ANR error after receiving the first push notification when combine FCM for android and Push for IOS

[javier-gantri]

Steps: 1 - create an empty flutter project (3.16.9) 2 - flutter pub add firebase_core firebase_messaging push 3 - configure android build.gradle 4 - add basic subscription for push message 5 - run android project 6 - sent a push notification using firebase cloud

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

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final FirebaseMessaging _firebaseMessaging = FirebaseMessaging.instance;

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

    _firebaseMessaging.requestPermission();

    FirebaseMessaging.instance.getInitialMessage();

    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
      print(message);
      print('OnMessage');
    });

    FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
      print(message);
      print('OnMessageOpened');
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Container(),
    );
  }
}