How to send Firebase Push Notifications to Flutter app

We can use Firebase cloud messaging feature to send push notifications fro our flutter apps.

First off, head over to the firebase_messaging package home, to see how to set it up and explore more.

In your pubspec.yaml file, import this:

firebase_messaging: any

Create a new Dart file, paste this code:

import 'package:flutter/material.dart';
import 'package:firebase_messaging/firebase_messaging.dart';

class FirebaseNotification extends StatefulWidget {
  @override
  _FirebaseNotificationState createState() => _FirebaseNotificationState();
}

class _FirebaseNotificationState extends State<FirebaseNotification> {
  final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
  GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();

  @override
  void initState() {
    super.initState();
    initNotifications();
  }

  initNotifications() {
    _firebaseMessaging.configure(onMessage: (data) {
      if (data != null) {
        _scaffoldKey.currentState
            .showSnackBar(SnackBar(content: Text("Notification received")));
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(title: Text('Firebase Notification Example')),
      body: Center(child: Text("Main Page")),
    );
  }
}

In main.dart:

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Code Snippets',
      theme: new ThemeData(primarySwatch: Colors.red),
      home: new FirebaseNotification(),
    );
  }
}

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