Flutter Firebase消息传递触发器onLaunch

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

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Firebase FCM Example')),
        body: Center(child: Text('Waiting for FCM...')),
      ),
    );
  }
}

class MyFirebaseMessagingService extends FirebaseMessagingService {
  @override
  void onLaunch(Map<String, dynamic> message) async {
    print('onLaunch: $message');
    // 处理 onLaunch 事件
  }

  @override
  void onMessage(Map<String, dynamic> message) async {
    print('onMessage: $message');
    // 处理 onMessage 事件
  }

  @override
  void onBackgroundMessage(Map<String, dynamic> message) async {
    print('onBackgroundMessage: $message');
    // 处理后台消息
  }
}