push_notification_service_v1.dart

import 'package:firebase_messaging/firebase_messaging.dart';

class PushNotificationService {
  final FirebaseMessaging _fcm;

  PushNotificationService(this._fcm);

  Future initialise() async {
    if (Platform.isIOS) {
      _fcm.requestNotificationPermissions(IosNotificationSettings());
    }

    // If you want to test the push notification locally,
    // you need to get the token and input to the Firebase console
    // https://console.firebase.google.com/project/YOUR_PROJECT_ID/notification/compose
    String token = await _fcm.getToken();
    print("FirebaseMessaging token: $token");

    _fcm.configure(
      onMessage: (Map<String, dynamic> message) async {
        print("onMessage: $message");
      },
      onLaunch: (Map<String, dynamic> message) async {
        print("onLaunch: $message");
      },
      onResume: (Map<String, dynamic> message) async {
        print("onResume: $message");
      },
    );
  }
}

Hey Yong, I'm reading your great tutorial at https://medium.com/comerge/implementing-push-notifications-in-flutter-apps-aef98451e8f1 - but the Platform reference is causing trouble in my IDE. Should this gist use import 'dart:io'; at the top to enable access to this class? Thanks! Paul G - Melbourne

Yes @ok200paul, you should use import 'dart:io' to resolve the Platform reference issue found in this gist.

Brilliant, thanks so much @victorkarangwa4!

If the application is closed, the notification does not appear

_fcm.requestNotificationPermissions and _fcm.configure are undefined. Using flutter_messaging 10.0.3, also IosNotificationSettings doesn't resolve to any library.

https://firebase.flutter.dev/docs/migration/ There is something updated.