Flutter FCM 7 on iOS 14

Question

For everyone who goes crazy from FCM after updating to iOS14 & Xcode12. I spent 2 days resolving the issues. On the simulator, it works but on a real device, it does not. Maybe these instructions can help someone & prevent wasting the time. Also, it would be great to listen to some thoughts from Flutter Guru if all these steps can be improved :).

Notice: Instructions for new FCM versions 9+

XCode Settings

AppDelegate.swift

import UIKit import Flutter import GoogleMaps import Firebase import FirebaseMessaging  @UIApplicationMain @objc class AppDelegate: FlutterAppDelegate {   override func application(     _ application: UIApplication,     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?   ) -> Bool {     if #available(iOS 10.0, *) {       UNUserNotificationCenter.current().delegate = self as UNUserNotificationCenterDelegate     }     GMSServices.provideAPIKey("")     GeneratedPluginRegistrant.register(with: self)     application.registerForRemoteNotifications()     return super.application(application, didFinishLaunchingWithOptions: launchOptions)   }      override func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {         Auth.auth().setAPNSToken(deviceToken, type: .prod)     }      override func application(_ application: UIApplication,         didReceiveRemoteNotification notification: [AnyHashable : Any],         fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {         if Auth.auth().canHandleNotification(notification) {           completionHandler(.noData)           return         }     }      override func application(_ application: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any]) -> Bool {         if Auth.auth().canHandle(url) {           return true         }         return false;       } }  

Info.plist

    <key>FirebaseAppDelegateProxyEnabled</key>     <false/>     <key>FirebaseScreenReportingEnabled</key>     <true/> 

Message Example (Callable function)

Your message must be sent with these options:

{    mutableContent: true,    contentAvailable: true,    apnsPushType: "background" } 

Just an example to use in callable function

exports.sendNotification = functions.https.onCall(     async (data) => {         console.log(data, "this sendNotification data");         var userTokens = [USERTOKEN1,USERTOKEN2,USERTOKEN3];         var payload = {             notification: {                 title: '',                 body: '',                 image: '',             },             data: {                 type:'',             },         };                  for (const [userToken,userUID] of Object.entries(userTokens)) {             admin.messaging().sendToDevice(userToken, payload, {                 mutableContent: true,                 contentAvailable: true,                 apnsPushType: "background"             });         }                  return {code: 100, message: "notifications send successfully"};     }); 

Flutter Message Service

import 'dart:io'; import 'package:hive/hive.dart'; import 'package:firebase_messaging/firebase_messaging.dart'; import 'package:flutter_local_notifications/flutter_local_notifications.dart'; import 'package:octopoos/providers/app.dart';  Future<dynamic> backgroundMessageHandler(Map<String, dynamic> message) async {}  class FirebaseMessagingService {   final _app = AppProvider();   var _prefs = Hive.box('preferences');   FirebaseMessaging _firebaseMessaging = FirebaseMessaging();   FlutterLocalNotificationsPlugin _flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();    void initialise() {     var android = AndroidInitializationSettings('mipmap/ic_launcher');     var ios = IOSInitializationSettings();     var platform = InitializationSettings(android, ios);     _flutterLocalNotificationsPlugin.initialize(platform);      _firebaseMessaging.configure(       onLaunch: (Map<String, dynamic> message) async {         _app.storeNotification(message);       },       onResume: (Map<String, dynamic> message) async {         _app.storeNotification(message);       },       onMessage: (Map<String, dynamic> message) async {         _app.storeNotification(message);         if (_prefs.get('pushServiceState') == true) _showNotification(message);       },       onBackgroundMessage: Platform.isIOS ? null : backgroundMessageHandler,     );      if (Platform.isIOS) iOSPermission();     _firebaseMessaging.getToken().then((token) {       _prefs.put('fcmToken', token);     });   }    void iOSPermission() {     _firebaseMessaging.requestNotificationPermissions(         IosNotificationSettings(sound: true, badge: true, alert: true, provisional: true));     _firebaseMessaging.onIosSettingsRegistered.listen((IosNotificationSettings settings) {       print('IOS Setting Registed');     });   }    Future<void> _showNotification(Map<String, dynamic> message) async {     var android = AndroidNotificationDetails(       'messages',       "Octopoos",       "channelDescription",     );     var iOS = IOSNotificationDetails();      await _flutterLocalNotificationsPlugin.show(       0,       message['notification']['title'],       message['notification']['body'],       NotificationDetails(android, iOS),     );   } } 

Call on widget

final FirebaseMessagingService _fcm = FirebaseMessagingService();    @override   void afterFirstLayout(BuildContext context) {     _fcm.initialise();   }  

Only after all these steps, my FCM work correctly.

Answer 1

can u try sample payload if it works.

it is stated here

let payload = {         notification: {             title: 'Match',             body: `${user2name} Match with You`,          },         data: {             key: 'Match',             id: user2,             body: user2name,             click_action: "FLUTTER_NOTIFICATION_CLICK"         },         android: {             priority: "high",         },         apns: {             payload: {                 aps: {                     contentAvailable: true,                 },             },             headers: {                 "apns-push-type": "background",                 "apns-priority": "5", // Must be `5` when `contentAvailable` is set to true.                 "apns-topic": "io.flutter.plugins.firebase.messaging", // bundle identifier             },         },          token: deviceTokenuUser1.data()['tokens'],     };