Call onMessage method when the app is in background in flutter

Question

I\'m new in flutter and dart. I\'m trying to connect my app with FCM. When app is in foreground I create flutterLocalNotificationsPlugin and everything works fine, but I don

Answer 1

To handle a message in the background add firebase-messaging implementation to dependencies bracket.

Future myBackgroundMessageHandler(Map message) {
  if (message.containsKey('data')) {
    // Handle data message
    final dynamic data = message['data'];
  }

  if (message.containsKey('notification')) {
    // Handle notification message
    final dynamic notification = message['notification'];
  }

  // Or do other work.
}

And call it in your configure on onBackgroundMessage

 _firebaseMessaging.configure(
  onMessage: (Map message) async {
    print("onMessage: $message");
    _showItemDialog(message);
  },
  onBackgroundMessage: myBackgroundMessageHandler,
  onLaunch: (Map message) async {
    print("onLaunch: $message");
    _navigateToItemDetail(message);
  },
  onResume: (Map message) async {
    print("onResume: $message");
    _navigateToItemDetail(message);
  },
);