = activity.alert(message, title, init)
-
-fun Context.alert(
-        message: String,
-        title: String? = null,
-        init: (KAlertDialogBuilder.() -> Unit)? = null
-) = KAlertDialogBuilder(this).apply {
-    if (title != null) title(title)
-    message(message)
-    if (init != null) init()
-}
-
-fun Fragment.alert(
-        message: Int,
-        title: Int? = null,
-        init: (KAlertDialogBuilder.() -> Unit)? = null
-) = activity.alert(message, title, init)
-
-fun Context.alert(
-        message: Int,
-        title: Int? = null,
-        init: (KAlertDialogBuilder.() -> Unit)? = null
-) = KAlertDialogBuilder(this).apply {
-    if (title != null) title(title)
-    message(message)
-    if (init != null) init()
-}
-
-
-fun Fragment.alert(init: KAlertDialogBuilder.() -> Unit): KAlertDialogBuilder = activity.alert(init)
-
-fun Context.alert(init: KAlertDialogBuilder.() -> Unit) = KAlertDialogBuilder(this).apply { init() }
-
-fun Fragment.progressDialog(
-        message: Int? = null,
-        title: Int? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = activity.progressDialog(message, title, init)
-
-fun Context.progressDialog(
-        message: Int? = null,
-        title: Int? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = progressDialog(false, message?.let { getString(it) }, title?.let { getString(it) }, init)
-
-fun Fragment.indeterminateProgressDialog(
-        message: Int? = null,
-        title: Int? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = activity.progressDialog(message, title, init)
-
-fun Context.indeterminateProgressDialog(
-        message: Int? = null,
-        title: Int? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = progressDialog(true, message?.let { getString(it) }, title?.let { getString(it) }, init)
-
-fun Fragment.progressDialog(
-        message: String? = null,
-        title: String? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = activity.progressDialog(message, title, init)
-
-fun Context.progressDialog(
-        message: String? = null,
-        title: String? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = progressDialog(false, message, title, init)
-
-fun Fragment.indeterminateProgressDialog(
-        message: String? = null,
-        title: String? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = activity.indeterminateProgressDialog(message, title, init)
-
-fun Context.indeterminateProgressDialog(
-        message: String? = null,
-        title: String? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = progressDialog(true, message, title, init)
-
-private fun Context.progressDialog(
-        indeterminate: Boolean,
-        message: String? = null,
-        title: String? = null,
-        init: (ProgressDialog.() -> Unit)? = null
-) = ProgressDialog(this).apply {
-    isIndeterminate = indeterminate
-    if (!indeterminate) setProgressStyle(ProgressDialog.STYLE_HORIZONTAL)
-    if (message != null) setMessage(message)
-    if (title != null) setTitle(title)
-    if (init != null) init()
-    show()
-}
-
-fun Fragment.selector(
-        title: CharSequence? = null,
-        items: List<CharSequence>,
-        onClick: (Int) -> Unit
-): Unit = activity.selector(title, items, onClick)
-
-fun Context.selector(
-        title: CharSequence? = null,
-        items: List<CharSequence>,
-        onClick: (Int) -> Unit
-) {
-    with(KAlertDialogBuilder(this)) {
-        if (title != null) title(title)
-        items(items, onClick)
-        show()
-    }
-}
-
-class KAlertDialogBuilder(val ctx: Context) {
-
-    val builder: AlertDialog.Builder = AlertDialog.Builder(ctx)
-    protected var dialog: AlertDialog? = null
-
-    fun dismiss() {
-        dialog?.dismiss()
-    }
-
-    fun show(): KAlertDialogBuilder {
-        dialog = builder.create()
-        dialog!!.show()
-        return this
-    }
-
-    fun title(title: CharSequence) {
-        builder.setTitle(title)
-    }
-
-    fun title(resource: Int) {
-        builder.setTitle(resource)
-    }
-
-    fun message(title: CharSequence) {
-        builder.setMessage(title)
-    }
-
-    fun message(resource: Int) {
-        builder.setMessage(resource)
-    }
-
-    fun icon(icon: Int) {
-        builder.setIcon(icon)
-    }
-
-    fun icon(icon: Drawable) {
-        builder.setIcon(icon)
-    }
-
-    fun customTitle(title: View) {
-        builder.setCustomTitle(title)
-    }
-
-    fun customView(view: View) {
-        builder.setView(view)
-    }
-
-    fun cancellable(value: Boolean = true) {
-        builder.setCancelable(value)
-    }
-
-    fun onCancel(f: () -> Unit) {
-        builder.setOnCancelListener { f() }
-    }
-
-    fun onKey(f: (keyCode: Int, e: KeyEvent) -> Boolean) {
-        builder.setOnKeyListener({ dialog, keyCode, event -> f(keyCode, event) })
-    }
-
-    fun neutralButton(textResource: Int = android.R.string.ok, f: DialogInterface.() -> Unit = { dismiss() }) {
-        neutralButton(ctx.getString(textResource), f)
-    }
-
-    fun neutralButton(title: String, f: DialogInterface.() -> Unit = { dismiss() }) {
-        builder.setNeutralButton(title, { dialog, which -> dialog.f() })
-    }
-
-    fun positiveButton(textResource: Int = android.R.string.ok, f: DialogInterface.() -> Unit) {
-        positiveButton(ctx.getString(textResource), f)
-    }
-
-    fun positiveButton(title: String, f: DialogInterface.() -> Unit) {
-        builder.setPositiveButton(title, { dialog, which -> dialog.f() })
-    }
-
-    fun negativeButton(textResource: Int = android.R.string.cancel, f: DialogInterface.() -> Unit = { dismiss() }) {
-        negativeButton(ctx.getString(textResource), f)
-    }
-
-    fun negativeButton(title: String, f: DialogInterface.() -> Unit = { dismiss() }) {
-        builder.setNegativeButton(title, { dialog, which -> dialog.f() })
-    }
-
-    fun items(itemsId: Int, f: (which: Int) -> Unit) {
-        items(ctx.resources!!.getTextArray(itemsId), f)
-    }
-
-    fun items(items: List<CharSequence>, f: (which: Int) -> Unit) {
-        items(items.toTypedArray(), f)
-    }
-
-    fun items(items: Array<CharSequence>, f: (which: Int) -> Unit) {
-        builder.setItems(items, { dialog, which -> f(which) })
-    }
-
-    fun adapter(adapter: ListAdapter, f: (which: Int) -> Unit) {
-        builder.setAdapter(adapter, { dialog, which -> f(which) })
-    }
-
-    fun adapter(cursor: Cursor, labelColumn: String, f: (which: Int) -> Unit) {
-        builder.setCursor(cursor, { dialog, which -> f(which) }, labelColumn)
-    }
-}
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/extension/_Ext.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/extension/_Ext.kt
@@ -15,13 +15,13 @@ import java.net.URLConnection
 val Context.v2RayApplication: AngApplication
    get() = applicationContext as AngApplication

-inline fun Context.toast(message: Int): Toast = ToastCompat
+fun Context.toast(message: Int): Toast = ToastCompat
        .makeText(this, message, Toast.LENGTH_SHORT)
        .apply {
            show()
        }

-inline fun Context.toast(message: CharSequence): Toast = ToastCompat
+fun Context.toast(message: CharSequence): Toast = ToastCompat
        .makeText(this, message, Toast.LENGTH_SHORT)
        .apply {
            show()
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/receiver/WidgetProvider.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/receiver/WidgetProvider.kt
@@ -6,6 +6,7 @@ import android.appwidget.AppWidgetProvider
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
+import android.os.Build
 import android.widget.RemoteViews
 import com.v2ray.ang.R
 import com.v2ray.ang.AppConfig
@@ -21,16 +22,33 @@ class WidgetProvider : AppWidgetProvider() {
        updateWidgetBackground(context, appWidgetManager, appWidgetIds, V2RayServiceManager.v2rayPoint.isRunning)
    }

+
    private fun updateWidgetBackground(context: Context, appWidgetManager: AppWidgetManager, appWidgetIds: IntArray, isRunning: Boolean) {
        val remoteViews = RemoteViews(context.packageName, R.layout.widget_switch)
        val intent = Intent(context, WidgetProvider::class.java)
        intent.action = AppConfig.BROADCAST_ACTION_WIDGET_CLICK
-        val pendingIntent = PendingIntent.getBroadcast(context, R.id.layout_switch, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        val pendingIntent = PendingIntent.getBroadcast(
+            context,
+            R.id.layout_switch,
+            intent,
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+            } else {
+                PendingIntent.FLAG_UPDATE_CURRENT
+            })
        remoteViews.setOnClickPendingIntent(R.id.layout_switch, pendingIntent)
        if (isRunning) {
-            remoteViews.setInt(R.id.layout_switch, "setBackgroundResource", R.drawable.ic_rounded_corner_theme)
+            remoteViews.setInt(
+                R.id.layout_switch,
+                "setBackgroundResource",
+                R.drawable.ic_rounded_corner_theme
+            )
        } else {
-            remoteViews.setInt(R.id.layout_switch, "setBackgroundResource", R.drawable.ic_rounded_corner_grey)
+            remoteViews.setInt(
+                R.id.layout_switch,
+                "setBackgroundResource",
+                R.drawable.ic_rounded_corner_grey
+            )
        }

        for (appWidgetId in appWidgetIds) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayServiceManager.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayServiceManager.kt
@@ -10,11 +10,12 @@ import android.content.Intent
 import android.content.IntentFilter
 import android.graphics.Color
 import android.os.Build
-import android.support.annotation.RequiresApi
-import android.support.v4.app.NotificationCompat
+import androidx.annotation.RequiresApi
+import androidx.core.app.NotificationCompat
 import android.util.Log
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.AppConfig.ANG_PACKAGE
 import com.v2ray.ang.AppConfig.TAG_DIRECT
 import com.v2ray.ang.R
 import com.v2ray.ang.dto.ServerConfig
@@ -26,6 +27,9 @@ import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
 import com.v2ray.ang.util.V2rayConfigUtil
 import go.Seq
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import libv2ray.Libv2ray
 import libv2ray.V2RayPoint
 import libv2ray.V2RayVPNServiceSupportsSet
@@ -89,7 +93,7 @@ object V2RayServiceManager {
                serviceControl.stopService()
                0
            } catch (e: Exception) {
-                Log.d(serviceControl.getService().packageName, e.toString())
+                Log.d(ANG_PACKAGE, e.toString())
                -1
            }
        }
@@ -117,7 +121,7 @@ object V2RayServiceManager {
                startSpeedNotification()
                0
            } catch (e: Exception) {
-                Log.d(serviceControl.getService().packageName, e.toString())
+                Log.d(ANG_PACKAGE, e.toString())
                -1
            }
        }
@@ -140,7 +144,7 @@ object V2RayServiceManager {
                mFilter.addAction(Intent.ACTION_USER_PRESENT)
                service.registerReceiver(mMsgReceive, mFilter)
            } catch (e: Exception) {
-                Log.d(service.packageName, e.toString())
+                Log.d(ANG_PACKAGE, e.toString())
            }

            v2rayPoint.configureFileContent = result.content
@@ -153,7 +157,7 @@ object V2RayServiceManager {
            try {
                v2rayPoint.runLoop()
            } catch (e: Exception) {
-                Log.d(service.packageName, e.toString())
+                Log.d(ANG_PACKAGE, e.toString())
            }

            if (v2rayPoint.isRunning) {
@@ -170,10 +174,12 @@ object V2RayServiceManager {
        val service = serviceControl?.get()?.getService() ?: return

        if (v2rayPoint.isRunning) {
-            try {
-                v2rayPoint.stopLoop()
-            } catch (e: Exception) {
-                Log.d(service.packageName, e.toString())
+            GlobalScope.launch(Dispatchers.Default) {
+                try {
+                    v2rayPoint.stopLoop()
+                } catch (e: Exception) {
+                    Log.d(ANG_PACKAGE, e.toString())
+                }
            }
        }

@@ -183,7 +189,7 @@ object V2RayServiceManager {
        try {
            service.unregisterReceiver(mMsgReceive)
        } catch (e: Exception) {
-            Log.d(service.packageName, e.toString())
+            Log.d(ANG_PACKAGE, e.toString())
        }
    }

@@ -215,11 +221,11 @@ object V2RayServiceManager {

            when (intent?.action) {
                Intent.ACTION_SCREEN_OFF -> {
-                    Log.d(AppConfig.ANG_PACKAGE, "SCREEN_OFF, stop querying stats")
+                    Log.d(ANG_PACKAGE, "SCREEN_OFF, stop querying stats")
                    stopSpeedNotification()
                }
                Intent.ACTION_SCREEN_ON -> {
-                    Log.d(AppConfig.ANG_PACKAGE, "SCREEN_ON, start querying stats")
+                    Log.d(ANG_PACKAGE, "SCREEN_ON, start querying stats")
                    startSpeedNotification()
                }
            }
@@ -231,15 +237,23 @@ object V2RayServiceManager {
        val startMainIntent = Intent(service, MainActivity::class.java)
        val contentPendingIntent = PendingIntent.getActivity(service,
                NOTIFICATION_PENDING_INTENT_CONTENT, startMainIntent,
-                PendingIntent.FLAG_UPDATE_CURRENT)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+            } else {
+                PendingIntent.FLAG_UPDATE_CURRENT
+            })

        val stopV2RayIntent = Intent(AppConfig.BROADCAST_ACTION_SERVICE)
-        stopV2RayIntent.`package` = AppConfig.ANG_PACKAGE
+        stopV2RayIntent.`package` = ANG_PACKAGE
        stopV2RayIntent.putExtra("key", AppConfig.MSG_STATE_STOP)

        val stopV2RayPendingIntent = PendingIntent.getBroadcast(service,
                NOTIFICATION_PENDING_INTENT_STOP_V2RAY, stopV2RayIntent,
-                PendingIntent.FLAG_UPDATE_CURRENT)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+            } else {
+                PendingIntent.FLAG_UPDATE_CURRENT
+            })

        val channelId =
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayVpnService.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayVpnService.kt
@@ -8,7 +8,7 @@ import android.net.*
 import android.os.Build
 import android.os.ParcelFileDescriptor
 import android.os.StrictMode
-import android.support.annotation.RequiresApi
+import androidx.annotation.RequiresApi
 import android.util.Log
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
@@ -122,16 +122,17 @@ class V2RayVpnService : VpnService(), ServiceControl {
                }

        if(!enableLocalDns) {
-            Utils.getRemoteDnsServers()
-                .forEach {
-                    builder.addDnsServer(it)
-                }
+            Utils.getVpnDnsServers()
+                    .forEach {
+                        if (Utils.isPureIpAddress(it)) {
+                            builder.addDnsServer(it)
+                        }
+                    }
        }

        builder.setSession(V2RayServiceManager.currentConfig?.remarks.orEmpty())

-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP &&
-                settingsStorage?.decodeBool(AppConfig.PREF_PER_APP_PROXY) == true) {
+        if (settingsStorage?.decodeBool(AppConfig.PREF_PER_APP_PROXY) == true) {
            val apps = settingsStorage?.decodeStringSet(AppConfig.PREF_PER_APP_PROXY_SET)
            val bypassApps = settingsStorage?.decodeBool(AppConfig.PREF_BYPASS_APPS) ?: false
            apps?.forEach {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/BaseActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/BaseActivity.kt
@@ -1,6 +1,6 @@
 package com.v2ray.ang.ui

-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.view.MenuItem

 abstract class BaseActivity : AppCompatActivity() {
@@ -11,4 +11,4 @@ abstract class BaseActivity : AppCompatActivity() {
        }
        else -> super.onOptionsItemSelected(item)
    }
-}
+}
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/FragmentAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/FragmentAdapter.kt
@@ -1,21 +1,17 @@
 package com.v2ray.ang.ui

+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentActivity
+import androidx.viewpager2.adapter.FragmentStateAdapter

-import android.support.v4.app.Fragment
-import android.support.v4.app.FragmentManager
-import android.support.v4.app.FragmentStatePagerAdapter
+class FragmentAdapter(fragmentActivity: FragmentActivity, private val mFragments: List<Fragment>) :
+        FragmentStateAdapter(fragmentActivity) {

-class FragmentAdapter(fm: FragmentManager, private val mFragments: List<Fragment>, private val mTitles: List<String>) : FragmentStatePagerAdapter(fm) {
-
-    override fun getItem(position: Int): Fragment {
+    override fun createFragment(position: Int): Fragment {
        return mFragments[position]
    }

-    override fun getCount(): Int {
+    override fun getItemCount(): Int {
        return mFragments.size
    }
-
-    override fun getPageTitle(position: Int): CharSequence? {
-        return mTitles[position]
-    }
-}
+}
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/LogcatActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/LogcatActivity.kt
@@ -7,10 +7,11 @@ import android.text.method.ScrollingMovementMethod
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
+import com.v2ray.ang.AppConfig.ANG_PACKAGE
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityLogcatBinding
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_logcat.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@@ -18,10 +19,13 @@ import java.io.IOException
 import java.util.LinkedHashSet

 class LogcatActivity : BaseActivity() {
+    private lateinit var binding: ActivityLogcatBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_logcat)
+        binding = ActivityLogcatBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)

        title = getString(R.string.title_logcat)

@@ -32,7 +36,7 @@ class LogcatActivity : BaseActivity() {
    private fun logcat(shouldFlushLog: Boolean) {

        try {
-            pb_waiting.visibility = View.VISIBLE
+            binding.pbWaiting.visibility = View.VISIBLE

            GlobalScope.launch(Dispatchers.Default) {
                if (shouldFlushLog) {
@@ -48,17 +52,17 @@ class LogcatActivity : BaseActivity() {
                lst.add("-v")
                lst.add("time")
                lst.add("-s")
-                lst.add("GoLog,tun2socks,com.v2ray.ang")
+                lst.add("GoLog,tun2socks,${ANG_PACKAGE},AndroidRuntime,System.err")
                val process = Runtime.getRuntime().exec(lst.toTypedArray())
 //                val bufferedReader = BufferedReader(
 //                        InputStreamReader(process.inputStream))
 //                val allText = bufferedReader.use(BufferedReader::readText)
                val allText = process.inputStream.bufferedReader().use { it.readText() }
                launch(Dispatchers.Main) {
-                    tv_logcat.text = allText
-                    tv_logcat.movementMethod = ScrollingMovementMethod()
-                    pb_waiting.visibility = View.GONE
-                    Handler(Looper.getMainLooper()).post { sv_logcat.fullScroll(View.FOCUS_DOWN) }
+                    binding.tvLogcat.text = allText
+                    binding.tvLogcat.movementMethod = ScrollingMovementMethod()
+                    binding.pbWaiting.visibility = View.GONE
+                    Handler(Looper.getMainLooper()).post { binding.svLogcat.fullScroll(View.FOCUS_DOWN) }
                }
            }
        } catch (e: IOException) {
@@ -66,14 +70,14 @@ class LogcatActivity : BaseActivity() {
        }
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.menu_logcat, menu)
        return super.onCreateOptionsMenu(menu)
    }

    override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
        R.id.copy_all -> {
-            Utils.setClipboard(this, tv_logcat.text.toString())
+            Utils.setClipboard(this, binding.tvLogcat.text.toString())
            toast(R.string.toast_success)
            true
        }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
@@ -1,26 +1,30 @@
 package com.v2ray.ang.ui

 import android.Manifest
-import android.arch.lifecycle.ViewModelProviders
 import android.content.Intent
 import android.net.Uri
 import android.net.VpnService
 import android.os.Bundle
-import android.support.design.widget.NavigationView
-import android.support.v4.view.GravityCompat
-import android.support.v7.app.ActionBarDrawerToggle
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.helper.ItemTouchHelper
+import com.google.android.material.navigation.NavigationView
+import androidx.core.view.GravityCompat
+import androidx.appcompat.app.ActionBarDrawerToggle
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.ItemTouchHelper
 import android.text.TextUtils
 import android.util.Log
 import android.view.KeyEvent
 import android.view.Menu
 import android.view.MenuItem
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.activity.viewModels
 import com.tbruyelle.rxpermissions.RxPermissions
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.AppConfig.ANG_PACKAGE
 import com.v2ray.ang.BuildConfig
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityMainBinding
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.helper.SimpleItemTouchHelperCallback
@@ -28,39 +32,39 @@ import com.v2ray.ang.service.V2RayServiceManager
 import com.v2ray.ang.util.AngConfigManager
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import com.v2ray.ang.util.V2rayConfigUtil
 import com.v2ray.ang.viewmodel.MainViewModel
-import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import libv2ray.Libv2ray
+import me.drakeet.support.toast.ToastCompat
 import rx.Observable
 import rx.android.schedulers.AndroidSchedulers
-import java.net.URL
 import java.util.concurrent.TimeUnit

 class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedListener {
-    companion object {
-        private const val REQUEST_CODE_VPN_PREPARE = 0
-        private const val REQUEST_SCAN = 1
-        private const val REQUEST_FILE_CHOOSER = 2
-        private const val REQUEST_SCAN_URL = 3
-    }
+    private lateinit var binding: ActivityMainBinding

    private val adapter by lazy { MainRecyclerAdapter(this) }
    private val mainStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_MAIN, MMKV.MULTI_PROCESS_MODE) }
    private val settingsStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SETTING, MMKV.MULTI_PROCESS_MODE) }
+    private val requestVpnPermission = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == RESULT_OK) {
+            startV2Ray()
+        }
+    }
    private var mItemTouchHelper: ItemTouchHelper? = null
-    val mainViewModel: MainViewModel by lazy { ViewModelProviders.of(this).get(MainViewModel::class.java) }
+    val mainViewModel: MainViewModel by viewModels()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
        title = getString(R.string.title_server)
-        setSupportActionBar(toolbar)
+        setSupportActionBar(binding.toolbar)

-        fab.setOnClickListener {
+        binding.fab.setOnClickListener {
            if (mainViewModel.isRunning.value == true) {
                Utils.stopVService(this)
            } else if (settingsStorage?.decodeString(AppConfig.PREF_MODE) ?: "VPN" == "VPN") {
@@ -68,65 +72,65 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                if (intent == null) {
                    startV2Ray()
                } else {
-                    startActivityForResult(intent, REQUEST_CODE_VPN_PREPARE)
+                    requestVpnPermission.launch(intent)
                }
            } else {
                startV2Ray()
            }
        }
-        layout_test.setOnClickListener {
+        binding.layoutTest.setOnClickListener {
            if (mainViewModel.isRunning.value == true) {
-                tv_test_state.text = getString(R.string.connection_test_testing)
+                binding.tvTestState.text = getString(R.string.connection_test_testing)
                mainViewModel.testCurrentServerRealPing()
            } else {
 //                tv_test_state.text = getString(R.string.connection_test_fail)
            }
        }

-        recycler_view.setHasFixedSize(true)
-        recycler_view.layoutManager = LinearLayoutManager(this)
-        recycler_view.adapter = adapter
+        binding.recyclerView.setHasFixedSize(true)
+        binding.recyclerView.layoutManager = LinearLayoutManager(this)
+        binding.recyclerView.adapter = adapter

        val callback = SimpleItemTouchHelperCallback(adapter)
        mItemTouchHelper = ItemTouchHelper(callback)
-        mItemTouchHelper?.attachToRecyclerView(recycler_view)
+        mItemTouchHelper?.attachToRecyclerView(binding.recyclerView)


        val toggle = ActionBarDrawerToggle(
-                this, drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
-        drawer_layout.addDrawerListener(toggle)
+                this, binding.drawerLayout, binding.toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
+        binding.drawerLayout.addDrawerListener(toggle)
        toggle.syncState()
-        nav_view.setNavigationItemSelectedListener(this)
-        version.text = "v${BuildConfig.VERSION_NAME} (${Libv2ray.checkVersionX()})"
+        binding.navView.setNavigationItemSelectedListener(this)
+        binding.version.text = "v${BuildConfig.VERSION_NAME} (${Libv2ray.checkVersionX()})"

        setupViewModelObserver()
        migrateLegacy()
    }

    private fun setupViewModelObserver() {
-        mainViewModel.updateListAction.observe(this, {
+        mainViewModel.updateListAction.observe(this) {
            val index = it ?: return@observe
            if (index >= 0) {
                adapter.notifyItemChanged(index)
            } else {
                adapter.notifyDataSetChanged()
            }
-        })
-        mainViewModel.updateTestResultAction.observe(this, { tv_test_state.text = it })
-        mainViewModel.isRunning.observe(this, {
+        }
+        mainViewModel.updateTestResultAction.observe(this) { binding.tvTestState.text = it }
+        mainViewModel.isRunning.observe(this) {
            val isRunning = it ?: return@observe
            adapter.isRunning = isRunning
            if (isRunning) {
-                fab.setImageResource(R.drawable.ic_v)
-                tv_test_state.text = getString(R.string.connection_connected)
-                layout_test.isFocusable = true
+                binding.fab.setImageResource(R.drawable.ic_v)
+                binding.tvTestState.text = getString(R.string.connection_connected)
+                binding.layoutTest.isFocusable = true
            } else {
-                fab.setImageResource(R.drawable.ic_v_idle)
-                tv_test_state.text = getString(R.string.connection_not_connected)
-                layout_test.isFocusable = false
+                binding.fab.setImageResource(R.drawable.ic_v_idle)
+                binding.tvTestState.text = getString(R.string.connection_not_connected)
+                binding.layoutTest.isFocusable = false
            }
            hideCircle()
-        })
+        }
        mainViewModel.startListenBroadcast()
    }

@@ -165,38 +169,14 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
        super.onPause()
    }

-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        super.onActivityResult(requestCode, resultCode, data)
-        when (requestCode) {
-            REQUEST_CODE_VPN_PREPARE ->
-                if (resultCode == RESULT_OK) {
-                    startV2Ray()
-                }
-            REQUEST_SCAN ->
-                if (resultCode == RESULT_OK) {
-                    importBatchConfig(data?.getStringExtra("SCAN_RESULT"))
-                }
-            REQUEST_FILE_CHOOSER -> {
-                val uri = data?.data
-                if (resultCode == RESULT_OK && uri != null) {
-                    readContentFromUri(uri)
-                }
-            }
-            REQUEST_SCAN_URL ->
-                if (resultCode == RESULT_OK) {
-                    importConfigCustomUrl(data?.getStringExtra("SCAN_RESULT"))
-                }
-        }
-    }
-
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.menu_main, menu)
        return true
    }

    override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
        R.id.import_qrcode -> {
-            importQRcode(REQUEST_SCAN)
+            importQRcode(true)
            true
        }
        R.id.import_clipboard -> {
@@ -231,7 +211,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
            true
        }
        R.id.import_config_custom_url_scan -> {
-            importQRcode(REQUEST_SCAN_URL)
+            importQRcode(false)
            true
        }

@@ -274,7 +254,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
    /**
     * import config from qrcode
     */
-    fun importQRcode(requestCode: Int): Boolean {
+    fun importQRcode(forConfig: Boolean): Boolean {
 //        try {
 //            startActivityForResult(Intent("com.google.zxing.client.android.SCAN")
 //                    .addCategory(Intent.CATEGORY_DEFAULT)
@@ -284,7 +264,10 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                .request(Manifest.permission.CAMERA)
                .subscribe {
                    if (it)
-                        startActivityForResult(Intent(this, ScannerActivity::class.java), requestCode)
+                        if (forConfig)
+                            scanQRCodeForConfig.launch(Intent(this, ScannerActivity::class.java))
+                        else
+                            scanQRCodeForUrlToCustomConfig.launch(Intent(this, ScannerActivity::class.java))
                    else
                        toast(R.string.toast_permission_denied)
                }
@@ -292,6 +275,18 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
        return true
    }

+    private val scanQRCodeForConfig = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == RESULT_OK) {
+            importBatchConfig(it.data?.getStringExtra("SCAN_RESULT"))
+        }
+    }
+
+    private val scanQRCodeForUrlToCustomConfig = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == RESULT_OK) {
+            importConfigCustomUrl(it.data?.getStringExtra("SCAN_RESULT"))
+        }
+    }
+
    /**
     * import config from clipboard
     */
@@ -375,7 +370,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
            }
            GlobalScope.launch(Dispatchers.IO) {
                val configText = try {
-                    URL(url).readText()
+                    Utils.getUrlContentWithCustomUserAgent(url)
                } catch (e: Exception) {
                    e.printStackTrace()
                    ""
@@ -409,13 +404,16 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                if (!Utils.isValidUrl(url)) {
                    return@forEach
                }
-                Log.d("Main", url)
+                Log.d(ANG_PACKAGE, url)
                GlobalScope.launch(Dispatchers.IO) {
                    val configText = try {
-                        URL(url).readText()
+                        Utils.getUrlContentWithCustomUserAgent(url)
                    } catch (e: Exception) {
                        e.printStackTrace()
-                        ""
+                        launch(Dispatchers.Main) {
+                            toast("\"" + it.second.remarks + "\" " + getString(R.string.toast_failure))
+                        }
+                        return@launch
                    }
                    launch(Dispatchers.Main) {
                        importBatchConfig(Utils.decode(configText), it.first)
@@ -438,14 +436,19 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
        intent.addCategory(Intent.CATEGORY_OPENABLE)

        try {
-            startActivityForResult(
-                    Intent.createChooser(intent, getString(R.string.title_file_chooser)),
-                    REQUEST_FILE_CHOOSER)
+            chooseFileForCustomConfig.launch(Intent.createChooser(intent, getString(R.string.title_file_chooser)))
        } catch (ex: android.content.ActivityNotFoundException) {
            toast(R.string.toast_require_file_manager)
        }
    }

+    private val chooseFileForCustomConfig = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        val uri = it.data?.data
+        if (it.resultCode == RESULT_OK && uri != null) {
+            readContentFromUri(uri)
+        }
+    }
+
    /**
     * read content from uri
     */
@@ -475,14 +478,11 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                toast(R.string.toast_none_data)
                return
            }
-            if (!V2rayConfigUtil.isValidConfig(server)) {
-                toast(R.string.toast_config_file_invalid)
-                return
-            }
            mainViewModel.appendCustomConfigServer(server)
            toast(R.string.toast_success)
            adapter.notifyItemInserted(mainViewModel.serverList.lastIndex)
        } catch (e: Exception) {
+            ToastCompat.makeText(this, "${getString(R.string.toast_malformed_josn)} ${e.cause?.message}", Toast.LENGTH_LONG).show()
            e.printStackTrace()
            return
        }
@@ -506,7 +506,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
    }

    fun showCircle() {
-        fabProgressCircle?.show()
+        binding.fabProgressCircle.show()
    }

    fun hideCircle() {
@@ -514,8 +514,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
            Observable.timer(300, TimeUnit.MILLISECONDS)
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe {
-                        if (fabProgressCircle.isShown) {
-                            fabProgressCircle.hide()
+                        if (binding.fabProgressCircle.isShown) {
+                            binding.fabProgressCircle.hide()
                        }
                    }
        } catch (e: Exception) {
@@ -523,8 +523,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
    }

    override fun onBackPressed() {
-        if (drawer_layout.isDrawerOpen(GravityCompat.START)) {
-            drawer_layout.closeDrawer(GravityCompat.START)
+        if (binding.drawerLayout.isDrawerOpen(GravityCompat.START)) {
+            binding.drawerLayout.closeDrawer(GravityCompat.START)
        } else {
            super.onBackPressed()
        }
@@ -554,7 +554,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                startActivity(Intent(this, LogcatActivity::class.java))
            }
        }
-        drawer_layout.closeDrawer(GravityCompat.START)
+        binding.drawerLayout.closeDrawer(GravityCompat.START)
        return true
    }
 }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
@@ -2,9 +2,9 @@ package com.v2ray.ang.ui

 import android.content.Intent
 import android.graphics.Color
-import android.support.v4.content.ContextCompat
-import android.support.v7.app.AlertDialog
-import android.support.v7.widget.RecyclerView
+import androidx.core.content.ContextCompat
+import androidx.appcompat.app.AlertDialog
+import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -12,6 +12,9 @@ import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ItemQrcodeBinding
+import com.v2ray.ang.databinding.ItemRecyclerFooterBinding
+import com.v2ray.ang.databinding.ItemRecyclerMainBinding
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.dto.SubscriptionItem
 import com.v2ray.ang.extension.toast
@@ -21,8 +24,6 @@ import com.v2ray.ang.service.V2RayServiceManager
 import com.v2ray.ang.util.AngConfigManager
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.item_qrcode.view.*
-import kotlinx.android.synthetic.main.item_recycler_main.view.*
 import rx.Observable
 import rx.android.schedulers.AndroidSchedulers
 import java.util.concurrent.TimeUnit
@@ -47,38 +48,42 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
    override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
        if (holder is MainViewHolder) {
            val guid = mActivity.mainViewModel.serverList.getOrNull(position) ?: return
-            val config = MmkvManager.decodeServerConfig(guid) ?: return
+            val config = mActivity.mainViewModel.serversCache.getOrElse(guid) { MmkvManager.decodeServerConfig(guid) } ?: return
            val outbound = config.getProxyOutbound()
            val aff = MmkvManager.decodeServerAffiliationInfo(guid)

-            holder.name.text = config.remarks
-            holder.radio.isChecked = guid == mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
+            holder.itemMainBinding.tvName.text = config.remarks
+            holder.itemMainBinding.btnRadio.isChecked = guid == mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
            holder.itemView.setBackgroundColor(Color.TRANSPARENT)
-            holder.test_result.text = aff?.getTestDelayString() ?: ""
+            holder.itemMainBinding.tvTestResult.text = aff?.getTestDelayString() ?: ""
            if (aff?.testDelayMillis?:0L < 0L) {
-                holder.test_result.setTextColor(ContextCompat.getColor(mActivity, android.R.color.holo_red_dark))
+                holder.itemMainBinding.tvTestResult.setTextColor(ContextCompat.getColor(mActivity, android.R.color.holo_red_dark))
            } else {
-                holder.test_result.setTextColor(ContextCompat.getColor(mActivity, R.color.colorPing))
+                holder.itemMainBinding.tvTestResult.setTextColor(ContextCompat.getColor(mActivity, R.color.colorPing))
            }
-            holder.subscription.text = ""
+            holder.itemMainBinding.tvSubscription.text = ""
            val json = subStorage?.decodeString(config.subscriptionId)
            if (!json.isNullOrBlank()) {
                val sub = Gson().fromJson(json, SubscriptionItem::class.java)
-                holder.subscription.text = sub.remarks
+                holder.itemMainBinding.tvSubscription.text = sub.remarks
            }

            var shareOptions = share_method.asList()
-            if (config.configType == EConfigType.CUSTOM) {
-                holder.type.text = mActivity.getString(R.string.server_customize_config)
-                shareOptions = shareOptions.takeLast(1)
-            } else if (config.configType == EConfigType.VLESS) {
-                holder.type.text = config.configType.name
-            } else {
-                holder.type.text = config.configType.name.toLowerCase()
+            when (config.configType) {
+                EConfigType.CUSTOM -> {
+                    holder.itemMainBinding.tvType.text = mActivity.getString(R.string.server_customize_config)
+                    shareOptions = shareOptions.takeLast(1)
+                }
+                EConfigType.VLESS -> {
+                    holder.itemMainBinding.tvType.text = config.configType.name
+                }
+                else -> {
+                    holder.itemMainBinding.tvType.text = config.configType.name.lowercase()
+                }
            }
-            holder.statistics.text = "${outbound?.getServerAddress()} : ${outbound?.getServerPort()}"
+            holder.itemMainBinding.tvStatistics.text = "${outbound?.getServerAddress()} : ${outbound?.getServerPort()}"

-            holder.layout_share.setOnClickListener {
+            holder.itemMainBinding.layoutShare.setOnClickListener {
                AlertDialog.Builder(mActivity).setItems(shareOptions.toTypedArray()) { _, i ->
                    try {
                        when (i) {
@@ -86,9 +91,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                                if (config.configType == EConfigType.CUSTOM) {
                                    shareFullContent(guid)
                                } else {
-                                    val iv = LayoutInflater.from(mActivity).inflate(R.layout.item_qrcode, null)
-                                    iv.iv_qcode.setImageBitmap(AngConfigManager.share2QRCode(guid))
-                                    AlertDialog.Builder(mActivity).setView(iv).show()
+                                    val ivBinding = ItemQrcodeBinding.inflate(LayoutInflater.from(mActivity))
+                                    ivBinding.ivQcode.setImageBitmap(AngConfigManager.share2QRCode(guid))
+                                    AlertDialog.Builder(mActivity).setView(ivBinding.root).show()
                                }
                            }
                            1 -> {
@@ -107,7 +112,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                }.show()
            }

-            holder.layout_edit.setOnClickListener {
+            holder.itemMainBinding.layoutEdit.setOnClickListener {
                val intent = Intent().putExtra("guid", guid)
                        .putExtra("isRunning", isRunning)
                if (config.configType == EConfigType.CUSTOM) {
@@ -116,7 +121,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                    mActivity.startActivity(intent.setClass(mActivity, ServerActivity::class.java))
                }
            }
-            holder.layout_remove.setOnClickListener {
+            holder.itemMainBinding.layoutRemove.setOnClickListener {
                if (guid != mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)) {
                    mActivity.mainViewModel.removeServer(guid)
                    notifyItemRemoved(position)
@@ -124,7 +129,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                }
            }

-            holder.infoContainer.setOnClickListener {
+            holder.itemMainBinding.infoContainer.setOnClickListener {
                val selected = mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
                if (guid != selected) {
                    mainStorage?.encode(MmkvManager.KEY_SELECTED_SERVER, guid)
@@ -146,9 +151,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
        if (holder is FooterViewHolder) {
            //if (activity?.defaultDPreference?.getPrefBoolean(AppConfig.PREF_INAPP_BUY_IS_PREMIUM, false)) {
            if (true) {
-                holder.layout_edit.visibility = View.INVISIBLE
+                holder.itemFooterBinding.layoutEdit.visibility = View.INVISIBLE
            } else {
-                holder.layout_edit.setOnClickListener {
+                holder.itemFooterBinding.layoutEdit.setOnClickListener {
                    Utils.openUri(mActivity, "${Utils.decode(AppConfig.promotionUrl)}?t=${System.currentTimeMillis()}")
                }
            }
@@ -166,11 +171,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder {
        return when (viewType) {
            VIEW_TYPE_ITEM ->
-                MainViewHolder(LayoutInflater.from(parent.context)
-                        .inflate(R.layout.item_recycler_main, parent, false))
+                MainViewHolder(ItemRecyclerMainBinding.inflate(LayoutInflater.from(parent.context), parent, false))
            else ->
-                FooterViewHolder(LayoutInflater.from(parent.context)
-                        .inflate(R.layout.item_recycler_footer, parent, false))
+                FooterViewHolder(ItemRecyclerFooterBinding.inflate(LayoutInflater.from(parent.context), parent, false))
        }
    }

@@ -182,40 +185,21 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
        }
    }

-    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
-
-    class MainViewHolder(itemView: View) : BaseViewHolder(itemView), ItemTouchHelperViewHolder {
-        val subscription = itemView.tv_subscription!!
-        val radio = itemView.btn_radio!!
-        val name = itemView.tv_name!!
-        val test_result = itemView.tv_test_result!!
-        val type = itemView.tv_type!!
-        val statistics = itemView.tv_statistics!!
-        val infoContainer = itemView.info_container!!
-        val layout_edit = itemView.layout_edit!!
-        val layout_share = itemView.layout_share
-        val layout_remove = itemView.layout_remove!!
-
-        override fun onItemSelected() {
+    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        fun onItemSelected() {
            itemView.setBackgroundColor(Color.LTGRAY)
        }

-        override fun onItemClear() {
+        fun onItemClear() {
            itemView.setBackgroundColor(0)
        }
    }

-    class FooterViewHolder(itemView: View) : BaseViewHolder(itemView), ItemTouchHelperViewHolder {
-        val layout_edit = itemView.layout_edit!!
+    class MainViewHolder(val itemMainBinding: ItemRecyclerMainBinding) :
+            BaseViewHolder(itemMainBinding.root), ItemTouchHelperViewHolder

-        override fun onItemSelected() {
-            itemView.setBackgroundColor(Color.LTGRAY)
-        }
-
-        override fun onItemClear() {
-            itemView.setBackgroundColor(0)
-        }
-    }
+    class FooterViewHolder(val itemFooterBinding: ItemRecyclerFooterBinding) :
+            BaseViewHolder(itemFooterBinding.root), ItemTouchHelperViewHolder

    override fun onItemDismiss(position: Int) {
        val guid = mActivity.mainViewModel.serverList.getOrNull(position) ?: return
@@ -233,7 +217,11 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
    override fun onItemMove(fromPosition: Int, toPosition: Int): Boolean {
        mActivity.mainViewModel.swapServer(fromPosition, toPosition)
        notifyItemMoved(fromPosition, toPosition)
-        //notifyItemRangeChanged(fromPosition, toPosition - fromPosition + 1)
+        // position is changed, since position is used by click callbacks, need to update range
+        if (toPosition > fromPosition)
+            notifyItemRangeChanged(fromPosition, toPosition - fromPosition + 1)
+        else
+            notifyItemRangeChanged(toPosition, fromPosition - toPosition + 1)
        return true
    }

--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
@@ -4,10 +4,10 @@ import android.animation.Animator
 import android.animation.AnimatorListenerAdapter
 import android.content.Context
 import android.os.Bundle
-import android.support.v7.preference.PreferenceManager
-import android.support.v7.widget.DividerItemDecoration
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.RecyclerView
+import androidx.preference.PreferenceManager
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import android.text.TextUtils
 import android.util.Log
 import android.view.Menu
@@ -17,7 +17,6 @@ import android.view.animation.AccelerateInterpolator
 import android.view.animation.DecelerateInterpolator
 import com.v2ray.ang.R
 import com.v2ray.ang.util.AppManagerUtil
-import kotlinx.android.synthetic.main.activity_bypass_list.*
 import rx.android.schedulers.AndroidSchedulers
 import rx.schedulers.Schedulers
 import java.text.Collator
@@ -25,6 +24,8 @@ import java.util.*
 import android.view.inputmethod.EditorInfo
 import android.view.inputmethod.InputMethodManager
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.AppConfig.ANG_PACKAGE
+import com.v2ray.ang.databinding.ActivityBypassListBinding
 import com.v2ray.ang.dto.AppInfo
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.extension.v2RayApplication
@@ -35,6 +36,7 @@ import kotlinx.coroutines.launch
 import java.net.URL

 class PerAppProxyActivity : BaseActivity() {
+    private lateinit var binding: ActivityBypassListBinding

    private var adapter: PerAppProxyAdapter? = null
    private var appsAll: List<AppInfo>? = null
@@ -42,12 +44,14 @@ class PerAppProxyActivity : BaseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_bypass_list)
+        binding = ActivityBypassListBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)

        supportActionBar?.setDisplayHomeAsUpEnabled(true)

        val dividerItemDecoration = DividerItemDecoration(this, LinearLayoutManager.VERTICAL)
-        recycler_view.addItemDecoration(dividerItemDecoration)
+        binding.recyclerView.addItemDecoration(dividerItemDecoration)

        val blacklist = defaultSharedPreferences.getStringSet(AppConfig.PREF_PER_APP_PROXY_SET, null)

@@ -62,8 +66,8 @@ class PerAppProxyActivity : BaseActivity() {
                                one.isSelected = 0
                            }
                        }
-                        val comparator = object : Comparator<AppInfo> {
-                            override fun compare(p1: AppInfo, p2: AppInfo): Int = when {
+                        val comparator = Comparator<AppInfo> { p1, p2 ->
+                            when {
                                p1.isSelected > p2.isSelected -> -1
                                p1.isSelected == p2.isSelected -> 0
                                else -> 1
@@ -89,20 +93,20 @@ class PerAppProxyActivity : BaseActivity() {
                .subscribe {
                    appsAll = it
                    adapter = PerAppProxyAdapter(this, it, blacklist)
-                    recycler_view.adapter = adapter
-                    pb_waiting.visibility = View.GONE
+                    binding.recyclerView.adapter = adapter
+                    binding.pbWaiting.visibility = View.GONE
                }

-        recycler_view.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+        binding.recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
            var dst = 0
            val threshold = resources.getDimensionPixelSize(R.dimen.bypass_list_header_height) * 3
            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                dst += dy
                if (dst > threshold) {
-                    header_view.hide()
+                    binding.headerView.hide()
                    dst = 0
                } else if (dst < -20) {
-                    header_view.show()
+                    binding.headerView.show()
                    dst = 0
                }
            }
@@ -138,23 +142,23 @@ class PerAppProxyActivity : BaseActivity() {
            }
        })

-        switch_per_app_proxy.setOnCheckedChangeListener { _, isChecked ->
+        binding.switchPerAppProxy.setOnCheckedChangeListener { _, isChecked ->
            defaultSharedPreferences.edit().putBoolean(AppConfig.PREF_PER_APP_PROXY, isChecked).apply()
        }
-        switch_per_app_proxy.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_PER_APP_PROXY, false)
+        binding.switchPerAppProxy.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_PER_APP_PROXY, false)

-        switch_bypass_apps.setOnCheckedChangeListener { _, isChecked ->
+        binding.switchBypassApps.setOnCheckedChangeListener { _, isChecked ->
            defaultSharedPreferences.edit().putBoolean(AppConfig.PREF_BYPASS_APPS, isChecked).apply()
        }
-        switch_bypass_apps.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_BYPASS_APPS, false)
+        binding.switchBypassApps.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_BYPASS_APPS, false)

-        et_search.setOnEditorActionListener { v, actionId, event ->
+        binding.etSearch.setOnEditorActionListener { v, actionId, _ ->
            if (actionId == EditorInfo.IME_ACTION_SEARCH) {
                //hide
                var imm: InputMethodManager = v.context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
                imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS)

-                val key = v.text.toString().toUpperCase()
+                val key = v.text.toString().uppercase()
                val apps = ArrayList<AppInfo>()
                if (TextUtils.isEmpty(key)) {
                    appsAll?.forEach {
@@ -162,13 +166,13 @@ class PerAppProxyActivity : BaseActivity() {
                    }
                } else {
                    appsAll?.forEach {
-                        if (it.appName.toUpperCase().indexOf(key) >= 0) {
+                        if (it.appName.uppercase().indexOf(key) >= 0) {
                            apps.add(it)
                        }
                    }
                }
                adapter = PerAppProxyAdapter(this, apps, adapter?.blacklist)
-                recycler_view.adapter = adapter
+                binding.recyclerView.adapter = adapter
                adapter?.notifyDataSetChanged()
                true
            } else {
@@ -184,7 +188,7 @@ class PerAppProxyActivity : BaseActivity() {
        }
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.menu_bypass_list, menu)
        return super.onCreateOptionsMenu(menu)
    }
@@ -226,7 +230,7 @@ class PerAppProxyActivity : BaseActivity() {
                ""
            }
            launch(Dispatchers.Main) {
-                Log.d("selectProxyApp", content)
+                Log.d(ANG_PACKAGE, content)
                selectProxyApp(content)
                toast(R.string.toast_success)
            }
@@ -246,11 +250,11 @@ class PerAppProxyActivity : BaseActivity() {

            adapter?.blacklist!!.clear()

-            if (switch_bypass_apps.isChecked) {
+            if (binding.switchBypassApps.isChecked) {
                adapter?.let {
                    it.apps.forEach block@{
                        val packageName = it.packageName
-                        Log.d("selectProxyApp2", packageName)
+                        Log.d(ANG_PACKAGE, packageName)
                        if (proxyApps.indexOf(packageName) < 0) {
                            adapter?.blacklist!!.add(packageName)
                            println(packageName)
@@ -263,7 +267,7 @@ class PerAppProxyActivity : BaseActivity() {
                adapter?.let {
                    it.apps.forEach block@{
                        val packageName = it.packageName
-                        Log.d("selectProxyApp3", packageName)
+                        Log.d(ANG_PACKAGE, packageName)
                        if (proxyApps.indexOf(packageName) >= 0) {
                            adapter?.blacklist!!.add(packageName)
                            println(packageName)
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyAdapter.kt
@@ -1,13 +1,13 @@
 package com.v2ray.ang.ui

 import android.graphics.Color
-import android.support.v7.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ItemRecyclerBypassListBinding
 import com.v2ray.ang.dto.AppInfo
-import kotlinx.android.synthetic.main.item_recycler_bypass_list.view.*
 import java.util.*

 class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, blacklist: MutableSet<String>?) :
@@ -18,8 +18,7 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
        private const val VIEW_TYPE_ITEM = 1
    }

-    private var mActivity: BaseActivity = activity
-    val blacklist = if (blacklist == null) HashSet<String>() else HashSet<String>(blacklist)
+    val blacklist = if (blacklist == null) HashSet() else HashSet(blacklist)

    override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
        if (holder is AppViewHolder) {
@@ -43,8 +42,7 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
 //            VIEW_TYPE_ITEM -> AppViewHolder(ctx.layoutInflater
 //                    .inflate(R.layout.item_recycler_bypass_list, parent, false))

-            else -> AppViewHolder(LayoutInflater.from(ctx)
-                    .inflate(R.layout.item_recycler_bypass_list, parent, false))
+            else -> AppViewHolder(ItemRecyclerBypassListBinding.inflate(LayoutInflater.from(ctx), parent, false))

        }
    }
@@ -53,30 +51,25 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl

    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)

-    inner class AppViewHolder(itemView: View) : BaseViewHolder(itemView),
+    inner class AppViewHolder(private val itemBypassBinding: ItemRecyclerBypassListBinding) : BaseViewHolder(itemBypassBinding.root),
            View.OnClickListener {
        private val inBlacklist: Boolean get() = blacklist.contains(appInfo.packageName)
        private lateinit var appInfo: AppInfo

-        val icon = itemView.icon!!
-        val name = itemView.name!!
-        val package_name = itemView.package_name!!
-        val checkBox = itemView.check_box!!
-
        fun bind(appInfo: AppInfo) {
            this.appInfo = appInfo

-            icon.setImageDrawable(appInfo.appIcon)
+            itemBypassBinding.icon.setImageDrawable(appInfo.appIcon)
 //            name.text = appInfo.appName

-            checkBox.isChecked = inBlacklist
-            package_name.text = appInfo.packageName
+            itemBypassBinding.checkBox.isChecked = inBlacklist
+            itemBypassBinding.packageName.text = appInfo.packageName
            if (appInfo.isSystemApp) {
-                name.text = String.format("** %1s", appInfo.appName)
-                name.setTextColor(Color.RED)
+                itemBypassBinding.name.text = String.format("** %1s", appInfo.appName)
+                itemBypassBinding.name.setTextColor(Color.RED)
            } else {
-                name.text = appInfo.appName
-                name.setTextColor(Color.DKGRAY)
+                itemBypassBinding.name.text = appInfo.appName
+                itemBypassBinding.name.setTextColor(Color.DKGRAY)
            }

            itemView.setOnClickListener(this)
@@ -85,10 +78,10 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
        override fun onClick(v: View?) {
            if (inBlacklist) {
                blacklist.remove(appInfo.packageName)
-                checkBox.isChecked = false
+                itemBypassBinding.checkBox.isChecked = false
            } else {
                blacklist.add(appInfo.packageName)
-                checkBox.isChecked = true
+                itemBypassBinding.checkBox.isChecked = true
            }
        }
    }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsActivity.kt
@@ -3,19 +3,23 @@ package com.v2ray.ang.ui
 import android.graphics.Color
 import android.os.Bundle
 import com.v2ray.ang.R
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
+import com.google.android.material.tabs.TabLayoutMediator
 import com.v2ray.ang.AppConfig
-import kotlinx.android.synthetic.main.activity_routing_settings.*
-
+import com.v2ray.ang.databinding.ActivityRoutingSettingsBinding

 class RoutingSettingsActivity : BaseActivity() {
+    private lateinit var binding: ActivityRoutingSettingsBinding
+
    private val titles: Array<out String> by lazy {
        resources.getStringArray(R.array.routing_tag)
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_routing_settings)
+        binding = ActivityRoutingSettingsBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)

        title = getString(R.string.routing_settings_title)
        supportActionBar?.setDisplayHomeAsUpEnabled(true)
@@ -25,9 +29,11 @@ class RoutingSettingsActivity : BaseActivity() {
        fragments.add(RoutingSettingsFragment().newInstance(AppConfig.PREF_V2RAY_ROUTING_DIRECT))
        fragments.add(RoutingSettingsFragment().newInstance(AppConfig.PREF_V2RAY_ROUTING_BLOCKED))

-        val adapter = FragmentAdapter(supportFragmentManager, fragments, titles.toList())
-        viewpager?.adapter = adapter
-        tablayout.setTabTextColors(Color.BLACK, Color.RED)
-        tablayout.setupWithViewPager(viewpager)
+        val adapter = FragmentAdapter(this, fragments)
+        binding.viewpager.adapter = adapter
+        binding.tablayout.setTabTextColors(Color.BLACK, Color.RED)
+        TabLayoutMediator(binding.tablayout, binding.viewpager) { tab, position ->
+            tab.text = titles[position]
+        }.attach()
    }
 }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsFragment.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsFragment.kt
@@ -4,34 +4,37 @@ import android.Manifest
 import android.app.Activity.RESULT_OK
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.Fragment
-import android.support.v7.preference.PreferenceManager
+import android.text.TextUtils
+import androidx.fragment.app.Fragment
+import androidx.preference.PreferenceManager
 import android.view.*
-import com.v2ray.ang.R
-import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.fragment_routing_settings.*
 import android.view.MenuInflater
+import androidx.activity.result.contract.ActivityResultContracts
 import com.tbruyelle.rxpermissions.RxPermissions
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.R
+import com.v2ray.ang.databinding.FragmentRoutingSettingsBinding
 import com.v2ray.ang.extension.toast
+import com.v2ray.ang.extension.v2RayApplication
+import com.v2ray.ang.util.Utils
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import java.net.URL

 class RoutingSettingsFragment : Fragment() {
+    private lateinit var binding: FragmentRoutingSettingsBinding
    companion object {
        private const val routing_arg = "routing_arg"
-        private const val REQUEST_SCAN_REPLACE = 11
-        private const val REQUEST_SCAN_APPEND = 12
    }

-    val defaultSharedPreferences by lazy { PreferenceManager.getDefaultSharedPreferences(context) }
+    val defaultSharedPreferences by lazy { PreferenceManager.getDefaultSharedPreferences(requireContext()) }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
                              savedInstanceState: Bundle?): View? {
        // Inflate the layout for this fragment
-        return inflater.inflate(R.layout.fragment_routing_settings, container, false)
+        binding = FragmentRoutingSettingsBinding.inflate(layoutInflater)
+        return binding.root// inflater.inflate(R.layout.fragment_routing_settings, container, false)
    }

    fun newInstance(arg: String): Fragment {
@@ -45,8 +48,8 @@ class RoutingSettingsFragment : Fragment() {
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

-        val content = defaultSharedPreferences.getString(arguments!!.getString(routing_arg), "")
-        et_routing_content.text = Utils.getEditable(content!!)
+        val content = defaultSharedPreferences.getString(requireArguments().getString(routing_arg), "")
+        binding.etRoutingContent.text = Utils.getEditable(content!!)

        setHasOptionsMenu(true)
    }
@@ -58,21 +61,21 @@ class RoutingSettingsFragment : Fragment() {

    override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
        R.id.save_routing -> {
-            val content = et_routing_content.text.toString()
-            defaultSharedPreferences.edit().putString(arguments!!.getString(routing_arg), content).apply()
+            val content = binding.etRoutingContent.text.toString()
+            defaultSharedPreferences.edit().putString(requireArguments().getString(routing_arg), content).apply()
            activity?.toast(R.string.toast_success)
            true
        }
        R.id.del_routing -> {
-            et_routing_content.text = null
+            binding.etRoutingContent.text = null
            true
        }
        R.id.scan_replace -> {
-            scanQRcode(REQUEST_SCAN_REPLACE)
+            scanQRcode(true)
            true
        }
        R.id.scan_append -> {
-            scanQRcode(REQUEST_SCAN_APPEND)
+            scanQRcode(false)
            true
        }
        R.id.default_rules -> {
@@ -82,17 +85,26 @@ class RoutingSettingsFragment : Fragment() {
        else -> super.onOptionsItemSelected(item)
    }

-    fun scanQRcode(requestCode: Int): Boolean {
+    private fun saveRouting() {
+        val content = binding.etRoutingContent.text.toString()
+        defaultSharedPreferences.edit().putString(requireArguments().getString(routing_arg), content).apply()
+        activity?.toast(R.string.toast_success)
+    }
+
+    fun scanQRcode(forReplace: Boolean): Boolean {
 //        try {
 //            startActivityForResult(Intent("com.google.zxing.client.android.SCAN")
 //                    .addCategory(Intent.CATEGORY_DEFAULT)
 //                    .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP), requestCode)
 //        } catch (e: Exception) {
-        RxPermissions(activity!!)
+        RxPermissions(requireActivity())
                .request(Manifest.permission.CAMERA)
                .subscribe {
                    if (it)
-                        startActivityForResult(Intent(activity, ScannerActivity::class.java), requestCode)
+                        if (forReplace)
+                            scanQRCodeForReplace.launch(Intent(activity, ScannerActivity::class.java))
+                        else
+                            scanQRCodeForAppend.launch(Intent(activity, ScannerActivity::class.java))
                    else
                        activity?.toast(R.string.toast_permission_denied)
                }
@@ -100,9 +112,23 @@ class RoutingSettingsFragment : Fragment() {
        return true
    }

+    private val scanQRCodeForReplace = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == RESULT_OK) {
+            val content = it.data?.getStringExtra("SCAN_RESULT")
+            binding.etRoutingContent.text = Utils.getEditable(content!!)
+        }
+    }
+
+    private val scanQRCodeForAppend = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == RESULT_OK) {
+            val content = it.data?.getStringExtra("SCAN_RESULT")
+            binding.etRoutingContent.text = Utils.getEditable("${binding.etRoutingContent.text},$content")
+        }
+    }
+
    fun setDefaultRules(): Boolean {
        var url = AppConfig.v2rayCustomRoutingListUrl
-        when (arguments!!.getString(routing_arg)) {
+        when (requireArguments().getString(routing_arg)) {
            AppConfig.PREF_V2RAY_ROUTING_AGENT -> {
                url += AppConfig.TAG_AGENT
            }
@@ -123,28 +149,16 @@ class RoutingSettingsFragment : Fragment() {
                ""
            }
            launch(Dispatchers.Main) {
-                et_routing_content.text = Utils.getEditable(content)
-                activity?.toast(R.string.toast_success)
+                val routingList = if (TextUtils.isEmpty(content)) {
+                    Utils.readTextFromAssets(activity?.v2RayApplication!!, "custom_routing_$tag")
+                } else {
+                    content
+                }
+                binding.etRoutingContent.text = Utils.getEditable(routingList)
+                saveRouting()
+                //toast(R.string.toast_success)
            }
        }
        return true
    }
-
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        super.onActivityResult(requestCode, resultCode, data)
-        when (requestCode) {
-            REQUEST_SCAN_REPLACE ->
-                if (resultCode == RESULT_OK) {
-                    val content = data?.getStringExtra("SCAN_RESULT")
-                    et_routing_content.text = Utils.getEditable(content!!)
-                }
-            REQUEST_SCAN_APPEND ->
-                if (resultCode == RESULT_OK) {
-                    val content = data?.getStringExtra("SCAN_RESULT")
-                    et_routing_content.text = Utils.getEditable("${et_routing_content.text},$content")
-                }
-        }
-    }
-
-
 }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScScannerActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScScannerActivity.kt
@@ -6,25 +6,23 @@ import com.tbruyelle.rxpermissions.RxPermissions
 import com.v2ray.ang.R
 import com.v2ray.ang.util.AngConfigManager
 import android.os.Bundle
+import androidx.activity.result.contract.ActivityResultContracts
 import com.v2ray.ang.extension.toast

 class ScScannerActivity : BaseActivity() {
-    companion object {
-        private const val REQUEST_SCAN = 1
-    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_none)
-        importQRcode(REQUEST_SCAN)
+        importQRcode()
    }

-    fun importQRcode(requestCode: Int): Boolean {
+    fun importQRcode(): Boolean {
        RxPermissions(this)
                .request(Manifest.permission.CAMERA)
                .subscribe {
                    if (it)
-                        startActivityForResult(Intent(this, ScannerActivity::class.java), requestCode)
+                        scanQRCode.launch(Intent(this, ScannerActivity::class.java))
                    else
                        toast(R.string.toast_permission_denied)
                }
@@ -32,21 +30,16 @@ class ScScannerActivity : BaseActivity() {
        return true
    }

-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        super.onActivityResult(requestCode, resultCode, data)
-        when (requestCode) {
-            REQUEST_SCAN ->
-                if (resultCode == RESULT_OK) {
-                    val count = AngConfigManager.importBatchConfig(data?.getStringExtra("SCAN_RESULT"), "")
-                    if (count > 0) {
-                        toast(R.string.toast_success)
-                    } else {
-                        toast(R.string.toast_failure)
-                    }
-                    startActivity(Intent(this, MainActivity::class.java))
-                }
+    private val scanQRCode = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == RESULT_OK) {
+            val count = AngConfigManager.importBatchConfig(it.data?.getStringExtra("SCAN_RESULT"), "")
+            if (count > 0) {
+                toast(R.string.toast_success)
+            } else {
+                toast(R.string.toast_failure)
+            }
+            startActivity(Intent(this, MainActivity::class.java))
        }
        finish()
    }
-
 }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScannerActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScannerActivity.kt
@@ -9,6 +9,7 @@ import android.content.Intent
 import android.graphics.BitmapFactory
 import android.view.Menu
 import android.view.MenuItem
+import androidx.activity.result.contract.ActivityResultContracts
 import com.google.zxing.BarcodeFormat
 import com.tbruyelle.rxpermissions.RxPermissions
 import com.v2ray.ang.R
@@ -16,10 +17,6 @@ import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.QRCodeDecoder

 class ScannerActivity : BaseActivity(), ZXingScannerView.ResultHandler {
-    companion object {
-        private const val REQUEST_FILE_CHOOSER = 2
-    }
-

    private var mScannerView: ZXingScannerView? = null

@@ -59,14 +56,14 @@ class ScannerActivity : BaseActivity(), ZXingScannerView.ResultHandler {
 //        mScannerView!!.resumeCameraPreview(this)
    }

-    fun finished(text: String) {
+    private fun finished(text: String) {
        val intent = Intent()
        intent.putExtra("SCAN_RESULT", text)
        setResult(Activity.RESULT_OK, intent)
        finish()
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.menu_scanner, menu)
        return true
    }
@@ -97,30 +94,22 @@ class ScannerActivity : BaseActivity(), ZXingScannerView.ResultHandler {
        //intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)

        try {
-            startActivityForResult(
-                    Intent.createChooser(intent, getString(R.string.title_file_chooser)),
-                    REQUEST_FILE_CHOOSER)
+            chooseFile.launch(Intent.createChooser(intent, getString(R.string.title_file_chooser)))
        } catch (ex: android.content.ActivityNotFoundException) {
            toast(R.string.toast_require_file_manager)
        }
    }

-
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        super.onActivityResult(requestCode, resultCode, data)
-        when (requestCode) {
-            REQUEST_FILE_CHOOSER -> {
-                val uri = data?.data
-                if (resultCode == RESULT_OK && uri != null) {
-                    try {
-                        val bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri))
-                        val text = QRCodeDecoder.syncDecodeQRCode(bitmap)
-                        finished(text)
-                    } catch (e: Exception) {
-                        e.printStackTrace()
-                        toast(e.message.toString())
-                    }
-                }
+    private val chooseFile = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        val uri = it.data?.data
+        if (it.resultCode == RESULT_OK && uri != null) {
+            try {
+                val bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri))
+                val text = QRCodeDecoder.syncDecodeQRCode(bitmap)
+                finished(text)
+            } catch (e: Exception) {
+                e.printStackTrace()
+                toast(e.message.toString())
            }
        }
    }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerActivity.kt
@@ -1,16 +1,17 @@
 package com.v2ray.ang.ui

 import android.os.Bundle
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.text.TextUtils
 import android.view.Menu
 import android.view.MenuItem
+import android.view.View
+import android.widget.*
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.R
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.dto.ServerConfig
 import com.v2ray.ang.dto.V2rayConfig
-import com.v2ray.ang.dto.V2rayConfig.Companion.DEFAULT_NETWORK
 import com.v2ray.ang.dto.V2rayConfig.Companion.DEFAULT_PORT
 import com.v2ray.ang.dto.V2rayConfig.Companion.XTLS
 import com.v2ray.ang.extension.toast
@@ -18,18 +19,6 @@ import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.MmkvManager.ID_MAIN
 import com.v2ray.ang.util.MmkvManager.KEY_SELECTED_SERVER
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_server_socks.*
-import kotlinx.android.synthetic.main.activity_server_vmess.*
-import kotlinx.android.synthetic.main.activity_server_vmess.et_address
-import kotlinx.android.synthetic.main.activity_server_vmess.et_id
-import kotlinx.android.synthetic.main.activity_server_vmess.et_path
-import kotlinx.android.synthetic.main.activity_server_vmess.et_port
-import kotlinx.android.synthetic.main.activity_server_vmess.et_remarks
-import kotlinx.android.synthetic.main.activity_server_vmess.et_request_host
-import kotlinx.android.synthetic.main.activity_server_vmess.sp_allow_insecure
-import kotlinx.android.synthetic.main.activity_server_vmess.sp_header_type
-import kotlinx.android.synthetic.main.activity_server_vmess.sp_network
-import kotlinx.android.synthetic.main.activity_server_vmess.sp_stream_security

 class ServerActivity : BaseActivity() {

@@ -56,8 +45,14 @@ class ServerActivity : BaseActivity() {
    private val networks: Array<out String> by lazy {
        resources.getStringArray(R.array.networks)
    }
-    private val headertypes: Array<out String> by lazy {
-        resources.getStringArray(R.array.headertypes)
+    private val tcpTypes: Array<out String> by lazy {
+        resources.getStringArray(R.array.header_type_tcp)
+    }
+    private val kcpAndQuicTypes: Array<out String> by lazy {
+        resources.getStringArray(R.array.header_type_kcp_and_quic)
+    }
+    private val grpcModes: Array<out String> by lazy {
+        resources.getStringArray(R.array.mode_type_grpc)
    }
    private val streamSecuritys: Array<out String> by lazy {
        resources.getStringArray(R.array.streamsecurityxs)
@@ -66,6 +61,26 @@ class ServerActivity : BaseActivity() {
        resources.getStringArray(R.array.allowinsecures)
    }

+    // Kotlin synthetics was used, but since it is removed in 1.8. We switch to old manual approach.
+    // We don't use AndroidViewBinding because, it is better to share similar logics for different
+    // protocols. Use findViewById manually ensures the xml are de-coupled with the activity logic.
+    private val et_remarks: EditText by lazy { findViewById(R.id.et_remarks) }
+    private val et_address: EditText by lazy { findViewById(R.id.et_address) }
+    private val et_port: EditText by lazy { findViewById(R.id.et_port) }
+    private val et_id: EditText by lazy { findViewById(R.id.et_id) }
+    //private val et_alterId: EditText? by lazy { findViewById(R.id.et_alterId) }
+    private val et_security: EditText? by lazy { findViewById(R.id.et_security) }
+    //private val sp_flow: Spinner? by lazy { findViewById(R.id.sp_flow) }
+    private val sp_security: Spinner? by lazy { findViewById(R.id.sp_security) }
+    private val sp_stream_security: Spinner? by lazy { findViewById(R.id.sp_stream_security) }
+    private val sp_allow_insecure: Spinner? by lazy { findViewById(R.id.sp_allow_insecure) }
+    //private val et_sni: EditText? by lazy { findViewById(R.id.et_sni) }
+    private val sp_network: Spinner? by lazy { findViewById(R.id.sp_network) }
+    private val sp_header_type: Spinner? by lazy { findViewById(R.id.sp_header_type) }
+    private val sp_header_type_title: TextView? by lazy { findViewById(R.id.sp_header_type_title) }
+    private val et_request_host: EditText? by lazy { findViewById(R.id.et_request_host) }
+    private val et_path: EditText? by lazy { findViewById(R.id.et_path) }
+
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        title = getString(R.string.title_server)
@@ -79,6 +94,26 @@ class ServerActivity : BaseActivity() {
 //            EConfigType.VLESS -> setContentView(R.layout.activity_server_vless)
 //            EConfigType.TROJAN -> setContentView(R.layout.activity_server_trojan)
        }
+        sp_network?.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
+            override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
+                val types = transportTypes(networks[position])
+                sp_header_type?.isEnabled = types.size > 1
+                val adapter = ArrayAdapter(this@ServerActivity, android.R.layout.simple_spinner_item, types)
+                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
+                sp_header_type?.adapter = adapter
+                sp_header_type_title?.text = if (networks[position] == "grpc")
+                    getString(R.string.server_lab_mode_type) else
+                    getString(R.string.server_lab_head_type)
+                config?.getProxyOutbound()?.getTransportSettingDetails()?.let { transportDetails ->
+                    sp_header_type?.setSelection(Utils.arrayFind(types, transportDetails[0]))
+                    et_request_host?.text = Utils.getEditable(transportDetails[1])
+                    et_path?.text = Utils.getEditable(transportDetails[2])
+                }
+            }
+            override fun onNothingSelected(parent: AdapterView<*>?) {
+                // do nothing
+            }
+        }
        if (config != null) {
            bindingServer(config)
        } else {
@@ -98,11 +133,10 @@ class ServerActivity : BaseActivity() {
        et_address.text = Utils.getEditable(outbound.getServerAddress().orEmpty())
        et_port.text = Utils.getEditable(outbound.getServerPort()?.toString() ?: DEFAULT_PORT.toString())
        et_id.text = Utils.getEditable(outbound.getPassword().orEmpty())
-        et_alterId?.text = Utils.getEditable(outbound.settings?.vnext?.get(0)?.users?.get(0)?.alterId.toString())
        if (config.configType == EConfigType.SOCKS) {
-            et_security.text = Utils.getEditable(outbound.settings?.servers?.get(0)?.users?.get(0)?.user.orEmpty())
+            et_security?.text = Utils.getEditable(outbound.settings?.servers?.get(0)?.users?.get(0)?.user.orEmpty())
        } else if (config.configType == EConfigType.VLESS) {
-            et_security.text = Utils.getEditable(outbound.getSecurityEncryption().orEmpty())
+            et_security?.text = Utils.getEditable(outbound.getSecurityEncryption().orEmpty())
            val flow = Utils.arrayFind(flows, outbound.settings?.vnext?.get(0)?.users?.get(0)?.flow.orEmpty())
            if (flow >= 0) {
                //sp_flow.setSelection(flow)
@@ -122,18 +156,13 @@ class ServerActivity : BaseActivity() {
                if (allowinsecure >= 0) {
                    sp_allow_insecure?.setSelection(allowinsecure)
                }
-                et_request_host.text = Utils.getEditable(tlsSetting.serverName)
+                et_request_host?.text = Utils.getEditable(tlsSetting.serverName)
            }
        }
        val network = Utils.arrayFind(networks, streamSetting.network)
        if (network >= 0) {
            sp_network?.setSelection(network)
        }
-        outbound.getTransportSettingDetails()?.let { transportDetails ->
-            sp_header_type.setSelection(Utils.arrayFind(headertypes, transportDetails[0]))
-            et_request_host.text = Utils.getEditable(transportDetails[1])
-            et_path.text = Utils.getEditable(transportDetails[2])
-        }
        return true
    }

@@ -145,7 +174,6 @@ class ServerActivity : BaseActivity() {
        et_address.text = null
        et_port.text = Utils.getEditable(DEFAULT_PORT.toString())
        et_id.text = null
-        et_alterId?.text = Utils.getEditable("0")
        sp_security?.setSelection(0)
        sp_network?.setSelection(0)

@@ -182,13 +210,6 @@ class ServerActivity : BaseActivity() {
            toast(R.string.server_lab_id)
            return false
        }
-        et_alterId?.let {
-            val alterId = Utils.parseInt(et_alterId.text.toString())
-            if (alterId < 0) {
-                toast(R.string.server_lab_alterid)
-                return false
-            }
-        }

        config.remarks = et_remarks.text.toString().trim()
        config.outboundBean?.settings?.vnext?.get(0)?.let { vnext ->
@@ -198,7 +219,7 @@ class ServerActivity : BaseActivity() {
            saveServers(server, port, config)
        }
        config.outboundBean?.streamSettings?.let {
-            saveStreamSettings(it, config)
+            saveStreamSettings(it)
        }

        MmkvManager.encodeServerConfig(editGuid, config)
@@ -212,13 +233,11 @@ class ServerActivity : BaseActivity() {
        vnext.port = port
        vnext.users[0].id = et_id.text.toString().trim()
        if (config.configType == EConfigType.VMESS) {
-            vnext.users[0].alterId = Utils.parseInt(et_alterId.text.toString())
-            vnext.users[0].security = securitys[sp_security.selectedItemPosition]
+            vnext.users[0].security = securitys[sp_security?.selectedItemPosition ?: 0]
        } else if (config.configType == EConfigType.VLESS) {
-            vnext.users[0].encryption = et_security.text.toString().trim()
-            if (streamSecuritys[sp_stream_security.selectedItemPosition] == XTLS) {
-//                vnext.users[0].flow = if (flows[sp_flow.selectedItemPosition].isBlank()) V2rayConfig.DEFAULT_FLOW
-//                else flows[sp_flow.selectedItemPosition]
+            vnext.users[0].encryption = et_security?.text.toString().trim()
+            if (streamSecuritys[sp_stream_security?.selectedItemPosition ?: 0] == XTLS) {
+//                vnext.users[0].flow = flows[sp_flow.selectedItemPosition].ifBlank { V2rayConfig.DEFAULT_FLOW }
            } else {
                vnext.users[0].flow = ""
            }
@@ -230,13 +249,13 @@ class ServerActivity : BaseActivity() {
        server.port = port
        if (config.configType == EConfigType.SHADOWSOCKS) {
            server.password = et_id.text.toString().trim()
-            server.method = shadowsocksSecuritys[sp_security.selectedItemPosition]
+            server.method = shadowsocksSecuritys[sp_security?.selectedItemPosition ?: 0]
        } else if (config.configType == EConfigType.SOCKS) {
-            if (TextUtils.isEmpty(et_security.text) && TextUtils.isEmpty(et_id.text)) {
+            if (TextUtils.isEmpty(et_security?.text) && TextUtils.isEmpty(et_id.text)) {
                server.users = null
            } else {
                val socksUsersBean = V2rayConfig.OutboundBean.OutSettingsBean.ServersBean.SocksUsersBean()
-                socksUsersBean.user = et_security.text.toString().trim()
+                socksUsersBean.user = et_security?.text.toString().trim()
                socksUsersBean.pass = et_id.text.toString().trim()
                server.users = listOf(socksUsersBean)
            }
@@ -245,29 +264,48 @@ class ServerActivity : BaseActivity() {
        }
    }

-    private fun saveStreamSettings(streamSetting: V2rayConfig.OutboundBean.StreamSettingsBean, config: ServerConfig) {
-        val requestHost = et_request_host?.text.toString().trim()
-        val path = et_path?.text.toString().trim()
+    private fun saveStreamSettings(streamSetting: V2rayConfig.OutboundBean.StreamSettingsBean) {
+        val network = sp_network?.selectedItemPosition ?: return
+        val type = sp_header_type?.selectedItemPosition ?: return
+        val requestHost = et_request_host?.text?.toString()?.trim() ?: return
+        val path = et_path?.text?.toString()?.trim() ?: return
+        //val sniField = et_sni?.text?.toString()?.trim() ?: return
+        val allowInsecureField = sp_allow_insecure?.selectedItemPosition ?: return
+        val streamSecurity = sp_stream_security?.selectedItemPosition ?: return
+
        var sni = streamSetting.populateTransportSettings(
-                if (sp_network != null) networks[sp_network.selectedItemPosition] else DEFAULT_NETWORK,
-                if (sp_header_type != null) headertypes[sp_header_type.selectedItemPosition] else "",
-                requestHost,
-                path,
-                path,
-                requestHost,
-                path
+                transport = networks[network],
+                headerType = transportTypes(networks[network])[type],
+                host = requestHost,
+                path = path,
+                seed = path,
+                quicSecurity = requestHost,
+                key = path,
+                mode = transportTypes(networks[network])[type],
+                serviceName = path
        )
-        val allowInsecure = if (sp_allow_insecure == null || allowinsecures[sp_allow_insecure.selectedItemPosition].isBlank()) {
+        //if (sniField.isNotBlank()) {
+        //    sni = sniField
+        //}
+        val allowInsecure = if (allowinsecures[allowInsecureField].isBlank()) {
            false//settingsStorage?.decodeBool(PREF_ALLOW_INSECURE) ?: false
        } else {
-            allowinsecures[sp_allow_insecure.selectedItemPosition].toBoolean()
+            allowinsecures[allowInsecureField].toBoolean()
+        }
+        streamSetting.populateTlsSettings(streamSecuritys[streamSecurity], allowInsecure, sni)
+
+    }
+
+    private fun transportTypes(network: String?): Array<out String> {
+        return if (network == "tcp") {
+            tcpTypes
+        } else if (network == "kcp" || network == "quic") {
+            kcpAndQuicTypes
+        } else if (network == "grpc") {
+            grpcModes
+        } else {
+            arrayOf("---")
        }
-        val defaultTls = if (config.configType == EConfigType.TROJAN) V2rayConfig.TLS else ""
-        streamSetting.populateTlsSettings(
-                if (sp_stream_security != null) streamSecuritys[sp_stream_security.selectedItemPosition] else defaultTls,
-                allowInsecure,
-                sni
-        )
    }

    /**
@@ -285,10 +323,10 @@ class ServerActivity : BaseActivity() {
        return true
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.action_server, menu)
-        val delButton = menu?.findItem(R.id.del_config)
-        val saveButton = menu?.findItem(R.id.save_config)
+        val delButton = menu.findItem(R.id.del_config)
+        val saveButton = menu.findItem(R.id.save_config)

        if (editGuid.isNotEmpty()) {
            if (isRunning) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
@@ -1,24 +1,29 @@
 package com.v2ray.ang.ui

 import android.os.Bundle
-import android.support.v7.app.AlertDialog
 import android.text.TextUtils
 import android.view.Menu
 import android.view.MenuItem
+import android.widget.Toast
+import androidx.appcompat.app.AlertDialog
+import com.blacksquircle.ui.language.json.JsonLanguage
 import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityServerCustomConfigBinding
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.dto.ServerConfig
 import com.v2ray.ang.dto.V2rayConfig
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_server_custom_config.*
+import me.drakeet.support.toast.ToastCompat

 class ServerCustomConfigActivity : BaseActivity() {
+    private lateinit var binding: ActivityServerCustomConfigBinding

    private val mainStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_MAIN, MMKV.MULTI_PROCESS_MODE) }
+    private val serverRawStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SERVER_RAW, MMKV.MULTI_PROCESS_MODE) }
    private val editGuid by lazy { intent.getStringExtra("guid").orEmpty() }
    private val isRunning by lazy {
        intent.getBooleanExtra("isRunning", false)
@@ -28,9 +33,12 @@ class ServerCustomConfigActivity : BaseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_server_custom_config)
+        binding = ActivityServerCustomConfigBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
        title = getString(R.string.title_server)

+        binding.editor.language = JsonLanguage()
        val config = MmkvManager.decodeServerConfig(editGuid)
        if (config != null) {
            bindingServer(config)
@@ -44,8 +52,13 @@ class ServerCustomConfigActivity : BaseActivity() {
     * bingding seleced server config
     */
    private fun bindingServer(config: ServerConfig): Boolean {
-        et_remarks.text = Utils.getEditable(config.remarks)
-        tv_content.text = Utils.getEditable(config.fullConfig?.toPrettyPrinting().orEmpty())
+        binding.etRemarks.text = Utils.getEditable(config.remarks)
+        val raw = serverRawStorage?.decodeString(editGuid)
+        if (raw.isNullOrBlank()) {
+            binding.editor.setTextContent(Utils.getEditable(config.fullConfig?.toPrettyPrinting().orEmpty()))
+        } else {
+            binding.editor.setTextContent(Utils.getEditable(raw))
+        }
        return true
    }

@@ -53,7 +66,7 @@ class ServerCustomConfigActivity : BaseActivity() {
     * clear or init server config
     */
    private fun clearServer(): Boolean {
-        et_remarks.text = null
+        binding.etRemarks.text = null
        return true
    }

@@ -61,24 +74,25 @@ class ServerCustomConfigActivity : BaseActivity() {
     * save server config
     */
    private fun saveServer(): Boolean {
-        if (TextUtils.isEmpty(et_remarks.text.toString())) {
+        if (TextUtils.isEmpty(binding.etRemarks.text.toString())) {
            toast(R.string.server_lab_remarks)
            return false
        }

        val v2rayConfig = try {
-            Gson().fromJson(tv_content.text.toString(), V2rayConfig::class.java)
+            Gson().fromJson(binding.editor.text.toString(), V2rayConfig::class.java)
        } catch (e: Exception) {
            e.printStackTrace()
-            toast(R.string.toast_malformed_josn)
+            ToastCompat.makeText(this, "${getString(R.string.toast_malformed_josn)} ${e.cause?.message}", Toast.LENGTH_LONG).show()
            return false
        }

        val config = MmkvManager.decodeServerConfig(editGuid) ?: ServerConfig.create(EConfigType.CUSTOM)
-        config.remarks = et_remarks.text.toString().trim()
+        config.remarks = binding.etRemarks.text.toString().trim()
        config.fullConfig = v2rayConfig

        MmkvManager.encodeServerConfig(editGuid, config)
+        serverRawStorage?.encode(editGuid, binding.editor.text.toString())
        toast(R.string.toast_success)
        finish()
        return true
@@ -99,10 +113,10 @@ class ServerCustomConfigActivity : BaseActivity() {
        return true
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.action_server, menu)
-        val delButton = menu?.findItem(R.id.del_config)
-        val saveButton = menu?.findItem(R.id.save_config)
+        val delButton = menu.findItem(R.id.del_config)
+        val saveButton = menu.findItem(R.id.save_config)

        if (editGuid.isNotEmpty()) {
            if (isRunning) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SettingsActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SettingsActivity.kt
@@ -1,10 +1,11 @@
 package com.v2ray.ang.ui

-import android.arch.lifecycle.ViewModelProviders
 import android.content.Intent
 import android.os.Bundle
-import android.support.v7.preference.*
+import androidx.preference.*
+import android.text.TextUtils
 import android.view.View
+import androidx.activity.viewModels
 import com.v2ray.ang.R
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.extension.toast
@@ -13,8 +14,7 @@ import com.v2ray.ang.util.Utils
 import com.v2ray.ang.viewmodel.SettingsViewModel

 class SettingsActivity : BaseActivity() {
-
-    private val settingsViewModel by lazy { ViewModelProviders.of(this).get(SettingsViewModel::class.java) }
+    private val settingsViewModel: SettingsViewModel by viewModels()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
@@ -29,6 +29,10 @@ class SettingsActivity : BaseActivity() {

    class SettingsFragment : PreferenceFragmentCompat() {
        private val perAppProxy by lazy { findPreference(AppConfig.PREF_PER_APP_PROXY) as CheckBoxPreference }
+        private val localDns by lazy { findPreference(AppConfig.PREF_LOCAL_DNS_ENABLED) }
+        private val fakeDns by lazy { findPreference(AppConfig.PREF_FAKE_DNS_ENABLED) }
+        private val localDnsPort by lazy { findPreference(AppConfig.PREF_LOCAL_DNS_PORT) }
+        private val vpnDns by lazy { findPreference(AppConfig.PREF_VPN_DNS) }
        private val sppedEnabled by lazy { findPreference(AppConfig.PREF_SPEED_ENABLED) as CheckBoxPreference }
        private val sniffingEnabled by lazy { findPreference(AppConfig.PREF_SNIFFING_ENABLED) as CheckBoxPreference }
        private val proxySharing by lazy { findPreference(AppConfig.PREF_PROXY_SHARING) as CheckBoxPreference }
@@ -141,9 +145,21 @@ class SettingsActivity : BaseActivity() {
                    restartProxy()
                true
            }
-
+            localDns?.setOnPreferenceChangeListener{ _, any ->
+                updateLocalDns(any as Boolean)
+                true
+            }
+            localDnsPort?.setOnPreferenceChangeListener { _, any ->
+                val nval = any as String
+                localDnsPort?.summary = if (TextUtils.isEmpty(nval)) "10807" else nval
+                true
+            }
+            vpnDns?.setOnPreferenceChangeListener { _, any ->
+                vpnDns?.summary = any as String
+                true
+            }
            mode.setOnPreferenceChangeListener { _, newValue ->
-                updatePerAppProxy(newValue.toString())
+                updateMode(newValue.toString())
                true
            }
            mode.dialogLayoutResource = R.layout.preference_with_help_link
@@ -187,33 +203,44 @@ class SettingsActivity : BaseActivity() {

        override fun onStart() {
            super.onStart()
-            val defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity)
-            updatePerAppProxy(defaultSharedPreferences.getString(AppConfig.PREF_MODE, "VPN"))
-            remoteDns.summary = defaultSharedPreferences.getString(AppConfig.PREF_REMOTE_DNS, "")
+            val defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(requireActivity())
+            updateMode(defaultSharedPreferences.getString(AppConfig.PREF_MODE, "VPN"))
+            var remoteDnsString = defaultSharedPreferences.getString(AppConfig.PREF_REMOTE_DNS, "")
            domesticDns.summary = defaultSharedPreferences.getString(AppConfig.PREF_DOMESTIC_DNS, "")

-            if (remoteDns.summary == "") {
-                remoteDns.summary = AppConfig.DNS_AGENT
+            if (TextUtils.isEmpty(remoteDnsString)) {
+                remoteDnsString = AppConfig.DNS_AGENT
            }
-
            if ( domesticDns.summary == "") {
                domesticDns.summary = AppConfig.DNS_DIRECT
            }
+            remoteDns.summary = remoteDnsString
+            vpnDns?.summary = defaultSharedPreferences.getString(AppConfig.PREF_VPN_DNS, remoteDnsString)

 //            socksPort.summary = defaultSharedPreferences.getString(PREF_SOCKS_PORT, "10808")
 //            lanconnPort.summary = defaultSharedPreferences.getString(PREF_HTTP_PORT, "")
        }

-        private fun updatePerAppProxy(mode: String?) {
-            if (mode == "VPN") {
-                perAppProxy.isEnabled = true
-                perAppProxy.isChecked = PreferenceManager.getDefaultSharedPreferences(activity)
-                        .getBoolean(AppConfig.PREF_PER_APP_PROXY, false)
-            } else {
-                perAppProxy.isEnabled = false
-                perAppProxy.isChecked = false
+        private fun updateMode(mode: String?) {
+            val defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(requireActivity())
+            val vpn = mode == "VPN"
+            perAppProxy.isEnabled = vpn
+            perAppProxy.isChecked = PreferenceManager.getDefaultSharedPreferences(requireActivity())
+                    .getBoolean(AppConfig.PREF_PER_APP_PROXY, false)
+            localDns?.isEnabled = vpn
+            fakeDns?.isEnabled = vpn
+            localDnsPort?.isEnabled = vpn
+            vpnDns?.isEnabled = vpn
+            if (vpn) {
+                updateLocalDns(defaultSharedPreferences.getBoolean(AppConfig.PREF_LOCAL_DNS_ENABLED, false))
            }
        }
+
+        private fun updateLocalDns(enabled: Boolean) {
+            fakeDns?.isEnabled = enabled
+            localDnsPort?.isEnabled = enabled
+            vpnDns?.isEnabled = !enabled
+        }
    }

    fun onModeHelpClicked(view: View) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubEditActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubEditActivity.kt
@@ -1,20 +1,21 @@
 package com.v2ray.ang.ui

 import android.os.Bundle
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.text.TextUtils
 import android.view.Menu
 import android.view.MenuItem
 import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivitySubEditBinding
 import com.v2ray.ang.dto.SubscriptionItem
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_sub_edit.*

 class SubEditActivity : BaseActivity() {
+    private lateinit var binding: ActivitySubEditBinding

    var del_config: MenuItem? = null
    var save_config: MenuItem? = null
@@ -24,7 +25,9 @@ class SubEditActivity : BaseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_sub_edit)
+        binding = ActivitySubEditBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
        title = getString(R.string.title_sub_setting)

        val json = subStorage?.decodeString(editSubId)
@@ -40,8 +43,8 @@ class SubEditActivity : BaseActivity() {
     * bingding seleced server config
     */
    private fun bindingServer(subItem: SubscriptionItem): Boolean {
-        et_remarks.text = Utils.getEditable(subItem.remarks)
-        et_url.text = Utils.getEditable(subItem.url)
+        binding.etRemarks.text = Utils.getEditable(subItem.remarks)
+        binding.etUrl.text = Utils.getEditable(subItem.url)

        return true
    }
@@ -50,8 +53,8 @@ class SubEditActivity : BaseActivity() {
     * clear or init server config
     */
    private fun clearServer(): Boolean {
-        et_remarks.text = null
-        et_url.text = null
+        binding.etRemarks.text = null
+        binding.etUrl.text = null

        return true
    }
@@ -70,8 +73,8 @@ class SubEditActivity : BaseActivity() {
            subItem = SubscriptionItem()
        }

-        subItem.remarks = et_remarks.text.toString()
-        subItem.url = et_url.text.toString()
+        subItem.remarks = binding.etRemarks.text.toString()
+        subItem.url = binding.etUrl.text.toString()

        if (TextUtils.isEmpty(subItem.remarks)) {
            toast(R.string.sub_setting_remarks)
@@ -103,10 +106,10 @@ class SubEditActivity : BaseActivity() {
        return true
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.action_server, menu)
-        del_config = menu?.findItem(R.id.del_config)
-        save_config = menu?.findItem(R.id.save_config)
+        del_config = menu.findItem(R.id.del_config)
+        save_config = menu.findItem(R.id.save_config)

        if (editSubId.isEmpty()) {
            del_config?.isVisible = false
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingActivity.kt
@@ -4,26 +4,29 @@ import android.content.Intent
 import android.view.Menu
 import android.view.MenuItem
 import com.v2ray.ang.R
-import kotlinx.android.synthetic.main.activity_sub_setting.*
 import android.os.Bundle
-import android.support.v7.widget.LinearLayoutManager
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.v2ray.ang.databinding.ActivitySubSettingBinding
 import com.v2ray.ang.dto.SubscriptionItem
 import com.v2ray.ang.util.MmkvManager

 class SubSettingActivity : BaseActivity() {
+    private lateinit var binding: ActivitySubSettingBinding

    var subscriptions:List<Pair<String, SubscriptionItem>> = listOf()
    private val adapter by lazy { SubSettingRecyclerAdapter(this) }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_sub_setting)
+        binding = ActivitySubSettingBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)

        title = getString(R.string.title_sub_setting)

-        recycler_view.setHasFixedSize(true)
-        recycler_view.layoutManager = LinearLayoutManager(this)
-        recycler_view.adapter = adapter
+        binding.recyclerView.setHasFixedSize(true)
+        binding.recyclerView.layoutManager = LinearLayoutManager(this)
+        binding.recyclerView.adapter = adapter

        supportActionBar?.setDisplayHomeAsUpEnabled(true)
    }
@@ -34,10 +37,10 @@ class SubSettingActivity : BaseActivity() {
        adapter.notifyDataSetChanged()
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.action_sub_setting, menu)
-        menu?.findItem(R.id.del_config)?.isVisible = false
-        menu?.findItem(R.id.save_config)?.isVisible = false
+        menu.findItem(R.id.del_config)?.isVisible = false
+        menu.findItem(R.id.save_config)?.isVisible = false

        return super.onCreateOptionsMenu(menu)
    }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingRecyclerAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingRecyclerAdapter.kt
@@ -2,46 +2,34 @@ package com.v2ray.ang.ui

 import android.content.Intent
 import android.graphics.Color
-import android.support.v7.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
-import android.view.View
 import android.view.ViewGroup
-import com.v2ray.ang.R
-import kotlinx.android.synthetic.main.item_recycler_sub_setting.view.*
+import com.v2ray.ang.databinding.ItemRecyclerSubSettingBinding

-class SubSettingRecyclerAdapter(val activity: SubSettingActivity) : RecyclerView.Adapter<SubSettingRecyclerAdapter.BaseViewHolder>() {
+class SubSettingRecyclerAdapter(val activity: SubSettingActivity) : RecyclerView.Adapter<SubSettingRecyclerAdapter.MainViewHolder>() {

    private var mActivity: SubSettingActivity = activity

    override fun getItemCount() = mActivity.subscriptions.size

-    override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
-        if (holder is MainViewHolder) {
-            val subId = mActivity.subscriptions[position].first
-            val subItem = mActivity.subscriptions[position].second
-            holder.name.text = subItem.remarks
-            holder.url.text = subItem.url
-            holder.itemView.setBackgroundColor(Color.TRANSPARENT)
+    override fun onBindViewHolder(holder: MainViewHolder, position: Int) {
+        val subId = mActivity.subscriptions[position].first
+        val subItem = mActivity.subscriptions[position].second
+        holder.itemSubSettingBinding.tvName.text = subItem.remarks
+        holder.itemSubSettingBinding.tvUrl.text = subItem.url
+        holder.itemView.setBackgroundColor(Color.TRANSPARENT)

-            holder.layout_edit.setOnClickListener {
-                mActivity.startActivity(Intent(mActivity, SubEditActivity::class.java)
-                        .putExtra("subId", subId)
-                )
-            }
+        holder.itemSubSettingBinding.layoutEdit.setOnClickListener {
+            mActivity.startActivity(Intent(mActivity, SubEditActivity::class.java)
+                    .putExtra("subId", subId)
+            )
        }
    }

-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder {
-        return MainViewHolder(LayoutInflater.from(parent.context)
-                .inflate(R.layout.item_recycler_sub_setting, parent, false))
-    }
-
-    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
-
-    class MainViewHolder(itemView: View) : BaseViewHolder(itemView) {
-        val name = itemView.tv_name!!
-        val url = itemView.tv_url!!
-        val layout_edit = itemView.layout_edit!!
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MainViewHolder {
+        return MainViewHolder(ItemRecyclerSubSettingBinding.inflate(LayoutInflater.from(parent.context), parent, false))
    }

+    class MainViewHolder(val itemSubSettingBinding: ItemRecyclerSubSettingBinding) : RecyclerView.ViewHolder(itemSubSettingBinding.root)
 }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/TaskerActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/TaskerActivity.kt
@@ -14,10 +14,12 @@ import android.view.MenuItem
 import com.google.zxing.WriterException
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.databinding.ActivityTaskerBinding
 import com.v2ray.ang.util.MmkvManager
-import kotlinx.android.synthetic.main.activity_tasker.*

 class TaskerActivity : BaseActivity() {
+    private lateinit var binding: ActivityTaskerBinding
+
    private var listview: ListView? = null
    private var lstData: ArrayList<String> = ArrayList()
    private var lstGuid: ArrayList<String> = ArrayList()
@@ -26,7 +28,9 @@ class TaskerActivity : BaseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_tasker)
+        binding = ActivityTaskerBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)

        //add def value
        lstData.add("Default")
@@ -55,7 +59,7 @@ class TaskerActivity : BaseActivity() {
            if (switch == null || TextUtils.isEmpty(guid)) {
                return
            } else {
-                switch_start_service.isChecked = switch
+                binding.switchStartService.isChecked = switch
                val pos = lstGuid.indexOf(guid.toString())
                if (pos >= 0) {
                    listview?.setItemChecked(pos, true)
@@ -74,12 +78,12 @@ class TaskerActivity : BaseActivity() {
        }

        val extraBundle = Bundle()
-        extraBundle.putBoolean(AppConfig.TASKER_EXTRA_BUNDLE_SWITCH, switch_start_service.isChecked)
+        extraBundle.putBoolean(AppConfig.TASKER_EXTRA_BUNDLE_SWITCH, binding.switchStartService.isChecked)
        extraBundle.putString(AppConfig.TASKER_EXTRA_BUNDLE_GUID, lstGuid[position])
        val intent = Intent()

        val remarks = lstData[position]
-        val blurb = if (switch_start_service.isChecked) {
+        val blurb = if (binding.switchStartService.isChecked) {
            "Start $remarks"
        } else {
            "Stop $remarks"
@@ -91,9 +95,9 @@ class TaskerActivity : BaseActivity() {
        finish()
    }

-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.action_server, menu)
-        val del_config = menu?.findItem(R.id.del_config)
+        val del_config = menu.findItem(R.id.del_config)
        del_config?.isVisible = false
        return super.onCreateOptionsMenu(menu)
    }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/AngConfigManager.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/AngConfigManager.kt
@@ -3,7 +3,7 @@ package com.v2ray.ang.util
 import android.content.Context
 import android.content.SharedPreferences
 import android.graphics.Bitmap
-import android.support.v7.preference.PreferenceManager
+import androidx.preference.PreferenceManager
 import android.text.TextUtils
 import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
@@ -17,11 +17,11 @@ import com.v2ray.ang.dto.V2rayConfig.Companion.DEFAULT_SECURITY
 import com.v2ray.ang.dto.V2rayConfig.Companion.TLS
 import com.v2ray.ang.util.MmkvManager.KEY_SELECTED_SERVER
 import java.net.URI
-import java.net.URLDecoder
 import java.util.*

 object AngConfigManager {
    private val mainStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_MAIN, MMKV.MULTI_PROCESS_MODE) }
+    private val serverRawStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SERVER_RAW, MMKV.MULTI_PROCESS_MODE) }
    private val settingsStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SETTING, MMKV.MULTI_PROCESS_MODE) }
    private val subStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SUB, MMKV.MULTI_PROCESS_MODE) }

@@ -68,7 +68,6 @@ object AngConfigManager {
            settingsStorage?.encode(key, sharedPreferences.getString(key, null))
        }
        listOf(AppConfig.PREF_SPEED_ENABLED,
-                AppConfig.PREF_SNIFFING_ENABLED,
                AppConfig.PREF_PROXY_SHARING,
                AppConfig.PREF_LOCAL_DNS_ENABLED,
 //                AppConfig.PREF_ALLOW_INSECURE,
@@ -77,6 +76,7 @@ object AngConfigManager {
                AppConfig.PREF_BYPASS_APPS,).forEach { key ->
            settingsStorage?.encode(key, sharedPreferences.getBoolean(key, false))
        }
+        settingsStorage?.encode(AppConfig.PREF_SNIFFING_ENABLED, sharedPreferences.getBoolean(AppConfig.PREF_SNIFFING_ENABLED, true))
        settingsStorage?.encode(AppConfig.PREF_PER_APP_PROXY_SET, sharedPreferences.getStringSet(AppConfig.PREF_PER_APP_PROXY_SET, setOf()))
    }

@@ -95,13 +95,13 @@ object AngConfigManager {
                    return@forEachIndexed
                }
                config.fullConfig = v2rayConfig
+                serverRawStorage?.encode(vmessBean.guid, jsonConfig)
            } else {
                config.outboundBean?.settings?.vnext?.get(0)?.let { vnext ->
                    vnext.address = vmessBean.address
                    vnext.port = vmessBean.port
                    vnext.users[0].id = vmessBean.id
                    if (config.configType == EConfigType.VMESS) {
-                        vnext.users[0].alterId = vmessBean.alterId
                        vnext.users[0].security = vmessBean.security
                    } else if (config.configType == EConfigType.VLESS) {
                        vnext.users[0].encryption = vmessBean.security
@@ -129,14 +129,15 @@ object AngConfigManager {
                }
                config.outboundBean?.streamSettings?.let { streamSetting ->
                    val sni = streamSetting.populateTransportSettings(vmessBean.network, vmessBean.headerType,
-                            vmessBean.requestHost, vmessBean.path, vmessBean.path, vmessBean.requestHost, vmessBean.path)
+                            vmessBean.requestHost, vmessBean.path, vmessBean.path, vmessBean.requestHost, vmessBean.path,
+                            vmessBean.headerType, vmessBean.path)
 //                    val allowInsecure = if (vmessBean.allowInsecure.isBlank()) {
 //                        settingsStorage?.decodeBool(AppConfig.PREF_ALLOW_INSECURE) ?: false
 //                    } else {
 //                        vmessBean.allowInsecure.toBoolean()
 //                    }
                    streamSetting.populateTlsSettings(vmessBean.streamSecurity, false,
-                            sni)//if (vmessBean.sni.isNotBlank()) vmessBean.sni else sni)
+                            sni)//vmessBean.sni.ifBlank { sni })
                }
            }
            val key = MmkvManager.encodeServerConfig(vmessBean.guid, config)
@@ -166,7 +167,7 @@ object AngConfigManager {
            }

            //maybe sub
-            if (str.startsWith(HTTP_PROTOCOL) || str.startsWith(HTTPS_PROTOCOL)) {
+            if (TextUtils.isEmpty(subid) && (str.startsWith(HTTP_PROTOCOL) || str.startsWith(HTTPS_PROTOCOL))) {
                MmkvManager.importUrlAsSubscription(str)
                return 0
            }
@@ -189,10 +190,10 @@ object AngConfigManager {
                            return R.string.toast_decoding_failed
                        }
                        val vmessQRCode = Gson().fromJson(result, VmessQRCode::class.java)
+                        // Although VmessQRCode fields are non null, looks like Gson may still create null fields
                        if (TextUtils.isEmpty(vmessQRCode.add)
                                || TextUtils.isEmpty(vmessQRCode.port)
                                || TextUtils.isEmpty(vmessQRCode.id)
-                                || TextUtils.isEmpty(vmessQRCode.aid)
                                || TextUtils.isEmpty(vmessQRCode.net)
                        ) {
                            return R.string.toast_incorrect_protocol
@@ -204,12 +205,11 @@ object AngConfigManager {
                            vnext.port = Utils.parseInt(vmessQRCode.port)
                            vnext.users[0].id = vmessQRCode.id
                            vnext.users[0].encryption = DEFAULT_SECURITY
-                            vnext.users[0].alterId = Utils.parseInt(vmessQRCode.aid)
                        }
                        val sni = streamSetting.populateTransportSettings(vmessQRCode.net, vmessQRCode.type, vmessQRCode.host,
-                                vmessQRCode.path, vmessQRCode.path, vmessQRCode.host, vmessQRCode.path)
+                                vmessQRCode.path, vmessQRCode.path, vmessQRCode.host, vmessQRCode.path, vmessQRCode.type, vmessQRCode.path)
                        streamSetting.populateTlsSettings(vmessQRCode.tls, allowInsecure,
-                                if (vmessQRCode.sni.isNotBlank()) vmessQRCode.sni else sni)
+                                if (TextUtils.isEmpty(vmessQRCode.sni)) sni else vmessQRCode.sni)
                    }
                }
            } else if (str.startsWith(EConfigType.SHADOWSOCKS.protocolScheme)) {
@@ -241,7 +241,7 @@ object AngConfigManager {
                    server.address = match.groupValues[3].removeSurrounding("[", "]")
                    server.port = match.groupValues[4].toInt()
                    server.password = match.groupValues[2]
-                    server.method = match.groupValues[1].toLowerCase()
+                    server.method = match.groupValues[1].lowercase()
                }
            } else if (str.startsWith(EConfigType.SOCKS.protocolScheme)) {
                var result = str.replace(EConfigType.SOCKS.protocolScheme, "")
@@ -272,7 +272,7 @@ object AngConfigManager {
                    server.address = match.groupValues[3].removeSurrounding("[", "]")
                    server.port = match.groupValues[4].toInt()
                    val socksUsersBean = V2rayConfig.OutboundBean.OutSettingsBean.ServersBean.SocksUsersBean()
-                    socksUsersBean.user = match.groupValues[1].toLowerCase()
+                    socksUsersBean.user = match.groupValues[1].lowercase()
                    socksUsersBean.pass = match.groupValues[2]
                    server.users = listOf(socksUsersBean)
                }
@@ -288,16 +288,14 @@ object AngConfigManager {
                var sni = ""
                uri.rawQuery?.let { rawQuery ->
                    val queryParam = rawQuery.split("&")
-                            .map { it.split("=").let { (k, v) -> k to URLDecoder.decode(v, "utf-8")!! } }
-                            .toMap()
+                        .associate { it.split("=").let { (k, v) -> k to Utils.urlDecode(v) } }
                    sni = queryParam["sni"] ?: ""
                }
                config.outboundBean?.streamSettings?.populateTlsSettings(TLS, allowInsecure, sni)
            } else if (str.startsWith(EConfigType.VLESS.protocolScheme)) {
                val uri = URI(str)
                val queryParam = uri.rawQuery.split("&")
-                        .map { it.split("=").let { (k, v) -> k to URLDecoder.decode(v, "utf-8")!! } }
-                        .toMap()
+                    .associate { it.split("=").let { (k, v) -> k to Utils.urlDecode(v) } }
                config = ServerConfig.create(EConfigType.VLESS)
                val streamSetting = config.outboundBean?.streamSettings ?: return -1
                config.remarks = uri.fragment ?: ""
@@ -310,7 +308,8 @@ object AngConfigManager {
                }

                val sni = streamSetting.populateTransportSettings(queryParam["type"] ?: "tcp", queryParam["headerType"],
-                        queryParam["host"], queryParam["path"], queryParam["seed"], queryParam["quicSecurity"], queryParam["key"])
+                        queryParam["host"], queryParam["path"], queryParam["seed"], queryParam["quicSecurity"], queryParam["key"],
+                        queryParam["mode"], queryParam["serviceName"])
                streamSetting.populateTlsSettings(queryParam["security"] ?: "", allowInsecure, queryParam["sni"] ?: sni)
            }
            if (config == null){
@@ -334,14 +333,13 @@ object AngConfigManager {
        return runCatching {
            val uri = URI(uriString)
            check(uri.scheme == "vmess")
-            val (_, protocol, tlsStr, uuid, alterId) =
-                    Regex("(tcp|http|ws|kcp|quic)(\\+tls)?:([0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12})-([0-9]+)")
+            val (_, protocol, tlsStr, uuid) =
+                    Regex("(tcp|http|ws|kcp|quic|grpc)(\\+tls)?:([0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12})")
                            .matchEntire(uri.userInfo)?.groupValues
                            ?: error("parse user info fail.")
            val tls = tlsStr.isNotBlank()
            val queryParam = uri.rawQuery.split("&")
-                    .map { it.split("=").let { (k, v) -> k to URLDecoder.decode(v, "utf-8")!! } }
-                    .toMap()
+                .associate { it.split("=").let { (k, v) -> k to Utils.urlDecode(v) } }

            val streamSetting = config.outboundBean?.streamSettings ?: return false
            config.remarks = uri.fragment
@@ -350,13 +348,12 @@ object AngConfigManager {
                vnext.port = uri.port
                vnext.users[0].id = uuid
                vnext.users[0].encryption = DEFAULT_SECURITY
-                vnext.users[0].alterId = alterId.toInt()
            }

            val sni = streamSetting.populateTransportSettings(protocol, queryParam["type"],
                    queryParam["host"]?.split("|")?.get(0) ?: "",
-                    queryParam["path"]?.takeIf { it.trim() != "/" } ?: "",
-                    queryParam["seed"], queryParam["security"], queryParam["key"])
+                    queryParam["path"]?.takeIf { it.trim() != "/" } ?: "", queryParam["seed"], queryParam["security"],
+                    queryParam["key"], queryParam["mode"], queryParam["serviceName"])
            streamSetting.populateTlsSettings(if (tls) TLS else "", allowInsecure, sni)
            true
        }.getOrElse { false }
@@ -387,7 +384,6 @@ object AngConfigManager {
            vnext.port = Utils.parseInt(arr22[1])
            vnext.users[0].id = arr21[1]
            vnext.users[0].encryption = arr21[0]
-            vnext.users[0].alterId = 0
        }
        return true
    }
@@ -408,7 +404,6 @@ object AngConfigManager {
                    vmessQRCode.add = outbound.getServerAddress().orEmpty()
                    vmessQRCode.port = outbound.getServerPort().toString()
                    vmessQRCode.id = outbound.getPassword().orEmpty()
-                    vmessQRCode.aid = outbound.settings?.vnext?.get(0)?.users?.get(0)?.alterId.toString()
                    vmessQRCode.net = streamSetting.network
                    vmessQRCode.tls = streamSetting.security
                    vmessQRCode.sni = streamSetting.tlsSettings?.serverName.orEmpty()
@@ -450,28 +445,24 @@ object AngConfigManager {
                    }
                    dicQuery["encryption"] = if (outbound.getSecurityEncryption().isNullOrEmpty()) "none"
                    else outbound.getSecurityEncryption().orEmpty()
-                    dicQuery["security"] = if (streamSetting.security.isEmpty()) "none"
-                    else streamSetting.security
+                    dicQuery["security"] = streamSetting.security.ifEmpty { "none" }
                    (streamSetting.tlsSettings?: streamSetting.xtlsSettings)?.let { tlsSetting ->
                        if (!TextUtils.isEmpty(tlsSetting.serverName)) {
                            dicQuery["sni"] = tlsSetting.serverName
                        }
                    }
-                    dicQuery["type"] = if (streamSetting.network.isEmpty()) V2rayConfig.DEFAULT_NETWORK
-                    else streamSetting.network
+                    dicQuery["type"] = streamSetting.network.ifEmpty { V2rayConfig.DEFAULT_NETWORK }

                    outbound.getTransportSettingDetails()?.let { transportDetails ->
                        when (streamSetting.network) {
                            "tcp" -> {
-                                dicQuery["headerType"] = if (transportDetails[0].isEmpty()) "none"
-                                else transportDetails[0]
+                                dicQuery["headerType"] = transportDetails[0].ifEmpty { "none" }
                                if (!TextUtils.isEmpty(transportDetails[1])) {
                                    dicQuery["host"] = Utils.urlEncode(transportDetails[1])
                                }
                            }
                            "kcp" -> {
-                                dicQuery["headerType"] = if (transportDetails[0].isEmpty()) "none"
-                                else transportDetails[0]
+                                dicQuery["headerType"] = transportDetails[0].ifEmpty { "none" }
                                if (!TextUtils.isEmpty(transportDetails[2])) {
                                    dicQuery["seed"] = Utils.urlEncode(transportDetails[2])
                                }
@@ -494,11 +485,14 @@ object AngConfigManager {
                                }
                            }
                            "quic" -> {
-                                dicQuery["headerType"] = if (transportDetails[0].isEmpty()) "none"
-                                else transportDetails[0]
+                                dicQuery["headerType"] = transportDetails[0].ifEmpty { "none" }
                                dicQuery["quicSecurity"] = Utils.urlEncode(transportDetails[1])
                                dicQuery["key"] = Utils.urlEncode(transportDetails[2])
                            }
+                            "grpc" -> {
+                                dicQuery["mode"] = transportDetails[0]
+                                dicQuery["serviceName"] = transportDetails[2]
+                            }
                        }
                    }
                    val query = "?" + dicQuery.toList().joinToString(
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/MmkvManager.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/MmkvManager.kt
@@ -9,6 +9,7 @@ import com.v2ray.ang.dto.SubscriptionItem
 object MmkvManager {
    const val ID_MAIN = "MAIN"
    const val ID_SERVER_CONFIG = "SERVER_CONFIG"
+    const val ID_SERVER_RAW = "SERVER_RAW"
    const val ID_SERVER_AFF = "SERVER_AFF"
    const val ID_SUB = "SUB"
    const val ID_SETTING = "SETTING"
@@ -41,11 +42,7 @@ object MmkvManager {
    }

    fun encodeServerConfig(guid: String, config: ServerConfig): String {
-        val key = if (guid.isBlank()) {
-            Utils.getUuid()
-        } else {
-            guid
-        }
+        val key = guid.ifBlank { Utils.getUuid() }
        serverStorage?.encode(key, Gson().toJson(config))
        val serverList= decodeServerList()
        if (!serverList.contains(key)) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
@@ -15,12 +15,12 @@ import android.content.ClipData
 import android.content.Intent
 import android.net.Uri
 import android.os.SystemClock
-import android.text.TextUtils
 import android.util.Log
 import android.util.Patterns
 import android.webkit.URLUtil
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.BuildConfig
 import com.v2ray.ang.R
 import com.v2ray.ang.extension.responseLength
 import com.v2ray.ang.extension.toast
@@ -62,11 +62,11 @@ object Utils {
     * parseInt
     */
    fun parseInt(str: String): Int {
-        try {
-            return Integer.parseInt(str)
+        return try {
+            Integer.parseInt(str)
        } catch (e: Exception) {
            e.printStackTrace()
-            return 0
+            0
        }
    }

@@ -74,12 +74,12 @@ object Utils {
     * get text from clipboard
     */
    fun getClipboard(context: Context): String {
-        try {
+        return try {
            val cmb = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
-            return cmb.primaryClip?.getItemAt(0)?.text.toString()
+            cmb.primaryClip?.getItemAt(0)?.text.toString()
        } catch (e: Exception) {
            e.printStackTrace()
-            return ""
+            ""
        }
    }

@@ -100,64 +100,68 @@ object Utils {
     * base64 decode
     */
    fun decode(text: String): String {
+        tryDecodeBase64(text)?.let { return it }
+        if (text.endsWith('=')) {
+            // try again for some loosely formatted base64
+            tryDecodeBase64(text.trimEnd('='))?.let { return it }
+        }
+        return ""
+    }
+
+    fun tryDecodeBase64(text: String): String? {
        try {
            return Base64.decode(text, Base64.NO_WRAP).toString(charset("UTF-8"))
        } catch (e: Exception) {
-            e.printStackTrace()
-            return ""
+            Log.i(AppConfig.ANG_PACKAGE, "Parse base64 standard failed $e")
        }
+        try {
+            return Base64.decode(text, Base64.NO_WRAP.or(Base64.URL_SAFE)).toString(charset("UTF-8"))
+        } catch (e: Exception) {
+            Log.i(AppConfig.ANG_PACKAGE, "Parse base64 url safe failed $e")
+        }
+        return null
    }

    /**
     * base64 encode
     */
    fun encode(text: String): String {
-        try {
-            return Base64.encodeToString(text.toByteArray(charset("UTF-8")), Base64.NO_WRAP)
+        return try {
+            Base64.encodeToString(text.toByteArray(charset("UTF-8")), Base64.NO_WRAP)
        } catch (e: Exception) {
            e.printStackTrace()
-            return ""
+            ""
        }
    }

    /**
     * get remote dns servers from preference
     */
-    fun getRemoteDnsServers(): ArrayList<String> {
+    fun getRemoteDnsServers(): List<String> {
        val remoteDns = settingsStorage?.decodeString(AppConfig.PREF_REMOTE_DNS) ?: AppConfig.DNS_AGENT
-        val ret = ArrayList<String>()
-        if (!TextUtils.isEmpty(remoteDns)) {
-            remoteDns
-                    .split(",")
-                    .forEach {
-                        if (Utils.isPureIpAddress(it)) {
-                            ret.add(it)
-                        }
-                    }
-        }
-        if (ret.size == 0) {
-            ret.add(AppConfig.DNS_AGENT)
+        val ret = remoteDns.split(",").filter { isPureIpAddress(it) || isCoreDNSAddress(it) }
+        if (ret.isEmpty()) {
+            return listOf(AppConfig.DNS_AGENT)
        }
        return ret
    }

+    fun getVpnDnsServers(): List<String> {
+        val vpnDns = settingsStorage?.decodeString(AppConfig.PREF_VPN_DNS)
+                ?: settingsStorage?.decodeString(AppConfig.PREF_REMOTE_DNS)
+                ?: AppConfig.DNS_AGENT
+        return vpnDns.split(",").filter { isPureIpAddress(it) }
+        // allow empty, in that case dns will use system default
+    }
+
    /**
     * get remote dns servers from preference
     */
-    fun getDomesticDnsServers(): ArrayList<String> {
+    fun getDomesticDnsServers(): List<String> {
        val domesticDns = settingsStorage?.decodeString(AppConfig.PREF_DOMESTIC_DNS) ?: AppConfig.DNS_DIRECT
-        val ret = ArrayList<String>()
-        if (!TextUtils.isEmpty(domesticDns)) {
-            domesticDns
-                    .split(",")
-                    .forEach {
-                        if (Utils.isPureIpAddress(it)) {
-                            ret.add(it)
-                        }
-                    }
-        }
-        if (ret.size == 0) {
-            ret.add(AppConfig.DNS_DIRECT)
+        val ret = domesticDns.split(",").filter { isPureIpAddress(it) || isCoreDNSAddress(it) }
+        if (ret.isEmpty()) {
+            return listOf(AppConfig.DNS_DIRECT)
        }
        return ret
    }
@@ -168,12 +172,12 @@ object Utils {
    fun createQRCode(text: String, size: Int = 800): Bitmap? {
        try {
            val hints = HashMap<EncodeHintType, String>()
-            hints.put(EncodeHintType.CHARACTER_SET, "utf-8")
+            hints[EncodeHintType.CHARACTER_SET] = "utf-8"
            val bitMatrix = QRCodeWriter().encode(text,
                    BarcodeFormat.QR_CODE, size, size, hints)
            val pixels = IntArray(size * size)
-            for (y in 0..size - 1) {
-                for (x in 0..size - 1) {
+            for (y in 0 until size) {
+                for (x in 0 until size) {
                    if (bitMatrix.get(x, y)) {
                        pixels[y * size + x] = 0xff000000.toInt()
                    } else {
@@ -218,7 +222,7 @@ object Utils {
            }

            // addr = addr.toLowerCase()
-            var octets = addr.split('.').toTypedArray()
+            val octets = addr.split('.').toTypedArray()
            if (octets.size == 4) {
                if(octets[3].indexOf(":") > 0) {
                    addr = addr.substring(0, addr.indexOf(":"))
@@ -253,6 +257,10 @@ object Utils {
        return regV6.matches(addr)
    }

+    private fun isCoreDNSAddress(s: String): Boolean {
+        return s.startsWith("https") || s.startsWith("tcp") || s.startsWith("quic")
+    }
+
    /**
     * is valid url
     */
@@ -294,29 +302,29 @@ object Utils {
     * uuid
     */
    fun getUuid(): String {
-        try {
-            return UUID.randomUUID().toString().replace("-", "")
+        return try {
+            UUID.randomUUID().toString().replace("-", "")
        } catch (e: Exception) {
            e.printStackTrace()
-            return ""
+            ""
        }
    }

    fun urlDecode(url: String): String {
-        try {
-            return URLDecoder.decode(url, "UTF-8")
+        return try {
+            URLDecoder.decode(url, "UTF-8")
        } catch (e: Exception) {
            e.printStackTrace()
-            return url
+            url
        }
    }

    fun urlEncode(url: String): String {
-        try {
-            return URLEncoder.encode(url, "UTF-8")
+        return try {
+            URLEncoder.encode(url, "UTF-8")
        } catch (e: Exception) {
            e.printStackTrace()
-            return url
+            url
        }
    }

@@ -391,9 +399,9 @@ object Utils {
            val command = "/system/bin/ping -c 3 $url"
            val process = Runtime.getRuntime().exec(command)
            val allText = process.inputStream.bufferedReader().use { it.readText() }
-            if (!TextUtils.isEmpty(allText)) {
+            if (allText.isNotBlank()) {
                val tempInfo = allText.substring(allText.indexOf("min/avg/max/mdev") + 19)
-                val temps = tempInfo.split("/".toRegex()).dropLastWhile({ it.isEmpty() }).toTypedArray()
+                val temps = tempInfo.split("/".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
                if (temps.count() > 0 && temps[0].length < 10) {
                    return temps[0].toFloat().toInt().toString() + "ms"
                }
@@ -453,5 +461,21 @@ object Utils {
            tcpTestingSockets.clear()
        }
    }
+
+    @Throws(IOException::class)
+    fun getUrlContentWithCustomUserAgent(urlStr: String?): String {
+        val url = URL(urlStr)
+        val conn = url.openConnection()
+        conn.setRequestProperty("Connection", "close")
+        conn.setRequestProperty("User-agent", "v2rayNG/${BuildConfig.VERSION_NAME}")
+        url.userInfo?.let {
+            conn.setRequestProperty("Authorization",
+                "Basic ${encode(urlDecode(it))}")
+        }
+        conn.useCaches = false
+        return conn.inputStream.use {
+            it.bufferedReader().readText()
+        }
+    }
 }

--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/V2rayConfigUtil.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/V2rayConfigUtil.kt
@@ -6,19 +6,14 @@ import android.util.Log
 import com.google.gson.*
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.AppConfig.ANG_PACKAGE
 import com.v2ray.ang.dto.V2rayConfig
-import org.json.JSONException
-import org.json.JSONObject
 import com.v2ray.ang.dto.EConfigType
+import com.v2ray.ang.dto.V2rayConfig.Companion.DEFAULT_NETWORK
+import com.v2ray.ang.dto.V2rayConfig.Companion.HTTP

 object V2rayConfigUtil {
-//    private val requestObj: JsonObject by lazy {
-//        Gson().fromJson("""{"version":"1.1","method":"GET","path":["/"],"headers":{"User-Agent":["Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.75 Safari/537.36","Mozilla/5.0 (iPhone; CPU iPhone OS 10_0_2 like Mac OS X) AppleWebKit/601.1 (KHTML, like Gecko) CriOS/53.0.2785.109 Mobile/14A456 Safari/601.1.46"],"Accept-Encoding":["gzip, deflate"],"Connection":["keep-alive"],"Pragma":"no-cache"}}""", JsonObject::class.java)
-//    }
-//    private val responseObj: JSONObject by lazy {
-//        JSONObject("""{"version":"1.1","status":"200","reason":"OK","headers":{"Content-Type":["application/octet-stream","video/mpeg"],"Transfer-Encoding":["chunked"],"Connection":["keep-alive"],"Pragma":"no-cache"}}""")
-//    }
-
+    private val serverRawStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SERVER_RAW, MMKV.MULTI_PROCESS_MODE) }
    private val settingsStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SETTING, MMKV.MULTI_PROCESS_MODE) }

    data class Result(var status: Boolean, var content: String)
@@ -30,13 +25,18 @@ object V2rayConfigUtil {
        try {
            val config = MmkvManager.decodeServerConfig(guid) ?: return Result(false, "")
            if (config.configType == EConfigType.CUSTOM) {
-                val customConfig = config.fullConfig?.toPrettyPrinting() ?: return Result(false, "")
-                Log.d("V2rayConfigUtilGoLog", customConfig)
+                val raw = serverRawStorage?.decodeString(guid)
+                val customConfig = if (raw.isNullOrBlank()) {
+                    config.fullConfig?.toPrettyPrinting() ?: return Result(false, "")
+                } else {
+                    raw
+                }
+                Log.d(ANG_PACKAGE, customConfig)
                return Result(true, customConfig)
            }
            val outbound = config.getProxyOutbound() ?: return Result(false, "")
            val result = getV2rayNonCustomConfig(context, outbound)
-            Log.d("V2rayConfigUtilGoLog", result.content)
+            Log.d(ANG_PACKAGE, result.content)
            return result
        } catch (e: Exception) {
            e.printStackTrace()
@@ -62,14 +62,18 @@ object V2rayConfigUtil {

        inbounds(v2rayConfig)

+        httpRequestObject(outbound)
+
        v2rayConfig.outbounds[0] = outbound

        routing(v2rayConfig)

+        fakedns(v2rayConfig)
+
+        dns(v2rayConfig)
+
        if (settingsStorage?.decodeBool(AppConfig.PREF_LOCAL_DNS_ENABLED) == true) {
            customLocalDns(v2rayConfig)
-        } else {
-            customRemoteDns(v2rayConfig)
        }
        if (settingsStorage?.decodeBool(AppConfig.PREF_SPEED_ENABLED) != true) {
            v2rayConfig.stats = null
@@ -89,13 +93,23 @@ object V2rayConfigUtil {
            //val httpPort = Utils.parseInt(settingsStorage?.decodeString(AppConfig.PREF_HTTP_PORT) ?: AppConfig.PORT_HTTP)

            v2rayConfig.inbounds.forEach { curInbound ->
-                if (!(settingsStorage?.decodeBool(AppConfig.PREF_PROXY_SHARING) ?: false)) {
+                if (settingsStorage?.decodeBool(AppConfig.PREF_PROXY_SHARING) != true) {
                    //bind all inbounds to localhost if the user requests
                    curInbound.listen = "127.0.0.1"
                }
            }
            v2rayConfig.inbounds[0].port = 10808
-            v2rayConfig.inbounds[0].sniffing?.enabled = settingsStorage?.decodeBool(AppConfig.PREF_SNIFFING_ENABLED) ?: true
+            val fakedns = settingsStorage?.decodeBool(AppConfig.PREF_FAKE_DNS_ENABLED)
+                    ?: false
+            val sniffAllTlsAndHttp = settingsStorage?.decodeBool(AppConfig.PREF_SNIFFING_ENABLED, true)
+                    ?: true
+            v2rayConfig.inbounds[0].sniffing?.enabled = fakedns || sniffAllTlsAndHttp
+            if (!sniffAllTlsAndHttp) {
+                v2rayConfig.inbounds[0].sniffing?.destOverride?.clear()
+            }
+            if (fakedns) {
+                v2rayConfig.inbounds[0].sniffing?.destOverride?.add("fakedns")
+            }

            //v2rayConfig.inbounds[1].port = httpPort

@@ -112,16 +126,29 @@ object V2rayConfigUtil {
        return true
    }

+    private fun fakedns(v2rayConfig: V2rayConfig) {
+        if (settingsStorage?.decodeBool(AppConfig.PREF_FAKE_DNS_ENABLED) == true) {
+            v2rayConfig.fakedns = listOf(V2rayConfig.FakednsBean())
+            v2rayConfig.outbounds.filter { it.protocol == "freedom" }.forEach {
+                it.settings?.domainStrategy = "UseIP"
+            }
+        }
+    }
+
    /**
     * routing
     */
    private fun routing(v2rayConfig: V2rayConfig): Boolean {
        try {
-            routingUserRule(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_AGENT) ?: "", AppConfig.TAG_AGENT, v2rayConfig)
-            routingUserRule(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_DIRECT) ?: "", AppConfig.TAG_DIRECT, v2rayConfig)
-            routingUserRule(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_BLOCKED) ?: "", AppConfig.TAG_BLOCKED, v2rayConfig)
+            routingUserRule(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_AGENT)
+                    ?: "", AppConfig.TAG_AGENT, v2rayConfig)
+            routingUserRule(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_DIRECT)
+                    ?: "", AppConfig.TAG_DIRECT, v2rayConfig)
+            routingUserRule(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_BLOCKED)
+                    ?: "", AppConfig.TAG_BLOCKED, v2rayConfig)

-            v2rayConfig.routing.domainStrategy = settingsStorage?.decodeString(AppConfig.PREF_ROUTING_DOMAIN_STRATEGY) ?: "IPIfNonMatch"
+            v2rayConfig.routing.domainStrategy = settingsStorage?.decodeString(AppConfig.PREF_ROUTING_DOMAIN_STRATEGY)
+                    ?: "IPIfNonMatch"
            val routingMode = settingsStorage?.decodeString(AppConfig.PREF_ROUTING_MODE) ?: "0"

            // Hardcode googleapis.cn
@@ -160,7 +187,7 @@ object V2rayConfigUtil {
                    val rulesIP = V2rayConfig.RoutingBean.RulesBean()
                    rulesIP.type = "field"
                    rulesIP.outboundTag = tag
-                    rulesIP.ip = ArrayList<String>()
+                    rulesIP.ip = ArrayList()
                    rulesIP.ip?.add("geoip:$code")
                    v2rayConfig.routing.rules.add(rulesIP)
                }
@@ -170,7 +197,7 @@ object V2rayConfigUtil {
                    val rulesDomain = V2rayConfig.RoutingBean.RulesBean()
                    rulesDomain.type = "field"
                    rulesDomain.outboundTag = tag
-                    rulesDomain.domain = ArrayList<String>()
+                    rulesDomain.domain = ArrayList()
                    rulesDomain.domain?.add("geosite:$code")
                    v2rayConfig.routing.rules.add(rulesDomain)
                }
@@ -187,13 +214,13 @@ object V2rayConfigUtil {
                val rulesDomain = V2rayConfig.RoutingBean.RulesBean()
                rulesDomain.type = "field"
                rulesDomain.outboundTag = tag
-                rulesDomain.domain = ArrayList<String>()
+                rulesDomain.domain = ArrayList()

                //IP
                val rulesIP = V2rayConfig.RoutingBean.RulesBean()
                rulesIP.type = "field"
                rulesIP.outboundTag = tag
-                rulesIP.ip = ArrayList<String>()
+                rulesIP.ip = ArrayList()

                userRule.split(",").map { it.trim() }.forEach {
                    if (Utils.isIpAddress(it) || it.startsWith("geoip:")) {
@@ -235,50 +262,22 @@ object V2rayConfigUtil {
     */
    private fun customLocalDns(v2rayConfig: V2rayConfig): Boolean {
        try {
-            val hosts = mutableMapOf<String, String>()
-            val servers = ArrayList<Any>()
-            val remoteDns = Utils.getRemoteDnsServers()
-
-            remoteDns.forEach {
-                servers.add(it)
+            if (settingsStorage?.decodeBool(AppConfig.PREF_FAKE_DNS_ENABLED) == true) {
+                val geositeCn = arrayListOf("geosite:cn")
+                val proxyDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_AGENT)
+                        ?: "")
+                val directDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_DIRECT)
+                        ?: "")
+                // fakedns with all domains to make it always top priority
+                v2rayConfig.dns.servers?.add(0,
+                        V2rayConfig.DnsBean.ServersBean(address = "fakedns", domains = geositeCn.plus(proxyDomain).plus(directDomain)))
            }

-            val domesticDns = Utils.getDomesticDnsServers()
-            val geositeCn = arrayListOf("geosite:cn")
-            val geoipCn = arrayListOf("geoip:cn")
-
-            val agDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_AGENT) ?: "")
-            if (agDomain.size > 0) {
-                servers.add(V2rayConfig.DnsBean.ServersBean(remoteDns.first(), 53, agDomain, null))
-            }
-
-            val dirDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_DIRECT) ?: "")
-            if (dirDomain.size > 0) {
-                servers.add(V2rayConfig.DnsBean.ServersBean(domesticDns.first(), 53, dirDomain, geoipCn))
-            }
-
-            val routingMode = settingsStorage?.decodeString(AppConfig.PREF_ROUTING_MODE) ?: "0"
-            if (routingMode == "2" || routingMode == "3") {
-                servers.add(V2rayConfig.DnsBean.ServersBean(domesticDns.first(), 53, geositeCn, geoipCn))
-            }
-
-            val blkDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_BLOCKED) ?: "")
-            if (blkDomain.size > 0) {
-                hosts.putAll(blkDomain.map { it to "127.0.0.1" })
-            }
-
-            // hardcode googleapi rule to fix play store problems
-            hosts.put("domain:googleapis.cn", "googleapis.com")
-
-            // DNS dns对象
-            v2rayConfig.dns = V2rayConfig.DnsBean(
-                    servers = servers,
-                    hosts = hosts)
-
            // DNS inbound对象
+            val remoteDns = Utils.getRemoteDnsServers()
            if (v2rayConfig.inbounds.none { e -> e.protocol == "dokodemo-door" && e.tag == "dns-in" }) {
                val dnsInboundSettings = V2rayConfig.InboundBean.InSettingsBean(
-                        address = if (remoteDns.first().startsWith("https")) "1.1.1.1" else remoteDns.first(),
+                        address = if (Utils.isPureIpAddress(remoteDns.first())) remoteDns.first() else "1.1.1.1",
                        port = 53,
                        network = "tcp,udp")

@@ -304,17 +303,76 @@ object V2rayConfigUtil {
                                mux = null))
            }

-            // DNS routing
-            if (!domesticDns.first().startsWith("https")) {
-                v2rayConfig.routing.rules.add(0, V2rayConfig.RoutingBean.RulesBean(
-                        type = "field",
-                        outboundTag = AppConfig.TAG_DIRECT,
-                        port = "53",
-                        ip = arrayListOf(domesticDns.first()),
-                        domain = null)
-                )
+            // DNS routing tag
+            v2rayConfig.routing.rules.add(0, V2rayConfig.RoutingBean.RulesBean(
+                    type = "field",
+                    inboundTag = arrayListOf("dns-in"),
+                    outboundTag = "dns-out",
+                    domain = null)
+            )
+        } catch (e: Exception) {
+            e.printStackTrace()
+            return false
+        }
+        return true
+    }
+
+    private fun dns(v2rayConfig: V2rayConfig): Boolean {
+        try {
+            val hosts = mutableMapOf<String, String>()
+            val servers = ArrayList<Any>()
+            val remoteDns = Utils.getRemoteDnsServers()
+            val proxyDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_AGENT)
+                    ?: "")
+
+            remoteDns.forEach {
+                servers.add(it)
            }
-            if (!remoteDns.first().startsWith("https")) {
+            if (proxyDomain.size > 0) {
+                servers.add(V2rayConfig.DnsBean.ServersBean(remoteDns.first(), 53, proxyDomain, null))
+            }
+
+            // domestic DNS
+            val directDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_DIRECT)
+                    ?: "")
+            val routingMode = settingsStorage?.decodeString(AppConfig.PREF_ROUTING_MODE) ?: "0"
+            if (directDomain.size > 0 || routingMode == "2" || routingMode == "3") {
+                val domesticDns = Utils.getDomesticDnsServers()
+                val geositeCn = arrayListOf("geosite:cn")
+                val geoipCn = arrayListOf("geoip:cn")
+                if (directDomain.size > 0) {
+                    servers.add(V2rayConfig.DnsBean.ServersBean(domesticDns.first(), 53, directDomain, geoipCn))
+                }
+                if (routingMode == "2" || routingMode == "3") {
+                    servers.add(V2rayConfig.DnsBean.ServersBean(domesticDns.first(), 53, geositeCn, geoipCn))
+                }
+                if (Utils.isPureIpAddress(domesticDns.first())) {
+                    v2rayConfig.routing.rules.add(0, V2rayConfig.RoutingBean.RulesBean(
+                            type = "field",
+                            outboundTag = AppConfig.TAG_DIRECT,
+                            port = "53",
+                            ip = arrayListOf(domesticDns.first()),
+                            domain = null)
+                    )
+                }
+            }
+
+            val blkDomain = userRule2Domian(settingsStorage?.decodeString(AppConfig.PREF_V2RAY_ROUTING_BLOCKED)
+                    ?: "")
+            if (blkDomain.size > 0) {
+                hosts.putAll(blkDomain.map { it to "127.0.0.1" })
+            }
+
+            // hardcode googleapi rule to fix play store problems
+            hosts["domain:googleapis.cn"] = "googleapis.com"
+
+            // DNS dns对象
+            v2rayConfig.dns = V2rayConfig.DnsBean(
+                    servers = servers,
+                    hosts = hosts)
+
+            // DNS routing
+            if (Utils.isPureIpAddress(remoteDns.first())) {
                v2rayConfig.routing.rules.add(0, V2rayConfig.RoutingBean.RulesBean(
                        type = "field",
                        outboundTag = AppConfig.TAG_AGENT,
@@ -323,15 +381,6 @@ object V2rayConfigUtil {
                        domain = null)
                )
            }
-
-            // DNS routing tag
-            v2rayConfig.routing.rules.add(0, V2rayConfig.RoutingBean.RulesBean(
-                    type = "field",
-                    inboundTag = arrayListOf("dns-in"),
-                    outboundTag = "dns-out",
-                    domain = null)
-            )
-
        } catch (e: Exception) {
            e.printStackTrace()
            return false
@@ -339,21 +388,29 @@ object V2rayConfigUtil {
        return true
    }

-    /**
-     * Custom Remote Dns
-     */
-    private fun customRemoteDns(v2rayConfig: V2rayConfig): Boolean {
+    private fun httpRequestObject(outbound: V2rayConfig.OutboundBean): Boolean {
        try {
-            val servers = ArrayList<Any>()
-            val hosts = mutableMapOf<String, String>()
+            if (outbound.streamSettings?.network == DEFAULT_NETWORK
+                    && outbound.streamSettings?.tcpSettings?.header?.type == HTTP) {
+                val path = outbound.streamSettings?.tcpSettings?.header?.request?.path
+                val host = outbound.streamSettings?.tcpSettings?.header?.request?.headers?.Host

-            Utils.getRemoteDnsServers().forEach {
-                servers.add(it)
+                val requestString: String by lazy {
+                    """{"version":"1.1","method":"GET","headers":{"User-Agent":["Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36","Mozilla/5.0 (iPhone; CPU iPhone OS 10_0_2 like Mac OS X) AppleWebKit/601.1 (KHTML, like Gecko) CriOS/53.0.2785.109 Mobile/14A456 Safari/601.1.46"],"Accept-Encoding":["gzip, deflate"],"Connection":["keep-alive"],"Pragma":"no-cache"}}"""
+                }
+                outbound.streamSettings?.tcpSettings?.header?.request = Gson().fromJson(
+                    requestString,
+                    V2rayConfig.OutboundBean.StreamSettingsBean.TcpSettingsBean.HeaderBean.RequestBean::class.java
+                )
+                outbound.streamSettings?.tcpSettings?.header?.request?.path =
+                    if (path.isNullOrEmpty()) {
+                        listOf("/")
+                    } else {
+                        path
+                    }
+                outbound.streamSettings?.tcpSettings?.header?.request?.headers?.Host = host!!
            }
-            // hardcode googleapi rule to fix play store problems
-            hosts.put("domain:googleapis.cn", "googleapis.com")

-            v2rayConfig.dns = V2rayConfig.DnsBean(servers = servers, hosts = hosts)
        } catch (e: Exception) {
            e.printStackTrace()
            return false
@@ -361,16 +418,4 @@ object V2rayConfigUtil {
        return true
    }

-    /**
-     * is valid config
-     */
-    fun isValidConfig(conf: String): Boolean {
-        return try {
-            val jObj = JSONObject(conf)
-            //hasBound = (jObj.has("outbounds") and jObj.has("inbounds")) or (jObj.has("outbound") and jObj.has("inbound"))
-            jObj.has("outbounds") or jObj.has("outbound")
-        } catch (e: JSONException) {
-            false
-        }
-    }
 }
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/MainViewModel.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/MainViewModel.kt
@@ -1,8 +1,8 @@
 package com.v2ray.ang.viewmodel

 import android.app.Application
-import android.arch.lifecycle.AndroidViewModel
-import android.arch.lifecycle.MutableLiveData
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.MutableLiveData
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -21,12 +21,15 @@ import com.v2ray.ang.util.*
 import com.v2ray.ang.util.MmkvManager.KEY_ANG_CONFIGS
 import kotlinx.coroutines.*
 import java.util.*
+import java.util.concurrent.ConcurrentHashMap

 class MainViewModel(application: Application) : AndroidViewModel(application) {
    private val mainStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_MAIN, MMKV.MULTI_PROCESS_MODE) }
+    private val serverRawStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SERVER_RAW, MMKV.MULTI_PROCESS_MODE) }

-    var serverList= MmkvManager.decodeServerList()
+    var serverList = MmkvManager.decodeServerList()
        private set
+    val serversCache = ConcurrentHashMap<String, ServerConfig>()
    val isRunning by lazy { MutableLiveData<Boolean>() }
    val updateListAction by lazy { MutableLiveData<Int>() }
    val updateTestResultAction by lazy { MutableLiveData<String>() }
@@ -49,6 +52,7 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {

    fun reloadServerList() {
        serverList = MmkvManager.decodeServerList()
+        updateCache()
        updateListAction.value = -1
    }

@@ -61,7 +65,10 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
        val config = ServerConfig.create(EConfigType.CUSTOM)
        config.remarks = System.currentTimeMillis().toString()
        config.fullConfig = Gson().fromJson(server, V2rayConfig::class.java)
-        serverList.add(MmkvManager.encodeServerConfig("", config))
+        val key = MmkvManager.encodeServerConfig("", config)
+        serverRawStorage?.encode(key, server)
+        serverList.add(key)
+        serversCache[key] = config
    }

    fun swapServer(fromPosition: Int, toPosition: Int) {
@@ -69,6 +76,17 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
        mainStorage?.encode(KEY_ANG_CONFIGS, Gson().toJson(serverList))
    }

+    fun updateCache() {
+        serversCache.clear()
+        GlobalScope.launch(Dispatchers.Default) {
+            serverList.forEach { guid ->
+                MmkvManager.decodeServerConfig(guid)?.let {
+                    serversCache[guid] = it
+                }
+            }
+        }
+    }
+
    fun testAllTcping() {
        tcpingTestScope.coroutineContext[Job]?.cancelChildren()
        Utils.closeAllTcpSockets()
@@ -77,7 +95,7 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {

        getApplication<AngApplication>().toast(R.string.connection_test_testing)
        for (guid in serverList) {
-            MmkvManager.decodeServerConfig(guid)?.getProxyOutbound()?.let { outbound ->
+            serversCache.getOrElse(guid) { MmkvManager.decodeServerConfig(guid) }?.getProxyOutbound()?.let { outbound ->
                val serverAddress = outbound.getServerAddress()
                val serverPort = outbound.getServerPort()
                if (serverAddress != null && serverPort != null) {
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/SettingsViewModel.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/SettingsViewModel.kt
@@ -1,9 +1,9 @@
 package com.v2ray.ang.viewmodel

 import android.app.Application
-import android.arch.lifecycle.AndroidViewModel
+import androidx.lifecycle.AndroidViewModel
 import android.content.SharedPreferences
-import android.support.v7.preference.PreferenceManager
+import androidx.preference.PreferenceManager
 import android.util.Log
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
@@ -27,6 +27,7 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
        Log.d(AppConfig.ANG_PACKAGE, "Observe settings changed: $key")
        when(key) {
            AppConfig.PREF_MODE,
+            AppConfig.PREF_VPN_DNS,
            AppConfig.PREF_REMOTE_DNS,
            AppConfig.PREF_DOMESTIC_DNS,
            AppConfig.PREF_ROUTING_DOMAIN_STRATEGY,
@@ -37,14 +38,17 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
                settingsStorage?.encode(key, sharedPreferences.getString(key, ""))
            }
            AppConfig.PREF_SPEED_ENABLED,
-            AppConfig.PREF_SNIFFING_ENABLED,
            AppConfig.PREF_PROXY_SHARING,
            AppConfig.PREF_LOCAL_DNS_ENABLED,
+            AppConfig.PREF_FAKE_DNS_ENABLED,
            AppConfig.PREF_FORWARD_IPV6,
            AppConfig.PREF_PER_APP_PROXY,
            AppConfig.PREF_BYPASS_APPS, -> {
                settingsStorage?.encode(key, sharedPreferences.getBoolean(key, false))
            }
+            AppConfig.PREF_SNIFFING_ENABLED -> {
+                settingsStorage?.encode(key, sharedPreferences.getBoolean(key, true))
+            }
            AppConfig.PREF_PER_APP_PROXY_SET -> {
                settingsStorage?.encode(key, sharedPreferences.getStringSet(key, setOf()))
            }
--- a/V2rayNG/app/src/main/res/color-v21/color_highlight_material.xml
+++ b/V2rayNG/app/src/main/res/color-v21/color_highlight_material.xml
--- a/V2rayNG/app/src/main/res/layout/activity_bypass_list.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_bypass_list.xml
@@ -13,17 +13,17 @@
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" />

-    <android.support.v7.widget.RecyclerView
+    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
-        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        tools:context=".ui.PerAppProxyActivity" />

-    <android.support.v7.widget.LinearLayoutCompat
+    <androidx.appcompat.widget.LinearLayoutCompat
        android:id="@+id/header_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
@@ -37,7 +37,7 @@
            android:layout_width="match_parent"
            android:layout_height="@dimen/bypass_list_header_height">

-            <android.support.v7.widget.SwitchCompat
+            <androidx.appcompat.widget.SwitchCompat
                android:id="@+id/switch_per_app_proxy"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
@@ -45,7 +45,7 @@
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true" />

-            <android.support.v7.widget.AppCompatTextView
+            <androidx.appcompat.widget.AppCompatTextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
@@ -63,7 +63,7 @@
            android:layout_width="match_parent"
            android:layout_height="@dimen/bypass_list_header_height">

-            <android.support.v7.widget.SwitchCompat
+            <androidx.appcompat.widget.SwitchCompat
                android:id="@+id/switch_bypass_apps"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
@@ -71,7 +71,7 @@
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true" />

-            <android.support.v7.widget.AppCompatTextView
+            <androidx.appcompat.widget.AppCompatTextView
                android:id="@+id/tv_bypass_apps"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
@@ -89,11 +89,11 @@
            android:layout_width="match_parent"
            android:layout_height="@dimen/bypass_list_header_height">

-            <android.support.design.widget.TextInputLayout
+            <com.google.android.material.textfield.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

-                <android.support.v7.widget.AppCompatEditText
+                <androidx.appcompat.widget.AppCompatEditText
                    android:id="@+id/et_search"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
@@ -103,11 +103,11 @@
                    android:maxLines="1"
                    android:singleLine="true"
                    android:textAppearance="@style/TextAppearance.AppCompat.Small" />
-            </android.support.design.widget.TextInputLayout>
+            </com.google.android.material.textfield.TextInputLayout>

        </RelativeLayout>


-    </android.support.v7.widget.LinearLayoutCompat>
+    </androidx.appcompat.widget.LinearLayoutCompat>

-</RelativeLayout>
+</RelativeLayout>
--- a/V2rayNG/app/src/main/res/layout/activity_main.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_main.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
@@ -12,19 +12,19 @@
        android:layout_height="match_parent"
        android:orientation="vertical">

-        <android.support.design.widget.AppBarLayout
+        <com.google.android.material.appbar.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/AppTheme.AppBarOverlay">

-            <android.support.v7.widget.Toolbar
+            <androidx.appcompat.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/AppTheme.PopupOverlay" />

-        </android.support.design.widget.AppBarLayout>
+        </com.google.android.material.appbar.AppBarLayout>

        <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
@@ -34,7 +34,7 @@
            android:fitsSystemWindows="true"
            tools:context=".ui.MainActivity">

-            <android.support.design.widget.CoordinatorLayout
+            <androidx.coordinatorlayout.widget.CoordinatorLayout
                android:id="@+id/main_content"
                android:layout_width="match_parent"
                android:layout_height="match_parent">
@@ -44,7 +44,7 @@
                    android:layout_height="match_parent"
                    android:orientation="vertical">

-                    <android.support.v7.widget.RecyclerView
+                    <androidx.recyclerview.widget.RecyclerView
                        android:id="@+id/recycler_view"
                        android:layout_width="match_parent"
                        android:layout_height="0dp"
@@ -83,7 +83,7 @@
                    android:layout_marginBottom="24dp"
                    android:layout_gravity="bottom|end">

-                    <android.support.design.widget.FloatingActionButton
+                    <com.google.android.material.floatingactionbutton.FloatingActionButton
                        android:id="@+id/fab"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
@@ -101,11 +101,11 @@
                        android:nextFocusLeft="@+id/recycler_view" />

                </com.github.jorgecastilloprz.FABProgressCircle>
-            </android.support.design.widget.CoordinatorLayout>
+            </androidx.coordinatorlayout.widget.CoordinatorLayout>
        </RelativeLayout>
    </LinearLayout>

-    <android.support.design.widget.NavigationView
+    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
@@ -129,7 +129,7 @@
                    android:gravity="center"
                    android:textColor="@color/accent" />
        </LinearLayout>
-    </android.support.design.widget.NavigationView>
+    </com.google.android.material.navigation.NavigationView>

-</android.support.v4.widget.DrawerLayout>
+</androidx.drawerlayout.widget.DrawerLayout>

--- a/V2rayNG/app/src/main/res/layout/activity_routing_settings.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_routing_settings.xml
@@ -4,14 +4,14 @@
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical">

-    <android.support.design.widget.TabLayout
+    <com.google.android.material.tabs.TabLayout
        android:id="@+id/tablayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

-    <android.support.v4.view.ViewPager
+    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

-</LinearLayout>
+</LinearLayout>
--- a/V2rayNG/app/src/main/res/layout/activity_server_custom_config.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_server_custom_config.xml
@@ -8,14 +8,13 @@
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
-        android:orientation="vertical"
-        android:padding="@dimen/layout_margin_top_height">
+        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
-            android:paddingBottom="@dimen/layout_margin_top_height">
+            android:layout_margin="@dimen/layout_margin_spacing">

            <TextView
                android:layout_width="wrap_content"
@@ -28,7 +27,8 @@
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
-            android:orientation="vertical">
+            android:orientation="vertical"
+            android:layout_margin="@dimen/layout_margin_spacing">

            <TextView
                android:layout_width="wrap_content"
@@ -40,7 +40,7 @@
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
-            android:layout_marginTop="@dimen/layout_margin_top_height"
+            android:layout_margin="@dimen/layout_margin_spacing"
            android:orientation="vertical">

            <TextView
@@ -59,24 +59,24 @@
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
-            android:layout_marginTop="@dimen/layout_margin_top_height"
            android:orientation="vertical">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
+                android:layout_margin="@dimen/layout_margin_spacing"
                android:text="@string/server_lab_content"
                android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

-            <EditText
-                android:id="@+id/tv_content"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:layout_marginTop="@dimen/layout_margin_top_height"
-                android:text="" />
+            <com.blacksquircle.ui.editorkit.widget.TextProcessor
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:gravity="top|start"
+                    android:id="@+id/editor"
+                    android:layout_marginTop="@dimen/layout_margin_top_height" />
        </LinearLayout>



    </LinearLayout>
-</ScrollView>
+</ScrollView>
--- a/V2rayNG/app/src/main/res/layout/activity_server_vmess.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_server_vmess.xml
@@ -98,26 +98,6 @@

        </LinearLayout>

-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="@dimen/layout_margin_top_height"
-            android:orientation="vertical">
-
-            <TextView
-                android:id="@+id/tv_alterId"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/server_lab_alterid" />
-
-            <EditText
-                android:id="@+id/et_alterId"
-                android:layout_width="match_parent"
-                android:layout_height="@dimen/edit_height"
-                android:inputType="number" />
-
-        </LinearLayout>
-
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
@@ -174,6 +154,7 @@
            android:orientation="vertical">

            <TextView
+                android:id="@+id/sp_header_type_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/server_lab_head_type" />
@@ -181,8 +162,7 @@
            <Spinner
                android:id="@+id/sp_header_type"
                android:layout_width="match_parent"
-                android:layout_height="@dimen/edit_height"
-                android:entries="@array/headertypes" />
+                android:layout_height="@dimen/edit_height" />
        </LinearLayout>

        <LinearLayout
--- a/V2rayNG/app/src/main/res/layout/activity_sub_setting.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_sub_setting.xml
@@ -8,15 +8,15 @@
    android:fitsSystemWindows="true"
    tools:context=".ui.MainActivity">

-    <android.support.design.widget.CoordinatorLayout
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/main_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

-        <android.support.v7.widget.RecyclerView
+        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

-    </android.support.design.widget.CoordinatorLayout>
-</RelativeLayout>
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+</RelativeLayout>
--- a/V2rayNG/app/src/main/res/layout/activity_tasker.xml
+++ b/V2rayNG/app/src/main/res/layout/activity_tasker.xml
@@ -10,7 +10,7 @@
        android:layout_width="match_parent"
        android:layout_height="@dimen/bypass_list_header_height">

-        <android.support.v7.widget.SwitchCompat
+        <androidx.appcompat.widget.SwitchCompat
            android:id="@+id/switch_start_service"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
@@ -19,7 +19,7 @@
            android:layout_centerVertical="true"
            android:checked="true" />

-        <android.support.v7.widget.AppCompatTextView
+        <androidx.appcompat.widget.AppCompatTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
@@ -45,4 +45,4 @@
            android:choiceMode="singleChoice" />
    </LinearLayout>

-</LinearLayout>
+</LinearLayout>
--- a/V2rayNG/app/src/main/res/layout/item_recycler_bypass_list.xml
+++ b/V2rayNG/app/src/main/res/layout/item_recycler_bypass_list.xml
@@ -7,7 +7,7 @@
    android:clickable="true"
    android:focusable="true">

-    <android.support.v7.widget.AppCompatImageView
+    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/icon"
        android:layout_width="46dp"
        android:layout_height="46dp"
@@ -25,12 +25,12 @@
        android:paddingStart="@dimen/layout_margin_right_height"
        android:paddingEnd="@dimen/layout_margin_right_height">

-        <android.support.v7.widget.AppCompatTextView
+        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

-        <android.support.v7.widget.AppCompatTextView
+        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/package_name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
@@ -38,7 +38,7 @@
    </LinearLayout>


-    <android.support.v7.widget.AppCompatCheckBox
+    <androidx.appcompat.widget.AppCompatCheckBox
        android:id="@+id/check_box"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
@@ -49,4 +49,4 @@
        android:paddingEnd="6dp"
        android:paddingRight="6dp" />

-</LinearLayout>
+</LinearLayout>
--- a/V2rayNG/app/src/main/res/layout/item_recycler_main.xml
+++ b/V2rayNG/app/src/main/res/layout/item_recycler_main.xml
@@ -7,7 +7,7 @@
        android:layout_height="wrap_content"
        android:gravity="center_vertical">

-    <android.support.v7.widget.CardView
+    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="3dp"
@@ -24,7 +24,7 @@
            android:focusable="true"
            android:nextFocusRight="@+id/layout_share">

-            <android.support.v7.widget.AppCompatRadioButton
+            <androidx.appcompat.widget.AppCompatRadioButton
                    android:id="@+id/btn_radio"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
@@ -182,5 +182,5 @@
            </LinearLayout>
        </LinearLayout>

-    </android.support.v7.widget.CardView>
+    </androidx.cardview.widget.CardView>
 </LinearLayout>
--- a/V2rayNG/app/src/main/res/layout/item_recycler_sub_setting.xml
+++ b/V2rayNG/app/src/main/res/layout/item_recycler_sub_setting.xml
@@ -5,7 +5,7 @@
    android:layout_height="wrap_content"
    android:gravity="center_vertical">

-    <android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
+    <androidx.cardview.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
        android:id="@+id/item_cardview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
@@ -102,5 +102,5 @@

        </LinearLayout>

-    </android.support.v7.widget.CardView>
-</LinearLayout>
+    </androidx.cardview.widget.CardView>
+</LinearLayout>
--- a/V2rayNG/app/src/main/res/layout/nav_toolbar.xml
+++ b/V2rayNG/app/src/main/res/layout/nav_toolbar.xml
@@ -1,15 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.AppBarLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<com.google.android.material.appbar.AppBarLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="?android:attr/actionBarSize"
    android:theme="@style/AppTheme.AppBarOverlay">

-    <android.support.v7.widget.Toolbar
+    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/AppTheme.PopupOverlay" />

-</android.support.design.widget.AppBarLayout>
+</com.google.android.material.appbar.AppBarLayout>
--- a/V2rayNG/app/src/main/res/layout/nav_view.xml
+++ b/V2rayNG/app/src/main/res/layout/nav_view.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.NavigationView xmlns:android="http://schemas.android.com/apk/res/android"
+<com.google.android.material.navigation.NavigationView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
@@ -8,4 +8,4 @@
    app:headerLayout="@layout/nav_header"
    app:itemTextColor="@color/colorPrimary"
    app:itemIconTint="@color/colorPrimary_dark"
-    app:menu="@menu/menu_drawer" />
+    app:menu="@menu/menu_drawer" />
--- a/V2rayNG/app/src/main/res/layout/preference_with_help_link.xml
+++ b/V2rayNG/app/src/main/res/layout/preference_with_help_link.xml
@@ -1,9 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Button xmlns:android="http://schemas.android.com/apk/res/android"
-        style="@style/Widget.AppCompat.Button.Borderless"
+    xmlns:tools="http://schemas.android.com/tools"
+    style="@style/Widget.AppCompat.Button.Borderless"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:onClick="onModeHelpClicked"
        android:text="@string/title_mode_help"
        android:textAlignment="textStart"
-        android:textStyle="italic" />
+        android:textStyle="italic"
+    tools:ignore="UsingOnClickInXml" />
--- a/V2rayNG/app/src/main/res/values-v21/strings.xml
+++ b/V2rayNG/app/src/main/res/values-v21/strings.xml
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <string name="summary_pref_per_app_proxy">Set proxy for selected apps</string>
-</resources>
--- a/V2rayNG/app/src/main/res/values-v21/styles.xml
+++ b/V2rayNG/app/src/main/res/values-v21/styles.xml
@@ -1,8 +0,0 @@
-<resources>
-
-    <style name="AppTheme.NoActionBar">
-        <item name="windowActionBar">false</item>
-        <item name="windowNoTitle">true</item>
-        <item name="android:statusBarColor">@android:color/transparent</item>
-    </style>
-</resources>
--- a/V2rayNG/app/src/main/res/values-zh-rCN-v21/strings.xml
+++ b/V2rayNG/app/src/main/res/values-zh-rCN-v21/strings.xml
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <string name="summary_pref_per_app_proxy">为应用程序分别设置代理</string>
-</resources>
--- a/V2rayNG/app/src/main/res/values-zh-rCN/strings.xml
+++ b/V2rayNG/app/src/main/res/values-zh-rCN/strings.xml
@@ -38,15 +38,15 @@
    <string name="server_lab_address">地址(address)</string>
    <string name="server_lab_port">端口(port)</string>
    <string name="server_lab_id">用户ID(id)</string>
-    <string name="server_lab_alterid">额外ID(alterId)</string>
    <string name="server_lab_security">加密方式(security)</string>
    <string name="server_lab_network">传输协议(network)</string>
    <string name="server_lab_more_function">功能设置（不清楚则保持默认值）</string>
    <string name="server_lab_head_type">伪装类型(type)</string>
-    <string name="server_lab_request_host">伪装域名host(host/ws host/h2 host)/QUIC 加密方式</string>
-    <string name="server_lab_path">path(ws path/h2 path)/QUIC 加密密钥</string>
-    <string name="server_lab_stream_security">底层传输安全</string>
-    <string name="server_lab_allow_insecure">allowInsecure</string>
+    <string name="server_lab_mode_type">gRPC 传输模式 (mode)</string>
+    <string name="server_lab_request_host">伪装域名(host)(host/ws host/h2 host)/QUIC 加密方式</string>
+    <string name="server_lab_path">path(ws path/h2 path)/QUIC 加密密钥/kcp seed/gRPC serviceName</string>
+    <string name="server_lab_stream_security">底层传输安全(tls)</string>
+    <string name="server_lab_allow_insecure">跳过证书验证(allowInsecure)</string>
    <string name="server_lab_address3">服务器地址</string>
    <string name="server_lab_port3">服务器端口</string>
    <string name="server_lab_id3">密码</string>
@@ -76,9 +76,9 @@
    <!-- Preferences -->
    <string name="title_settings">设置</string>
    <string name="title_advanced">进阶设置</string>
-
+    <string name="title_vpn_settings">VPN 设置</string>
    <string name="title_pref_per_app_proxy">分应用代理</string>
-    <string name="summary_pref_per_app_proxy">分应用代理仅支持 Android 5.0 Lollipop 及更高</string>
+    <string name="summary_pref_per_app_proxy">常规:勾选的App被代理,未勾选的直连;\n绕行模式:勾选的App直连,未勾选的被代理.\n不明白者在菜单中选择自动选中需代理应用</string>

    <string name="title_pref_mux_enabled">启用Mux多路复用</string>
    <string name="summary_pref_mux_enabled">开启可能会加速,关闭可能会减少断流</string>
@@ -87,10 +87,13 @@
    <string name="summary_pref_speed_enabled">在通知中显示当前速度\n小图标显示流量的路由情况</string>

    <string name="title_pref_sniffing_enabled">启用流量探测</string>
-    <string name="summary_pref_sniffing_enabled">流量探测</string>
+    <string name="summary_pref_sniffing_enabled">从流量中探测域名 (默认启用)</string>

    <string name="title_pref_local_dns_enabled">启用本地DNS</string>
-    <string name="summary_pref_local_dns_enabled">DNS由本地设备的v2Ray-core处理（测试）</string>
+    <string name="summary_pref_local_dns_enabled">DNS 请求导入 core 由 DNS 模块处理（推荐启用 如果需要路由绕过局域网及大陆地址)</string>
+
+    <string name="title_pref_fake_dns_enabled">启用虚拟DNS</string>
+    <string name="summary_pref_fake_dns_enabled">本地返回虚构解析结果 (减低延时 但个别应用可能无法使用)</string>

    <string name="title_pref_forward_ipv6">IPv6 路由</string>
    <string name="summary_pref_forward_ipv6">转发 IPv6 流量到远程服务器（测试）</string>
@@ -107,7 +110,9 @@
    <string name="title_pref_remote_dns">远程DNS (可选)</string>
    <string name="summary_pref_remote_dns">DNS</string>

-    <string name="title_pref_domestic_dns">境内DNS (可选，本地DNS模式下生效)</string>
+    <string name="title_pref_vpn_dns">VPN DNS (仅支持 IPv4/v6)</string>
+
+    <string name="title_pref_domestic_dns">境内DNS (可选)</string>
    <string name="summary_pref_domestic_dns">DNS</string>

    <string name="title_pref_socks_port">SOCKS5代理端口</string>
@@ -116,6 +121,9 @@
    <string name="title_pref_http_port">HTTP代理端口</string>
    <string name="summary_pref_http_port">HTTP代理端口</string>

+    <string name="title_pref_local_dns_port">本地DNS端口</string>
+    <string name="summary_pref_local_dns_port">本地DNS端口</string>
+
    <string name="title_pref_feedback">反馈</string>
    <string name="summary_pref_feedback">反馈改进或漏洞至 GitHub</string>
    <string name="summary_pref_tg_group">加入Telegram Group</string>
--- a/V2rayNG/app/src/main/res/values-zh-rTW-v21/strings.xml
+++ b/V2rayNG/app/src/main/res/values-zh-rTW-v21/strings.xml
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <string name="summary_pref_per_app_proxy">為選擇的應用程式設定 Proxy</string>
-</resources>
--- a/V2rayNG/app/src/main/res/values-zh-rTW/strings.xml
+++ b/V2rayNG/app/src/main/res/values-zh-rTW/strings.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
    <string name="app_name">v2rayNG</string>
-    <string name="app_widget_name">切換</string>
-    <string name="app_tile_name">切換</string>
+    <string name="app_widget_name">開關</string>
+    <string name="app_tile_name">開關</string>
    <string name="app_tile_first_use">首次使用此功能，請使用此應用程式新增組態</string>
    <string name="navigation_drawer_open">Open navigation drawer</string>
    <string name="navigation_drawer_close">Close navigation drawer</string>
-    <string name="migration_success">數據遷移成功!</string>
-    <string name="migration_fail">數據遷移失敗啦!</string>
+    <string name="migration_success">資料遷移成功！</string>
+    <string name="migration_fail">資料遷移失敗！</string>

    <!-- Notifications -->
    <string name="notification_action_stop_v2ray">停止</string>
@@ -23,11 +23,11 @@
    <string name="menu_item_add_config">新增組態</string>
    <string name="menu_item_save_config">儲存組態</string>
    <string name="menu_item_del_config">刪除組態</string>
-    <string name="menu_item_import_config_qrcode">自 QR 碼匯入組態</string>
+    <string name="menu_item_import_config_qrcode">自 QR Code 匯入組態</string>
    <string name="menu_item_import_config_clipboard">自剪貼簿匯入組態</string>
-    <string name="menu_item_import_config_manually_vmess">手動鍵入[Vmess]</string>
-    <string name="menu_item_import_config_manually_ss">手動鍵入[Shadowsocks]</string>
-    <string name="menu_item_import_config_manually_socks">手動鍵入[Socks]</string>
+    <string name="menu_item_import_config_manually_vmess">手動鍵入 [Vmess]</string>
+    <string name="menu_item_import_config_manually_ss">手動鍵入 [Shadowsocks]</string>
+    <string name="menu_item_import_config_manually_socks">手動鍵入 [Socks]</string>
    <string name="menu_item_import_config_custom">自訂組態</string>
    <string name="menu_item_import_config_custom_clipboard">自剪貼簿匯入自訂組態</string>
    <string name="menu_item_import_config_custom_local">自本機匯入自訂組態</string>
@@ -37,16 +37,16 @@
    <string name="server_lab_remarks">備註</string>
    <string name="server_lab_address">位址</string>
    <string name="server_lab_port">埠</string>
-    <string name="server_lab_id">使用者識別碼</string>
-    <string name="server_lab_alterid">AlterId</string>
+    <string name="server_lab_id">使用者 ID</string>
    <string name="server_lab_security">安全性</string>
    <string name="server_lab_network">網路</string>
    <string name="server_lab_more_function">更多功能</string>
    <string name="server_lab_head_type">標頭類型</string>
-    <string name="server_lab_request_host">要求主機(host/ws host/h2 host)/QUIC加密方式</string>
-    <string name="server_lab_path">path(ws path/h2 path)/QUIC加密密鑰</string>
-    <string name="server_lab_stream_security">傳輸層安全性</string>
-    <string name="server_lab_allow_insecure">allowInsecure</string>
+    <string name="server_lab_mode_type">gRPC 傳輸模式 (mode)</string>
+    <string name="server_lab_request_host">要求主機 (host)(host/ws host/h2 host)/QUIC 加密方式</string>
+    <string name="server_lab_path">path(ws path/h2 path)/QUIC 加密金鑰/kcp seed/gRPC serviceName</string>
+    <string name="server_lab_stream_security">傳輸層安全性 (tls)</string>
+    <string name="server_lab_allow_insecure">跳過憑證驗證 (allowInsecure)</string>
    <string name="server_lab_address3">伺服器位址</string>
    <string name="server_lab_port3">伺服器埠</string>
    <string name="server_lab_id3">密碼</string>
@@ -63,114 +63,121 @@
    <string name="server_lab_content">內容</string>
    <string name="toast_none_data_clipboard">剪貼簿內無資料</string>
    <string name="toast_invalid_url">網址無效</string>
-    <string name="server_lab_need_inbound">確保inbound有socks=10808,http=10809</string>
+    <string name="server_lab_need_inbound">確保 inbound 有 socks=10808,http=10809</string>

    <!-- PerAppProxyActivity -->
    <string name="msg_dialog_progress">載入</string>
    <string name="menu_item_select_all">全選</string>
    <string name="msg_enter_keywords">輸入關鍵字</string>
    <string name="switch_bypass_apps_mode">略過模式</string>
-    <string name="menu_item_select_proxy_app">自動選中需代理應用</string>
+    <string name="menu_item_select_proxy_app">自動選中需要 Proxy 的應用</string>
    <string name="msg_downloading_content">正在下載內容</string>


    <!-- Preferences -->
    <string name="title_settings">設定</string>
-    <string name="title_advanced">進階設定</string>
-
+    <string name="title_advanced">進階</string>
+    <string name="title_vpn_settings">VPN 設定</string>
    <string name="title_pref_per_app_proxy">Proxy 個別應用程式</string>
-    <string name="summary_pref_per_app_proxy">Proxy 個別應用程式模式只支援 Android 5.0 (Lollipop) 或更高</string>
+    <string name="summary_pref_per_app_proxy">常規:勾選的App被代理,未勾選的直連;\n繞行模式:勾選的App直連,未勾選的被代理.\n不明白者在菜單中選擇自動選中需代理應用</string>

    <string name="title_pref_mux_enabled">啟用 Mux</string>
-    <string name="summary_pref_mux_enabled">啟用或許會加快網路速度，切換或許會閃爍</string>
+    <string name="summary_pref_mux_enabled">啟用或許會加快網路速度，關閉或許會閃爍</string>

    <string name="title_pref_speed_enabled">啟用速度顯示</string>
-    <string name="summary_pref_speed_enabled">在通知中顯示當前速度\n小圖標顯示流量的路由情況</string>
+    <string name="summary_pref_speed_enabled">在通知中顯示當前速度\n小圖示顯示流量的轉送情況</string>

-    <string name="title_pref_sniffing_enabled">啟用流量探測</string>
-    <string name="summary_pref_sniffing_enabled">流量探測</string>
+    <string name="title_pref_sniffing_enabled">啟用網路監測</string>
+    <string name="summary_pref_sniffing_enabled">從封包中監測網域 (預設啟用)</string>

-    <string name="title_pref_local_dns_enabled">啟用本地DNS</string>
-    <string name="summary_pref_local_dns_enabled">DNS請求由本地的v2ray core處理（測試）</string>
+    <string name="title_pref_local_dns_enabled">啟用本地 DNS</string>
+    <string name="summary_pref_local_dns_enabled">DNS 請求匯入 core 由 DNS 模塊處理 (建議啟用，可能需要轉送略過局域網及中國大陸)</string>
+
+    <string name="title_pref_fake_dns_enabled">啟用偽 DNS</string>
+    <string name="summary_pref_fake_dns_enabled">本地返回偽造解析結果 (減低延時，但個別應用可能無法使用)</string>

    <string name="title_pref_forward_ipv6">IPv6 路由</string>
-    <string name="summary_pref_forward_ipv6">向遠端重新導向 IPv6 流量（測試）</string>
+    <string name="summary_pref_forward_ipv6">向遠端重新導向 IPv6 流量 (測試)</string>

-    <string name="title_pref_routing">路由設置</string>
-    <string name="title_pref_routing_domain_strategy">域名策略</string>
-    <string name="title_pref_routing_mode">路由模式</string>
-    <string name="title_pref_routing_custom">自訂路由</string>
+    <string name="title_pref_routing">轉送設定</string>
+    <string name="title_pref_routing_domain_strategy">網域策略</string>
+    <string name="title_pref_routing_mode">轉送模式</string>
+    <string name="title_pref_routing_custom">自訂轉送</string>

-    <string name="title_pref_donate">捐款</string>
-    <string name="summary_pref_donate">向開發人員捐款</string>
+    <string name="title_pref_donate">捐助</string>
+    <string name="summary_pref_donate">向開發人員捐助</string>
    <string name="donate_detail">新增一些實驗性進階功能</string>

-    <string name="title_pref_remote_dns">遠端DNS (可選)</string>
+    <string name="title_pref_remote_dns">遠端 DNS (可選)</string>
    <string name="summary_pref_remote_dns">DNS</string>

-    <string name="title_pref_domestic_dns">境内DNS (可選，僅本地DNS模式下生效)</string>
+    <string name="title_pref_vpn_dns">VPN DNS (僅支援 IPv4/v6)</string>
+
+    <string name="title_pref_domestic_dns">境内 DNS (可選)</string>
    <string name="summary_pref_domestic_dns">DNS</string>

-    <string name="title_pref_socks_port">SOCKS5代理連接埠</string>
-    <string name="summary_pref_socks_port">SOCKS5代理連接埠</string>
+    <string name="title_pref_socks_port">SOCKS5 Proxy 埠</string>
+    <string name="summary_pref_socks_port">SOCKS5 Proxy 埠</string>

-    <string name="title_pref_http_port">HTTP代理連接埠</string>
-    <string name="summary_pref_http_port">HTTP代理連接埠</string>
+    <string name="title_pref_http_port">HTTP Proxy 埠</string>
+    <string name="summary_pref_http_port">HTTP Proxy 埠</string>

+    <string name="title_pref_local_dns_port">本地 DNS 埠</string>
+    <string name="summary_pref_local_dns_port">本地 DNS 埠</string>

-    <string name="title_pref_feedback">回饋</string>
-    <string name="summary_pref_feedback">回饋提升或前往 GitHub 回報 Bug</string>
-    <string name="summary_pref_tg_group">加入Telegram Group</string>
-    <string name="toast_tg_app_not_found">未找到Telegram app</string>
+    <string name="title_pref_feedback">意見回饋</string>
+    <string name="summary_pref_feedback">前往 GitHub 回報錯誤</string>
+    <string name="summary_pref_tg_group">加入 Telegram 群組</string>
+    <string name="toast_tg_app_not_found">未找到 Telegram 應用程式</string>

    <string name="title_pref_promotion">推廣</string>
-    <string name="summary_pref_promotion">一些推廣,點擊查看詳情(捐款可去除)</string>
+    <string name="summary_pref_promotion">一些推廣，輕觸以檢視 (捐贈可去除)</string>

    <string name="title_mode">模式</string>
    <string name="title_mode_help">點此查看更多幫助</string>

-    <string name="donate_error_setup">錯誤設定:</string>
-    <string name="donate_error_inventory">Error querying inventory</string>
-    <string name="donate_error_purchase1">購買錯誤:</string>
+    <string name="donate_error_setup">錯誤設定：</string>
+    <string name="donate_error_inventory">未查詢到庫存</string>
+    <string name="donate_error_purchase1">購買錯誤：</string>
    <string name="donate_error_purchase2">購買錯誤，真實性驗證失敗。</string>
-    <string name="donate_success_purchase">感謝您的捐款！</string>
-    <string name="donate_item_click">捐款</string>
+    <string name="donate_success_purchase">感謝您的捐助！</string>
+    <string name="donate_item_click">捐助</string>
    <string name="donate_item_paypal">Paypal</string>

    <string name="title_logcat">Logcat</string>
    <string name="logcat_copy">複製</string>
    <string name="logcat_delete">刪除</string>
-    <string name="title_export_all">匯出全部(非自訂)配置至剪貼簿</string>
+    <string name="title_export_all">匯出全部 (非自訂) 組態至剪貼簿</string>
    <string name="title_sub_setting">訂閱設定</string>
    <string name="sub_setting_remarks">備註</string>
-    <string name="sub_setting_url">位址(url)</string>
+    <string name="sub_setting_url">位址 (url)</string>
    <string name="title_sub_update">更新訂閱</string>
-    <string name="title_ping_all_server">測試所有配置延遲(Tcping)</string>
+    <string name="title_ping_all_server">測試所有組態延遲 (Tcping)</string>

    <string name="tasker_start_service">啟動服務</string>
    <string name="tasker_setting_confirm">確定</string>

-    <string name="routing_settings_title">路由設定</string>
-    <string name="routing_settings_tips">以英文逗號「,」分隔，記得儲存唷</string>
+    <string name="routing_settings_title">轉送設定</string>
+    <string name="routing_settings_tips">以半形逗號「,」分隔，記得儲存唷</string>
    <string name="routing_settings_save">儲存</string>
    <string name="routing_settings_delete">清除</string>
    <string name="routing_settings_scan_replace">掃描並取代</string>
    <string name="routing_settings_scan_append">掃描並附加</string>
-    <string name="routing_settings_default_rules">設置預設路由規則</string>
+    <string name="routing_settings_default_rules">設定預設轉送規則</string>

    <string name="connection_test_pending">"檢查連線能力"</string>
    <string name="connection_test_testing">"測試中……"</string>
-    <string name="connection_test_available">"成功: %d 毫秒延遲"</string>
-    <string name="connection_test_error">"偵測出網際網路連線失敗: %s"</string>
+    <string name="connection_test_available">"成功： %d 毫秒延遲"</string>
+    <string name="connection_test_error">"偵測出網際網路連線失敗：%s"</string>
    <string name="connection_test_fail">"無法使用網際網路"</string>
-    <string name="connection_test_error_status_code">"錯誤碼: （#%d）"</string>
+    <string name="connection_test_error_status_code">"錯誤碼：(#%d)"</string>
    <string name="connection_connected">"已連線，輕觸以檢查連線能力"</string>
    <string name="connection_not_connected">"未連線"</string>

    <string-array name="share_method">
-        <item>QR 碼</item>
+        <item>QR Code</item>
        <item>匯出至剪貼簿</item>
-        <item>匯出完整配置至剪貼簿</item>
+        <item>匯出完整組態至剪貼簿</item>
    </string-array>

    <string-array name="routing_tag">
@@ -180,20 +187,20 @@
    </string-array>

    <string-array name="routing_mode">
-        <item>全球</item>
+        <item>全域</item>
        <item>略過區域網路</item>
        <item>略過中國大陸</item>
        <item>略過區域網路及中國大陸</item>
    </string-array>
-    <string name="title_pref_proxy_sharing_enabled">代理共享</string>
-    <string name="summary_pref_proxy_sharing_enabled">綁定代理入口ip到0.0.0.0</string>
-    <string name="toast_warning_pref_proxysharing">其他設備可以使用socks/http協定通過您的IP地址連接到代理\nHttp 代理: http://您的ip:10809\nSocks 代理: socks(4/5)://您的ip:10808\n僅在受信任的網路中啟用以避免未經授權的連接</string>
-    <string name="toast_warning_pref_proxysharing_short">代理共享已啟用，請確保處於受信網路</string>
-    <string name="toast_malformed_josn">配置格式錯誤</string>
+    <string name="title_pref_proxy_sharing_enabled">Proxy 共用</string>
+    <string name="summary_pref_proxy_sharing_enabled">綁定 Proxy 入口 IP 到 0.0.0.0</string>
+    <string name="toast_warning_pref_proxysharing">其他裝置可以使用 socks/http 協定通過您的 IP 位址連線到 Proxy \nHttp Proxy：http://您的ip:10809\nSocks Proxy：socks(4/5)://您的ip:10808\n僅在受信任的網路中啟用以避免未經授權的連線</string>
+    <string name="toast_warning_pref_proxysharing_short">Proxy 共用已啟用，請確保處於受信網路</string>
+    <string name="toast_malformed_josn">組態格式錯誤</string>

    <string-array name="mode_entries">
        <item>VPN</item>
-        <item>僅代理</item>
+        <item>僅 Proxy</item>
    </string-array>

 </resources>
--- a/V2rayNG/app/src/main/res/values/arrays.xml
+++ b/V2rayNG/app/src/main/res/values/arrays.xml
@@ -24,11 +24,16 @@
        <item>ws</item>
        <item>h2</item>
        <item>quic</item>
+        <item>grpc</item>
    </string-array>

-    <string-array name="headertypes" translatable="false">
+    <string-array name="header_type_tcp" translatable="false">
        <item>none</item>
        <item>http</item>
+    </string-array>
+
+    <string-array name="header_type_kcp_and_quic" translatable="false">
+        <item>none</item>
        <item>srtp</item>
        <item>utp</item>
        <item>wechat-video</item>
@@ -36,18 +41,10 @@
        <item>wireguard</item>
    </string-array>

-    <string-array name="headertypetcps" translatable="false">
-        <item>none</item>
-        <item>http</item>
-    </string-array>
-
-    <string-array name="headertypekcps" translatable="false">
-        <item>none</item>
-        <item>srtp</item>
-        <item>utp</item>
-        <item>wechat-video</item>
-        <item>dtls</item>
-        <item>wireguard</item>
+    <string-array name="mode_type_grpc" translatable="false">
+        <item>gun</item>
+        <item>multi</item>
+ <!--Hide this option until core support it       <item>guna</item>-->
    </string-array>

    <string-array name="streamsecuritys" translatable="false">
@@ -135,6 +132,6 @@
        <item>196.0.0.0/6</item>
        <item>200.0.0.0/5</item>
        <item>208.0.0.0/4</item>
-        <item>224.0.0.0/3</item>
+        <item>240.0.0.0/4</item>
    </string-array>
 </resources>
--- a/V2rayNG/app/src/main/res/values/strings.xml
+++ b/V2rayNG/app/src/main/res/values/strings.xml
@@ -38,13 +38,13 @@
    <string name="server_lab_address">address</string>
    <string name="server_lab_port">port</string>
    <string name="server_lab_id">id</string>
-    <string name="server_lab_alterid">alterId</string>
    <string name="server_lab_security">security</string>
-    <string name="server_lab_network">network</string>
+    <string name="server_lab_network">Network</string>
    <string name="server_lab_more_function">more function</string>
    <string name="server_lab_head_type">head type</string>
+    <string name="server_lab_mode_type">gRPC mode</string>
    <string name="server_lab_request_host">request host(host/ws host/h2 host)/QUIC security</string>
-    <string name="server_lab_path">path(ws path/h2 path)/QUIC key</string>
+    <string name="server_lab_path">path(ws path/h2 path)/QUIC key/kcp seed/gRPC serviceName</string>
    <string name="server_lab_stream_security">tls</string>
    <string name="server_lab_allow_insecure">allowInsecure</string>
    <string name="server_lab_address3">address</string>
@@ -77,9 +77,9 @@
    <!-- Preferences -->
    <string name="title_settings">Settings</string>
    <string name="title_advanced">Advanced Settings</string>
-
+    <string name="title_vpn_settings">VPN Settings</string>
    <string name="title_pref_per_app_proxy">Per-app proxy</string>
-    <string name="summary_pref_per_app_proxy">Per-app proxy mode only support Android 5.0 Lollipop or higher</string>
+    <string name="summary_pref_per_app_proxy">General: Checked App is proxy, unchecked direct connection; \nbypass mode: checked app directly connected, unchecked proxy. \nThe option to automatically select the proxy application in the menu</string>

    <string name="title_pref_mux_enabled">Enable Mux</string>
    <string name="summary_pref_mux_enabled">Enable maybe speed up network and switch network maybe flash</string>
@@ -89,10 +89,14 @@
        usage.</string>

    <string name="title_pref_sniffing_enabled">Enable Sniffing</string>
-    <string name="summary_pref_sniffing_enabled">Sniffing</string>
+    <string name="summary_pref_sniffing_enabled">Try sniff domain from the packet (default on)</string>

    <string name="title_pref_local_dns_enabled">Enable local DNS</string>
-    <string name="summary_pref_local_dns_enabled">DNS processed by v2ray-core (BETA)</string>
+    <string name="summary_pref_local_dns_enabled">DNS processed by core‘s DNS module (Recommended, if need routing Bypassing LAN and
+        mainland address)</string>
+
+    <string name="title_pref_fake_dns_enabled">Enable fake DNS</string>
+    <string name="summary_pref_fake_dns_enabled">local DNS returns fake IP address (faster, but it may not work for some apps)</string>

    <string name="title_pref_forward_ipv6">IPv6 Route</string>
    <string name="summary_pref_forward_ipv6">Redirect IPv6 traffic to remote (BETA)</string>
@@ -109,7 +113,9 @@
    <string name="title_pref_remote_dns">Remote DNS (Optional)</string>
    <string name="summary_pref_remote_dns">DNS</string>

-    <string name="title_pref_domestic_dns">Domestic DNS (Optional, effects on LocalDNS mode)</string>
+    <string name="title_pref_vpn_dns">VPN DNS (only IPv4/v6)</string>
+
+    <string name="title_pref_domestic_dns">Domestic DNS (Optional)</string>
    <string name="summary_pref_domestic_dns">DNS</string>

    <string name="title_pref_socks_port">SOCKS5 proxy port</string>
@@ -118,6 +124,9 @@
    <string name="title_pref_http_port">HTTP proxy port</string>
    <string name="summary_pref_http_port">HTTP proxy port</string>

+    <string name="title_pref_local_dns_port">Local DNS port</string>
+    <string name="summary_pref_local_dns_port">Local DNS port</string>
+
    <string name="title_pref_feedback">Feedback</string>
    <string name="summary_pref_feedback">Feedback enhancements or bugs to GitHub</string>
    <string name="summary_pref_tg_group">Join Telegram Group</string>
--- a/V2rayNG/app/src/main/res/values/styles.xml
+++ b/V2rayNG/app/src/main/res/values/styles.xml
@@ -11,6 +11,7 @@
    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>

    <style name="AppTheme.NoActionBar.Translucent">
--- a/V2rayNG/app/src/main/res/xml/pref_settings.xml
+++ b/V2rayNG/app/src/main/res/xml/pref_settings.xml
@@ -1,6 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-    <PreferenceCategory android:title="@string/title_settings">
+    <CheckBoxPreference
+            android:key="pref_speed_enabled"
+            android:summary="@string/summary_pref_speed_enabled"
+            android:title="@string/title_pref_speed_enabled" />
+
+    <CheckBoxPreference
+            android:defaultValue="true"
+            android:key="pref_sniffing_enabled"
+            android:summary="@string/summary_pref_sniffing_enabled"
+            android:title="@string/title_pref_sniffing_enabled" />
+
+    <PreferenceCategory android:title="@string/title_vpn_settings">
        <CheckBoxPreference
            android:key="pref_per_app_proxy"
            android:summary="@string/summary_pref_per_app_proxy"
@@ -10,24 +21,26 @@
        <!--android:key="pref_mux_enabled"-->
        <!--android:summary="@string/summary_pref_mux_enabled"-->
        <!--android:title="@string/title_pref_mux_enabled" />-->
+        <CheckBoxPreference
+                android:key="pref_local_dns_enabled"
+                android:summary="@string/summary_pref_local_dns_enabled"
+                android:title="@string/title_pref_local_dns_enabled" />

        <CheckBoxPreference
-            android:key="pref_speed_enabled"
-            android:summary="@string/summary_pref_speed_enabled"
-            android:title="@string/title_pref_speed_enabled" />
+                android:key="pref_fake_dns_enabled"
+                android:summary="@string/summary_pref_fake_dns_enabled"
+                android:title="@string/title_pref_fake_dns_enabled" />

-        <CheckBoxPreference
-            android:defaultValue="true"
-            android:key="pref_sniffing_enabled"
-            android:summary="@string/summary_pref_sniffing_enabled"
-            android:title="@string/title_pref_sniffing_enabled" />
+        <EditTextPreference
+                android:key="pref_local_dns_port"
+                android:summary="10807"
+                android:inputType="number"
+                android:title="@string/title_pref_local_dns_port" />

-        <CheckBoxPreference
-            android:defaultValue="false"
-            android:key="pref_proxy_sharing_enabled"
-            android:onClick="proxySharingOnClick"
-            android:summary="@string/summary_pref_proxy_sharing_enabled"
-            android:title="@string/title_pref_proxy_sharing_enabled" />
+        <EditTextPreference
+                android:key="pref_vpn_dns"
+                android:summary="@string/summary_pref_remote_dns"
+                android:title="@string/title_pref_vpn_dns" />

    </PreferenceCategory>

@@ -40,6 +53,11 @@
            android:summary="%s"
            android:title="@string/title_pref_routing_domain_strategy" />

+        <Preference
+                android:key="pref_routing_custom"
+                android:summary="@string/title_pref_routing_custom"
+                android:title="@string/title_pref_routing_custom" />
+
        <ListPreference
            android:defaultValue="0"
            android:entries="@array/routing_mode"
@@ -47,11 +65,6 @@
            android:key="pref_routing_mode"
            android:summary="%s"
            android:title="@string/title_pref_routing_mode" />
-
-        <Preference
-            android:key="pref_routing_custom"
-            android:summary="@string/title_pref_routing_custom"
-            android:title="@string/title_pref_routing_custom" />
    </PreferenceCategory>

    <PreferenceCategory android:title="@string/title_advanced">
@@ -62,19 +75,11 @@
            android:title="@string/title_pref_forward_ipv6" />

        <CheckBoxPreference
-            android:key="pref_local_dns_enabled"
-            android:summary="@string/summary_pref_local_dns_enabled"
-            android:title="@string/title_pref_local_dns_enabled" />
-
-        <EditTextPreference
-            android:key="pref_domestic_dns"
-            android:summary="@string/summary_pref_domestic_dns"
-            android:title="@string/title_pref_domestic_dns" />
-
-        <EditTextPreference
-            android:key="pref_remote_dns"
-            android:summary="@string/summary_pref_remote_dns"
-            android:title="@string/title_pref_remote_dns" />
+                android:defaultValue="false"
+                android:key="pref_proxy_sharing_enabled"
+                android:onClick="proxySharingOnClick"
+                android:summary="@string/summary_pref_proxy_sharing_enabled"
+                android:title="@string/title_pref_proxy_sharing_enabled" />

        <Preference
            android:key="pref_socks_port"
@@ -86,6 +91,16 @@
            android:summary="10809"
            android:title="@string/title_pref_http_port" />

+        <EditTextPreference
+                android:key="pref_remote_dns"
+                android:summary="@string/summary_pref_remote_dns"
+                android:title="@string/title_pref_remote_dns" />
+
+        <EditTextPreference
+                android:key="pref_domestic_dns"
+                android:summary="@string/summary_pref_domestic_dns"
+                android:title="@string/title_pref_domestic_dns" />
+
        <ListPreference
                android:defaultValue="VPN"
                android:entries="@array/mode_entries"
--- a/V2rayNG/build.gradle
+++ b/V2rayNG/build.gradle
@@ -3,11 +3,13 @@
 buildscript {
    repositories {
        google()
-        jcenter()
+        mavenCentral()
        maven { url 'https://maven.google.com' }
+        maven { url 'https://jitpack.io' }
+        jcenter()
    }
    dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath 'com.android.tools.build:gradle:7.1.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"

        // NOTE: Do not place your application dependencies here; they belong
@@ -18,8 +20,10 @@ buildscript {
 allprojects {
    repositories {
        google()
-        jcenter()
+        mavenCentral()
        maven { url 'https://maven.google.com' }
+        maven { url 'https://jitpack.io' }
+        jcenter()
    }
 }

--- a/V2rayNG/gradle.properties
+++ b/V2rayNG/gradle.properties
@@ -13,9 +13,10 @@ org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryErro
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 #Fri Jun 02 14:08:42 CST 2017
-kotlinVersion=1.4.10
-supportLibVersion=28.0.0
-buildToolsVer=30.0.2
-compileSdkVer=30
+kotlinVersion=1.6.10
+buildToolsVer=31.0.0
+compileSdkVer=31
+targetSdkVer=31
 kotlin.incremental=true
-targetSdkVer=30
+android.useAndroidX=true
+android.enableJetifier=true
--- a/V2rayNG/gradle/wrapper/gradle-wrapper.properties
+++ b/V2rayNG/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip
Author	SHA1	Message	Date
2dust	8ed17f9da0	Merge pull request #1446 from pozhiloy-enotik/patch-1 Allow external use	2022-04-15 07:21:23 +08:00
pozhiloy-enotik	1bbfda64fe	Allow external use	2022-04-12 16:18:34 +03:00
2dust	5cadef8b2a	Merge pull request #1416 from yuhan6665/master Refactor and remove Kotlin synthetics	2022-03-20 10:16:16 +08:00
yuhan6665	5b92158353	Update readme	2022-03-19 21:27:26 -04:00
yuhan6665	73706c1d0f	Refactor and remove Kotlin synthetics	2022-03-19 21:21:44 -04:00
2dust	c633a267ff	Merge pull request #1393 from yuhan6665/master Update readme and sync project	2022-02-27 08:55:34 +08:00
yuhan6665	c8e5bf4f9f	Update project	2022-02-26 12:15:46 -05:00
2dust	bb91b3baa9	onModeHelpClicked	2022-02-26 12:05:02 -05:00
2dust	35dc8d661c	Update AndroidManifest.xml	2022-02-26 12:05:02 -05:00
2dust	f61f30fdc4	change sdk version	2022-02-26 12:05:02 -05:00
2dust	a54c327a07	Merge pull request #1374 from Kaitul/patch-1 Update strings.xml	2022-02-26 19:21:22 +08:00
人工知能	87d2854fb2	Update strings.xml	2022-02-15 12:48:44 +08:00
2dust	e9b1052ef7	Merge pull request #1336 from yuhan6665/remove-alterid Remove alterid	2022-01-09 18:04:08 +08:00
yuhan6665	c6560e9bc0	Remove alterId field VmessQRCode "aid" is kept for backwards compatibility and always set to 0 Since 2022, new *ray server will reject alterId > 0. If it is enabled and set specifically > 0, for v2fly server v4.28.1+ and Xray server v1.0.0+, client with either 0 or above 0 can connect For older v2ray server, the default config will not work, user has to use custom config to set alterId. This is NOT recommended for security reason	2022-01-07 18:30:11 -05:00
yuhan6665	a44ca16aa7	Fix some compile warnings	2022-01-07 18:30:11 -05:00
2dust	b28c7f54ff	Merge pull request #1333 from xiandanin/master 更新xray-core版本	2022-01-06 19:37:50 +08:00
xiandanin	61a155b799	更新xray-core版本	2022-01-05 20:25:45 +08:00
2dust	10cc117e81	Merge pull request #1268 from yuhan6665/new-fakedns New config format	2021-10-30 19:02:26 +08:00
yuhan6665	ce9bed2e1f	New config format	2021-10-29 20:37:12 -04:00
2dust	bb8f7de6eb	Merge pull request #1263 from yuhan6665/new-dns Add support for DOT and DOQ	2021-10-24 19:51:47 +08:00
yuhan6665	a1ed4836c7	Add support for DOT and DOQ	2021-10-23 20:24:08 -04:00
2dust	2d5351ec9e	Merge pull request #1218 from yuhan6665/fix-sniffing2 Fix sniffing default value again	2021-09-07 20:02:52 +08:00
yuhan6665	d9fb121d67	Fix sniffing default value again I made a mistake, thought it would return null when key is not in storage, But it is found default "true" must be specified	2021-09-03 18:15:06 -04:00
2dust	62d0951a24	Merge pull request #1208 from yuhan6665/fix-viewpager Fix an issue with ViewPage2 and menu bar	2021-08-28 17:06:21 +08:00
2dust	d6605cc866	Merge pull request #1204 from douo/master Add support in subscription url for http basic authentication.	2021-08-28 17:06:10 +08:00
yuhan6665	1fc493d879	Fix an issue with ViewPage2 and menu bar	2021-08-27 17:48:45 -04:00
tiou	bdc27dd180	Use built-in urlDecode.	2021-08-23 16:58:48 +08:00
tiou	e257c4cb56	Subscription support http basic authentication in url.	2021-08-23 16:49:35 +08:00
2dust	e9d2ed98af	Merge pull request #1198 from yuhan6665/user-agent Set user agent to v2rayNG/version when update subscription	2021-08-21 19:19:20 +08:00
yuhan6665	901a82eb54	Set user agent to v2rayNG/version when update subscription	2021-08-20 18:29:34 -04:00
2dust	26cc29944b	Merge pull request #1183 from yuhan6665/fix-drag Fix a bug when user delete item right after drag it	2021-08-17 20:20:56 +08:00
yuhan6665	7052546f2b	Fix a bug when user delete item right after drag it	2021-08-13 18:04:43 -04:00
2dust	ae2b10ede7	Merge pull request #1177 from yuhan6665/fix-base64 Fix parsing for some loosely formatted base64	2021-08-10 13:09:35 +08:00
2dust	0df051e640	Merge pull request #1175 from jiuqianyuan/master Add prompts for update subscription error	2021-08-10 13:06:14 +08:00
jiuqianyuan	79aa86a402	Update MainActivity.kt	2021-08-09 17:22:49 +08:00
yuhan6665	7bf32c2b30	Fix parsing for some loosely formatted base64	2021-08-07 17:35:09 -04:00
jiuqianyuan	ceb1c55e49	Fix missing prompts for update subscription error	2021-08-07 08:08:45 +08:00
2dust	4ab3134eac	Merge pull request #1164 from yuhan6665/update Fix compile warnings	2021-07-31 15:38:19 +08:00
yuhan6665	0391685d42	Fix some more compile warnings	2021-07-30 18:31:29 -04:00
yuhan6665	6482253697	Fix some compile warnings remove flatDir	2021-07-30 18:31:29 -04:00
yuhan6665	c033358126	Fix some compile warnings Migrate to Androidx Activity Result APIs	2021-07-30 18:31:29 -04:00
yuhan6665	0b52c78b72	Fix some compile warnings Some deprecated methods	2021-07-30 18:31:29 -04:00
yuhan6665	a2a7d790e7	Fix some compile warnings Migrate to viewpager2	2021-07-30 18:31:29 -04:00
yuhan6665	c7c6564624	Fix some compile warnings upper case and lower case	2021-07-30 18:31:29 -04:00
2dust	f7d534fc00	Merge pull request #1153 from yuhan6665/update Migrate to View Binding	2021-07-26 08:07:28 +08:00
yuhan6665	ecb1d58e7a	Migrate to View Binding Use view binding to simplify some code	2021-07-23 18:17:17 -04:00
2dust	54a191d181	Merge pull request #1147 from yuhan6665/update Update project dependencies	2021-07-20 08:12:30 +08:00
2dust	90b6979f94	Merge pull request #1146 from jiuqianyuan/master fix update subscription error	2021-07-20 08:12:18 +08:00
jiuqianyuan	5daf4886b7	fix wrong commit wrong commit for `dbee208`	2021-07-17 16:18:33 +08:00
jiuqianyuan	dbee2085fb	clean useless “”	2021-07-17 15:58:29 +08:00
yuhan6665	3c6c4ca3a5	Update project dependencies	2021-07-16 18:11:28 -04:00
jiuqianyuan	3932ee6e9b	fix update subscription error Prevent server list from being emptied when update subscription failed or the subscription url is invalid	2021-07-16 17:49:56 +08:00
2dust	242c96a4de	Merge pull request #1136 from yuhan6665/EditorKit Editor kit	2021-07-14 08:26:14 +08:00
yuhan6665	a23245435f	Use EditorKit for custom config https://github.com/massivemadness/Squircle-IDE	2021-07-09 20:45:48 -04:00
yuhan6665	57476290d3	Auto Migrate to AndroidX	2021-07-09 20:44:38 -04:00
2dust	c5617ac65a	Merge pull request #1129 from yuhan6665/fix-host Fix host should be empty list when it is blank	2021-07-03 16:48:12 +08:00
yuhan6665	3795348b04	Fix host should be empty list when it is blank	2021-07-02 17:40:15 -04:00
2dust	50bf9c8da0	Merge pull request #1116 from yuhan6665/fix-base64 Fix base64-url-safe format decode	2021-06-27 11:52:20 +08:00
yuhan6665	78fe4e4bc4	Fix base64-url-safe format decode	2021-06-26 19:44:21 -04:00
2dust	962519854d	Merge pull request #1092 from yuhan6665/Logtag Log with consistent tag	2021-06-13 19:53:46 +08:00
yuhan6665	841629f9a3	Cleanup some files	2021-06-12 23:38:31 -04:00
yuhan6665	d32ccc817a	Log with consistent tag	2021-06-12 23:38:31 -04:00
2dust	19cc665f2d	Merge pull request #1088 from yuhan6665/import-fix Fix a null pointer when subscribe link doesn't have sni field	2021-06-07 08:17:13 +08:00
yuhan6665	031e9105e2	Fix a null pointer when subscribe link doesn't have sni field	2021-06-06 11:18:58 -04:00
2dust	35c5d64863	Merge pull request #1070 from yuhan6665/bypass-fix bypass local also bypass multicast address	2021-05-29 10:29:25 +08:00
yuhan6665	0b05756d12	bypass local also bypass multicast address https://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml	2021-05-28 19:51:08 -04:00
2dust	3548dcbb67	Merge pull request #1065 from yuhan6665/domestic Always add domestic dns to config	2021-05-24 08:14:43 +08:00
yuhan6665	b897b2a0e9	Always add domestic dns to config Previously, domestic dns is only added to config under "local dns mode". However, it should be used for V2ray core routing DNS as well.	2021-05-23 11:56:23 -04:00
2dust	eb60e4a0e4	Merge pull request #1058 from yuhan6665/grpc Grpc	2021-05-16 19:35:16 +08:00
yuhan6665	c3dfa8cedc	Support gRPC import and export New Format https://github.com/XTLS/Xray-core/issues/91 For Vmess QRcode https://github.com/2dust/v2rayN/wiki/%E5%88%86%E4%BA%AB%E9%93%BE%E6%8E%A5%E6%A0%BC%E5%BC%8F%E8%AF%B4%E6%98%8E(ver-2) gRPC mode is mapped to "type"	2021-05-15 23:18:09 -04:00
yuhan6665	f58bf85b6d	Update UI for gRPC Separate transport header types for different networks Change UI dynamically based on user selection of network	2021-05-15 23:04:58 -04:00
2dust	906d0714b5	Merge pull request #1050 from yuhan6665/fakedns Fakedns	2021-05-08 11:28:42 +08:00
yuhan6665	701fed2525	Update settings UI, add new VPN section	2021-05-07 21:55:44 -04:00
yuhan6665	e83208465f	Add vpn dns preference setting Vpn Dns can now be changed separately from remote Dns	2021-05-07 21:17:11 -04:00
yuhan6665	2b031033d3	Add fake dns preference setting	2021-05-07 20:55:02 -04:00
2dust	e0e16b5934	fix tcp http request	2021-05-07 20:50:52 -04:00
2dust	0748f994ef	Merge pull request #1038 from yuhan6665/new-storage-fix New storage fix	2021-05-01 18:20:11 +08:00
yuhan6665	233b34bda6	Fix scrolling by cache server config in ViewModel	2021-04-30 20:17:41 -04:00
yuhan6665	6ece3385fe	Fix trojan sni saved as null when it should be empty	2021-04-30 20:17:41 -04:00
2dust	9b8a810445	Merge pull request #1028 from yuhan6665/master Update tun2socks	2021-04-26 08:22:47 +08:00
yuhan6665	f63242d147	Update tun2socks `60a66a363f` compiled with NDK 22.1.7171670	2021-04-25 19:56:14 -04:00
2dust	7024fabb82	Merge pull request #1016 from yuhan6665/new-storage-fix Fix data migration sniff setting default to true	2021-04-17 10:24:19 +08:00
2dust	459f52fec6	Merge pull request #1015 from yuhan6665/xray Update AndroidLibrayLite project to Xray	2021-04-17 10:24:10 +08:00
yuhan6665	90f2d33d97	Fix data migration sniff setting default to true	2021-04-16 20:33:59 -04:00
yuhan6665	115008a8a4	Update AndroidLibrayLite project to Xray	2021-04-16 09:17:58 -04:00
2dust	8cdc7fb3c9	Merge pull request #1001 from yuhan6665/new-storage-fix Rollback parsed custom config	2021-04-11 19:28:47 +08:00
yuhan6665	d0a2fa0086	Rollback parsed custom config To minimize change, the data structure for ServerConfig still stay the same Add another table for server raw config	2021-04-10 21:30:34 -04:00
2dust	f6c54841d2	Merge pull request #990 from yuhan6665/new-storage-fix New storage fix	2021-04-05 20:21:51 +08:00
yuhan6665	54fa356999	Add some new config for v2fly 4.37.0	2021-04-04 19:25:52 -04:00
2dust	9642b7f64f	up grpc	2021-04-04 19:25:52 -04:00
yuhan6665	dd2d2c1638	Add some missing config from Xray	2021-04-04 19:25:51 -04:00
yuhan6665	e21950dbcd	Improve custom config error toast	2021-04-04 19:25:51 -04:00