title: Flutter Show Notification when app is open with Firebase Messaging
body: <p>the app receives all the notification that I have sent in the background or closed mode, but I also want to show the notification when the app is opened while user playing with the app.</p>
  
  <pre><code>      onMessage: (Map&lt;String, dynamic&gt; message) async {
          print("onMessage: $message");
          FlutterRingtonePlayer.playNotification();
        },
        onLaunch: (Map&lt;String, dynamic&gt; message) async {
          print("onLaunch: $message");
  
        },
        onResume: (Map&lt;String, dynamic&gt; message) async {
          print("onResume: $message");
          // TODO optional
        },
  
  </code></pre>