From 516235cd6a46716a92db9fde3afc17f0f88b1a68 Mon Sep 17 00:00:00 2001
From: zhaoguomanong <zhaoguomanong@gmail.com>
Date: Fri, 9 Sep 2022 11:20:51 +0800
Subject: [PATCH] fix NullPointerException
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

复现方法:
添加两个订阅A, B -> 选择A中任意节点并启动 -> 删除A订阅, 选中B订阅中任意节点启动 -> crash

09-09 10:53:50.355 18739 18739 D AndroidRuntime: Shutting down VM
09-09 10:53:50.356 18739 18739 E AndroidRuntime: FATAL EXCEPTION: main
09-09 10:53:50.356 18739 18739 E AndroidRuntime: Process: com.v2ray.ang, PID: 18739
09-09 10:53:50.356 18739 18739 E AndroidRuntime: java.lang.NullPointerException
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at com.v2ray.ang.ui.MainRecyclerAdapter.onBindViewHolder$lambda-6(MainRecyclerAdapter.kt:156)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at com.v2ray.ang.ui.MainRecyclerAdapter.$r8$lambda$VmDbsAxtrWNiVtS0BmO3UDui2o4(Unknown Source:0)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at com.v2ray.ang.ui.MainRecyclerAdapter$$ExternalSyntheticLambda2.onClick(Unknown Source:4)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.view.View.performClick(View.java:6597)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.view.View.performClickInternal(View.java:6574)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.view.View.access$3100(View.java:778)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.view.View$PerformClick.run(View.java:25906)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.os.Handler.handleCallback(Handler.java:873)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:99)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:193)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at android.app.ActivityThread.main(ActivityThread.java:6718)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at java.lang.reflect.Method.invoke(Native Method)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
09-09 10:53:50.356 18739 18739 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Signed-off-by: zhaoguomanong <zhaoguomanong@gmail.com>
---
 .../src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
index b3f2f80d..310d3af7 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
@@ -2,6 +2,7 @@ package com.v2ray.ang.ui
 
 import android.content.Intent
 import android.graphics.Color
+import android.text.TextUtils
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
@@ -153,7 +154,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                 val selected = mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
                 if (guid != selected) {
                     mainStorage?.encode(MmkvManager.KEY_SELECTED_SERVER, guid)
-                    notifyItemChanged(mActivity.mainViewModel.getPosition(selected!!))
+                    if (!TextUtils.isEmpty(selected)) {
+                        notifyItemChanged(mActivity.mainViewModel.getPosition(selected!!))
+                    }
                     notifyItemChanged(mActivity.mainViewModel.getPosition(guid))
                     if (isRunning) {
                         mActivity.showCircle()