[Firebase_messaging] : version 8.0.0-dev.7 unable to hit message handler functions. #4054

cgonzalezandrades · 2020-11-07T05:22:48Z

Im unable to hit the message handle functions when sending a notification from Firebase cloud messaging console.

Send message from firebase console.
put print statements in message handler functions like onBackgroundMessage, onMessageOpenedApp and onMessage.listen

I was able to send notifications with the new version deployment (8.0.0-dev.7) in IOS . I can see the notification in IOS physical device but when I click the notification I dont see the print logs Im setting in the message handler functions.

Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  print('message from background handler');
  print("Handling a background message: ${message.messageId}");
}`

@override
  void didChangeDependencies() async {
    if (!_isInit) {
      // FirebaseMessaging.onBackgroundMessage(
      //     _firebaseMessagingBackgroundHandler);
      // FirebaseMessaging messaging = FirebaseMessaging.instance;
      FirebaseMessaging.instance.getToken().then((value) {
        print(value);
      });

      FirebaseMessaging.onMessageOpenedApp.listen((event) {
        print('hey');
        print(event);
      });

      FirebaseMessaging.onBackgroundMessage(
          _firebaseMessagingBackgroundHandler);

      FirebaseMessaging.onMessage.listen((RemoteMessage message) {
  
        print('Got a message whilst in the foreground!');
        print('Message data: ${message.data}');

        if (message.notification != null) {
          print(
              'Message also contained a notification: ${message.notification}');
        }
      });

    }

    _isInit = true;
    super.didChangeDependencies();
  }

The text was updated successfully, but these errors were encountered:

Neil2847 · 2020-11-09T06:13:09Z

I have the above problems too with iOS real devices.

Salakar · 2020-11-09T13:13:21Z

Where have you defined the _firebaseMessagingBackgroundHandler - can you show me the content of the whole dart file where you've defined it. You need to define it outside any classes as a top-level/global function.

muccy · 2020-11-09T13:44:06Z

I can confirm that onMessage function is not triggered when app is foregrounded on iOS. On Android device I receive onMessage correctly

PcolBP · 2020-11-09T15:19:48Z

As onMessage is not Triggered as onMessageOpenedApp.

Salakar · 2020-11-09T15:49:06Z

It's not really clear here what is not working,

Which one is not working, onMessage, onMessageOpenedApp or onBackgroundMessage?

Can you confirm you are also testing this with a real device, this will not work on an iOS simulator.

Can you also confirm APNs has been setup correctly in your project, iOS/macOS will not work at all without APNs - it must be configured.

muccy · 2020-11-09T16:39:48Z

Hi Salakar,
onMessage status according to my tests:

it doesn't work on iOS Simulator
it doesn't work on iOS device
it does work on Android
push notifications are configured properly

As a workaround, which is probably a better solution than the original, I've used FirebaseMessaging.instance.setForegroundNotificationPresentationOptions

Salakar · 2020-11-09T16:46:54Z

Hi Salakar,
onMessage status according to my tests:

it doesn't work on iOS Simulator

it doesn't work on iOS device

it does work on Android

push notifications are configured properly

As a workaround, which is probably a better solution than the original, I've used FirebaseMessaging.instance.setForegroundNotificationPresentationOptions

it doesn't work on iOS Simulator

Correct - FCM will only ever work on a real device.

it doesn't work on iOS device

Could you explain specifically what doesn't work with onMessage? You don't get the event in Dart or it doesn't show notifications in the foreground.

push notifications are configured properly

Could you clarify what steps you've taken to configure, have you followed the APNs integration guide; https://firebase.flutter.dev/docs/messaging/apple-integration and how are you sending your messages.

@muccy

muccy · 2020-11-09T17:29:18Z

I don't receive the Dart event.
I followed the guide, I'm sending the messages through Firebase Console. I'm really sure the implementation works because notifications are received by the device when app is backgrounded. What is more, I read a log printed (I assume) from the Flutter Fire plugin on VS Code console containing the message I've just sent.

Salakar · 2020-11-09T17:38:25Z

@muccy What is more, I read a log printed (I assume) from the Flutter Fire plugin on VS Code console containing the message I've just sent.

Ah interesting, can you show me this log. Also can you show me how you've setup the onMessage code in your Dart code?

muccy · 2020-11-09T17:40:04Z

Not now because I'm quite busy, sorry. But I'll do it for sure as soon as I can.
Thank you very much

Salakar · 2020-11-09T17:41:00Z

Not now because I'm quite busy, sorry. But I'll do it for sure as soon as I can.

Ok, thanks. Could you also let me know the version of iOS your device is running when you can also.

cgonzalezandrades · 2020-11-09T21:49:25Z

@Salakar My apologies for the late response.

Im using a reald device ( IOS 14.1) I have firebase console setup and Im able to send messages with firebase console and cloud functions. However, when my app in background, messages are not hitting onBackgroundMessage

Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async { print('message'); print("Handling a background message: ${message.messageId}"); }

Outside my class
_firebaseMessagingBackgroundHandler

Working for me

onMessage.
onMessageOpenedApp.

Not working

onBackgroundMessage.

flutter_local_notifications: ^3.0.1+2
firebase_messaging: ^8.0.0-dev.7

let me know if you need more information...

PcolBP · 2020-11-10T07:07:17Z

Sorry for lack of information. In my case:

Im testing on real devices:

Android:

Huawei P30 Pro
Android 10
FirebaseSDK 26.0.0

iOS:

IPhone X
iOS 14.2
FirebaseSDK 6.34.0

I was using previous version 7.0.3 in production, everything works well. After migrating to 8.0.0-dev.7 something goes wrong on iOS side. As I'am sending notification from Firebase I can see in my logs, that all that data is corect but functions which I pass to onMessage and onMessageOpenedApp wont be triggered.

I'll mention again that everything works on Android side. The problem only occurs when testing on iOS.
Notification will display only in case when application is in background but after click on notification application will come to foreground and onMessageOpenedApp isnt trigerred, as I said ealier i can see print data from my firebase console but onMessage functions or onMesssageOpenedApp won't be triggered.

Log print from console

2020-11-10 07:59:57.399924+0100 Media Creations[1059:481366] flutter: {messageId: 1604991596928874, data: {fcm_options: {image: https://media-creations.pl/assets_mobile/campaigns/DD_49.jpg}, image_url: https://media-creations.pl/assets_mobile/campaigns/DD_49.jpg, url: null, only_image: true}, sentTime: 1604991596, mutableContent: true, notification: {title: Tytuł, apple: {}, body: Opis}}

Class with Notification

import 'package:Media_Creations/models/db_data.dart' show NotificationData;
import 'package:Media_Creations/models/strings_data.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/material.dart';

import './widgets/notification_full.dart';
import './widgets/notification_only_image.dart';

class PushNotificationManager {
  static final PushNotificationManager _instance = PushNotificationManager._();

  final FirebaseMessaging _firebaseMessaging = FirebaseMessaging.instance;

  PushNotificationManager._();

  factory PushNotificationManager() => _instance;

  bool _initialized = false;

  Future<dynamic> _buildDialog(Widget child, BuildContext context) async =>
      showDialog(
        context: context,
        useRootNavigator: true,
        useSafeArea: true,
        builder: (ctx) => child,
        barrierDismissible: true,
      );

  void _fetchMessage(RemoteMessage message, BuildContext context) async {
    if (message == null || message.notification == null) return;
    final Map<String, String> _data = message.data;
    if (_data.containsKey(NotificationData.keyOnlyImage))
      _buildDialog(
          NotificationOnlyImage(
            imageUrl: _data[NotificationData.keyImageUrl],
            innerUrl: _data[NotificationData.keyUrl],
          ),
          context);
    if (_data.containsKey(NotificationData.keyFullNotification))
      _buildDialog(
          NotificationFull(
            imageUrl: _data[NotificationData.keyImageUrl],
            url: _data[NotificationData.keyUrl],
            title: _data[NotificationData.keyTitle],
            description: _data[NotificationData.keyDescription],
            btnCloseText: _data[NotificationData.keyBtnCancel],
            btnOpenText: _data[NotificationData.keyBtnOk],
          ),
          context);
  }

  Future<void> init(BuildContext context) async {
    if (!_initialized) {
      await _firebaseMessaging.requestPermission();
      _firebaseMessaging
          .getInitialMessage()
          .then((message) => _fetchMessage(message, context));
      FirebaseMessaging.onMessage
          .listen((message) => _fetchMessage(message, context));
      FirebaseMessaging.onMessageOpenedApp
          .listen((message) => _fetchMessage(message, context));

      String token = await _firebaseMessaging.getToken();
      print("${Strings.firebaseToken}$token");

      _initialized = true;
    }
  }
}

Let me know if you need any additional information. @Salakar

Salakar · 2020-11-10T15:56:15Z

I think I'd probably need to screenshare with someone as I still don't full understand where it's going wrong and I'd like to see the full environment/project setup. With FCM there's so many moving parts it's hard to get the complete picture down in a GitHub issue without going back and forth on replies forever 😅

Or if someone is able to add me to their project on git I can also look there (confidentially of course).

den-ree · 2020-11-11T12:36:47Z

I'm using 8.0.0-dev.8 and it doesn't work on iOS, but on 7.0.3 everything was okay.

den-ree · 2020-11-12T14:25:29Z

@Salakar I'm okay to schedule a zoom call and go through the project.

Salakar · 2020-11-12T16:26:47Z

@den-ree dropped you an email

den-ree · 2020-11-12T17:14:16Z

@Salakar replied, I'm planning to do testing on iOS 14.2.

den-ree · 2020-11-16T12:05:53Z

@Salakar no luck, I don't receive any notifications on iOS 14.2, tested on a real device.

HugoHeneault · 2021-01-15T10:53:26Z

Hey guys! Some time passed since last update, did you manage to get your notification through your app?

Thanks 🙏

kuromukira · 2021-01-28T02:35:35Z

FirebaseMessaging.onMessage in my end does not work. Although I see a printed log of the notification I sent via FCM legacy HTTP and notification banner is shown.

This is on an iOS Device (14.4) - firebase_messaging 8.dev14

PcolBP · 2021-01-28T09:16:35Z

FirebaseMessaging.onMessage in my end does not work. Although I see a printed log of the notification I sent via FCM legacy HTTP and notification banner is shown.

This is on an iOS Device (14.4) - firebase_messaging 8.dev14

Which FB SDK version do you use?
If you don't specify it look here.

maares · 2021-02-13T05:45:37Z

Hi just using the packages for the first time, after several hours, searching on this git issues, found that I was mistakenly sending the payload, thanks to #4300 :

Does the background callback work if you send a notification through FCM?

Such as

{
  "notification":{
    "title": "This is the title",
    "body": "This is the body",
  },
  "content_available": true,
  "priority": "high",
  "data": {
    "id": 15,
    "type": "comment"
  },
  "to": "FCM token"
}

From:

[
        "notification" => [
          "title" => $title,
          "body" => $message,
          "click_action" => "FLUTTER_NOTIFICATION_CLICK",
],

To:

"notification" => [
          "title" => $title,
          "body" => $message,
          // "click_action" => "FLUTTER_NOTIFICATION_CLICK",
        ],
        "priority": "high",

This was preventing handlers to get notify, and after changing them, complete example from repo started working!

Hope this helps any newcomer !

santiotin · 2021-03-09T15:19:31Z

I have the same issue using firebase_messaging: 9.0.0. When sending a notification I see through logs that is received (firebase messaging logs show: broadcast received for message). But the functions onMessage(foreground) or onMessageOpenedApp(background) are never executed. Someone knows why?

atakangl · 2021-03-15T15:53:19Z

I have the similar issue when upgrading iOS app.

I was using firebase_messaging: ^6.0.12 and i upgraded to firebase_messaging: ^9.0.0. In version 6.0.12 there is no foreground alert feature. I built foreground alert show with firebase local notification. Then I upgraded to 9.0.0 and added:

await FirebaseMessaging.instance
.setForegroundNotificationPresentationOptions(
alert: false,
badge: false,
sound: false,
);

There is no problem when I first installed or built to iOS device. But when I upgraded older version to last test version of my app in TestFlight setForegroundNotificationPresentationOptions is not working. Alert is showing twice. First firebase messaging default alert, second alert from my functions with firebase local notification. Any solution for this case?

lucasalmeida-egsys · 2021-03-24T17:17:07Z

I have the same issue using firebase_messaging: 9.0.0. When sending a notification I see through logs that is received (firebase messaging logs show: broadcast received for message). But the functions onMessage(foreground) or onMessageOpenedApp(background) are never executed. Someone knows why?

Same issue here.

santiotin · 2021-03-24T17:22:56Z

@lucasalmeida-egsys I resolved my issue navigating to RemoteMessage.fromMap() and changing contentAvailable: map['contentAvailable'], to contentAvailable: map['contentAvailable']??false and mutableContent: map['mutableContent'], to mutableContent: map['mutableContent']??false

lucasalmeida-egsys · 2021-03-24T18:50:50Z

@lucasalmeida-egsys I resolved my issue navigating to RemoteMessage.fromMap() and changing contentAvailable: map['contentAvailable'], to contentAvailable: map['contentAvailable']??false and mutableContent: map['mutableContent'], to mutableContent: map['mutableContent']??false

solved, thanks.

juanektbb · 2021-04-08T13:40:35Z

In my case, we can get background notifications on IOS real devices. But it does not invoke _firebaseMessagingBackgroundHandler which I use to do some tasks when the app receive a background notification.
(Android devices work perfect)

Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  print("Background Notification");
}

mixin PushNotification<T extends StatefulWidget> on State<T>, DioField {
  static final _messaging = FirebaseMessaging.instance;

  @override
  initState() {
    super.initState();
    registerUpPushNotification();
    _listenToPushNotifications();
  }

  registerUpPushNotification() {
    //REGISTER REQUIRED FOR IOS
    if (Platform.isIOS) {
      _messaging.requestPermission();
    }

    _messaging.getToken().then((value) {
      if (value == null) return;
      print('token $value');
    });
  }

  _listenToPushNotifications() {
    FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);

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

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

firebase_messaging 8.0.0-dev.12

mario202k · 2021-04-27T22:47:49Z

"7.3.0 - [Firebase/Messaging][I-FCM002022] APNS device token not set before retrieving FCM Token for Sender ID '708349719378'. Notifications to this FCM Token will not be delivered over APNS.Be sure to re-retrieve the FCM token once the APNS device token is set."
Nobody have this when running on Xcode? Is it related to "onIosSettingsRegistered" that is deprecated?

mario202k · 2021-04-28T13:53:38Z

"7.3.0 - [Firebase/Messaging][I-FCM002022] APNS device token not set before retrieving FCM Token for Sender ID '708349719378'. Notifications to this FCM Token will not be delivered over APNS.Be sure to re-retrieve the FCM token once the APNS device token is set."
Nobody have this when running on Xcode? Is it related to "onIosSettingsRegistered" that is deprecated?

Sorry a was forgetting await. Everything works on both side.

russellwheatley · 2021-12-22T12:21:48Z

Hi guys, I'm going to close this issue for now as we're on firebase_messaging version 11.2.4 now. Please create a new issue if you feel there is a problem with the latest version. Thank you.

darshankawar added the blocked: customer-response Waiting for customer response, e.g. more information was requested. label Nov 9, 2020

google-oss-bot added Needs Attention This issue needs maintainer attention. and removed blocked: customer-response Waiting for customer response, e.g. more information was requested. labels Nov 9, 2020

darshankawar added platform: ios Issues / PRs which are specifically for iOS. plugin: messaging type: bug Something isn't working and removed Needs Attention This issue needs maintainer attention. labels Nov 11, 2020

darshankawar changed the title ~~version 8.0.0-dev.7 unable to hit message handler functions.~~ [Firebase_messaging] : version 8.0.0-dev.7 unable to hit message handler functions. Nov 11, 2020

russellwheatley closed this as completed Dec 22, 2021

firebase locked and limited conversation to collaborators Jan 22, 2022

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[Firebase_messaging] : version 8.0.0-dev.7 unable to hit message handler functions. #4054

[Firebase_messaging] : version 8.0.0-dev.7 unable to hit message handler functions. #4054

cgonzalezandrades commented Nov 7, 2020 •

edited by Ehesp

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russellwheatley commented Dec 22, 2021

[Firebase_messaging] : version 8.0.0-dev.7 unable to hit message handler functions. #4054

[Firebase_messaging] : version 8.0.0-dev.7 unable to hit message handler functions. #4054

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