Add PendingIntentFlags.Immutable to DefaultPushNotificationHandler.android;

Author: Stoyan Troshanov

Plugin.FirebasePushNotification/DefaultPushNotificationHandler.android.cs

@@ -358,7 +358,7 @@ public virtual void OnReceived(IDictionary<string, object> parameters)
             }
             var requestCode = new Java.Util.Random().NextInt();
 
-            var pendingIntent = PendingIntent.GetActivity(context, requestCode, resultIntent, PendingIntentFlags.UpdateCurrent);
+            var pendingIntent = PendingIntent.GetActivity(context, requestCode, resultIntent, PendingIntentFlags.UpdateCurrent | PendingIntentFlags.Immutable);
 
             if (parameters.TryGetValue(ChannelIdKey, out var channelId) && channelId != null)
             {
@@ -387,7 +387,7 @@ public virtual void OnReceived(IDictionary<string, object> parameters)
 
             var deleteIntent = new Intent(context, typeof(PushNotificationDeletedReceiver));
             deleteIntent.PutExtras(extras);
-            var pendingDeleteIntent = PendingIntent.GetBroadcast(context, requestCode, deleteIntent, PendingIntentFlags.CancelCurrent);
+            var pendingDeleteIntent = PendingIntent.GetBroadcast(context, requestCode, deleteIntent, PendingIntentFlags.CancelCurrent | PendingIntentFlags.Immutable);
             notificationBuilder.SetDeleteIntent(pendingDeleteIntent);
 
             if (Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.O)
@@ -503,15 +503,15 @@ public virtual void OnReceived(IDictionary<string, object> parameters)
 
                                     extras.PutString(ActionIdentifierKey, action.Id);
                                     actionIntent.PutExtras(extras);
-                                    pendingActionIntent = PendingIntent.GetActivity(context, aRequestCode, actionIntent, PendingIntentFlags.UpdateCurrent);
+                                    pendingActionIntent = PendingIntent.GetActivity(context, aRequestCode, actionIntent, PendingIntentFlags.UpdateCurrent | PendingIntentFlags.Immutable);
 
                                 }
                                 else
                                 {
                                     actionIntent = new Intent(context, typeof(PushNotificationActionReceiver));
                                     extras.PutString(ActionIdentifierKey, action.Id);
                                     actionIntent.PutExtras(extras);
-                                    pendingActionIntent = PendingIntent.GetBroadcast(context, aRequestCode, actionIntent, PendingIntentFlags.UpdateCurrent);
+                                    pendingActionIntent = PendingIntent.GetBroadcast(context, aRequestCode, actionIntent, PendingIntentFlags.UpdateCurrent | PendingIntentFlags.Immutable);
 
                                 }