Can't Read Data of Notification Message - Flutter - flutter

Question

I used postman for Creating a Notification.Also I used Firebase Cloud Messaging as backend.
All works, even Notification pops in the android. But I can't read the data in my debug console ,
the Following errors are shown in console:
D/FLTFireMsgReceiver(23051): broadcast received for message
W/FLTFireMsgService(23051): A background message could not be handled in Dart as no onBackgroundMessage handler has been registered.
W/FirebaseMessaging(23051): Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
The Codes of the Push Notification class:
import 'dart:io';
import 'package:cholachol_drive/globalvariables.dart';
import 'package:firebase_database/firebase_database.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
class PushNotificationService {
// final FirebaseMessaging fcm = FirebaseMessaging.instance;
Future initialize(context) async {
FirebaseMessaging.onMessage.listen((event) {
(Map<String, dynamic> message) async {
// retrieveRideRequestInfo(getRideRequestId(message), context);
print("onMessage: $message");
if (Platform.isAndroid) {
String rideID = message["data"]['ride_id'];
if (rideID != null) {
print("Fucked");
} else {
print('ride_id: $rideID');
}
}
};
});
FirebaseMessaging.onMessageOpenedApp.listen((event) {
(Map<String, dynamic> message) async {
// retrieveRideRequestInfo(getRideRequestId(message), context);
print("onLaunch: $message");
if (Platform.isAndroid) {
String rideID = message["data"]['ride_id'];
if (rideID != null) {
print("Fucked");
} else {
print('ride_id: $rideID');
}
}
};
});
}
Future<String> getToken() async {
String token = await FirebaseMessaging.instance.getToken();
print("token: $token");
DatabaseReference tokerRef = FirebaseDatabase.instance
.ref()
.child("drivers/${currentFirebaseUser.uid}/token");
FirebaseMessaging.instance.subscribeToTopic('alldrivers');
FirebaseMessaging.instance.subscribeToTopic('allusers');
}
}

Answer 1

It seems you don't have onBackgroundMessage implemented in your app. You need to use onBackgroundMessage in order to handle background messages. onMessage will only handle foreground messages.