Fix Android bugs (#941)

* Add an explicit value for the hasFragileUserData parameter

* Fix app crashes when canceling file opening

* Fix requestNetwork bug for Android 11

* Fix activity onStop method

client/android/AndroidManifest.xml

@@ -38,6 +38,7 @@
         android:theme="@style/NoActionBar"
         android:fullBackupContent="@xml/backup_content"
         android:dataExtractionRules="@xml/data_extraction_rules"
+        android:hasFragileUserData="false"
         tools:targetApi="s">
 
         <activity

client/android/src/org/amnezia/vpn/AmneziaActivity.kt

@@ -231,7 +231,10 @@ class AmneziaActivity : QtActivity() {
     override fun onStop() {
         Log.d(TAG, "Stop Amnezia activity")
         doUnbindService()
+        mainScope.launch {
+            qtInitialized.await()
             QtAndroidController.onServiceDisconnected()
+        }
         super.onStop()
     }
 
@@ -543,7 +546,7 @@ class AmneziaActivity : QtActivity() {
                 }
             }.also {
                 startActivityForResult(it, OPEN_FILE_ACTION_CODE, ActivityResultHandler(
-                    onSuccess = {
+                    onAny = {
                         val uri = it?.data?.toString() ?: ""
                         Log.d(TAG, "Open file: $uri")
                         mainScope.launch {

client/android/utils/src/main/kotlin/net/NetworkState.kt

@@ -88,18 +88,26 @@ class NetworkState(
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
             connectivityManager.registerBestMatchingNetworkCallback(networkRequest, networkCallback, handler)
         } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val numberAttempts = 3
+            var attemptCount = 0
+            while(true) {
                 try {
                     connectivityManager.requestNetwork(networkRequest, networkCallback, handler)
+                    break
                 } catch (e: SecurityException) {
                     Log.e(TAG, "Failed to bind network listener: $e")
                     // Android 11 bug: https://issuetracker.google.com/issues/175055271
                     if (e.message?.startsWith("Package android does not belong to") == true) {
+                        if (++attemptCount > numberAttempts) {
+                            throw e
+                        }
                         delay(1000)
-                    connectivityManager.requestNetwork(networkRequest, networkCallback, handler)
+                        continue
                     } else {
                         throw e
                     }
                 }
+            }
         } else {
             connectivityManager.requestNetwork(networkRequest, networkCallback)
         }