Flutter Firebase Push Notification unable to data if app is not launched

Question

I am using Flutter for my code. For push notification, I am using Firebase Push Notification ("firebase_messaging" version 9.1.3).

I am facing the following issue:

• I am able to receive Push Notification for both Android and iOS from the server.
• If I have launched the app and then put the app in the background, when I click the notification message from the home screen, my app will launch (from background) and I am able to extract the payload data.
• If I have not launched the app, when I click the notification message from the Home Screen, my app will load but I am not able to extract the payload data.

Below is my code that listen to the message (referencing from Flutter example).

FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
  //Process received message 
  _processMessage(message);
});

What am I missing to enable the app to receive the notification payload if it launched fresh.

Answer 1

As far as I remember, onMessageOpenedApp is only triggered when the app is launched from the background state.

For receiving notification payload when launching from the terminated state, you have to use getInitialMessage() method.

More on that can be found here.