diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
index ea3ac4b3..080858a7 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
@@ -165,8 +165,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                     importBatchConfig(data?.getStringExtra("SCAN_RESULT"))
                 }
             REQUEST_FILE_CHOOSER -> {
-                if (resultCode == RESULT_OK) {
-                    val uri = data!!.data
+                val uri = data?.data
+                if (resultCode == RESULT_OK && uri != null) {
                     readContentFromUri(uri)
                 }
             }
@@ -460,9 +460,10 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                 .subscribe {
                     if (it) {
                         try {
-                            val inputStream = contentResolver.openInputStream(uri)
-                            val configText = inputStream.bufferedReader().readText()
-                            importCustomizeConfig(configText)
+                            contentResolver.openInputStream(uri).use {
+                                val configText = it?.bufferedReader()?.readText()
+                                importCustomizeConfig(configText)
+                            }
                         } catch (e: Exception) {
                             e.printStackTrace()
                         }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScannerActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScannerActivity.kt
index 5e019309..eff431da 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScannerActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ScannerActivity.kt
@@ -119,10 +119,10 @@ class ScannerActivity : BaseActivity(), ZXingScannerView.ResultHandler {
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         when (requestCode) {
-            REQUEST_FILE_CHOOSER ->
-                if (resultCode == RESULT_OK) {
+            REQUEST_FILE_CHOOSER -> {
+                val uri = data?.data
+                if (resultCode == RESULT_OK && uri != null) {
                     try {
-                        val uri = data!!.data
                         val bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri))
                         val text = QRCodeDecoder.syncDecodeQRCode(bitmap)
                         finished(text)
@@ -131,6 +131,7 @@ class ScannerActivity : BaseActivity(), ZXingScannerView.ResultHandler {
                         toast(e.message.toString())
                     }
                 }
+            }
         }
     }
 }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
index 1a403778..a4960039 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
@@ -95,7 +95,7 @@ object Utils {
         try {
             val cmb = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
             val clipData = ClipData.newPlainText(null, content)
-            cmb.primaryClip = clipData
+            cmb.setPrimaryClip(clipData)
         } catch (e: Exception) {
             e.printStackTrace()
         }