[firebase_messaging] firebase_messaging should work with flutter_local_notifications

[bparrishMines]

We currently have a solution for multiple plugins to receive callbacks as a UNUserNotificationCenterDelegate. However, the firebase_messaging uses swizzling when you set the UNUserNotificationCenterDelegate and FIRMesssagingDelegate; as explained here.

It should be possible to have firebase_messaging work with other notification plugins and would require disabling of swizzling and handling the callbacks manually. Explained here: https://firebase.google.com/docs/cloud-messaging/ios/receive#handle-swizzle

[agyimr]

Is there any news on this?

[jaumard]

by having this new issue instead of flutter/flutter#22099 it has been put deep into backlog :(
Still not possible to have firebase_messaging working with other plugin for local notification...

[bparrishMines]

Debugging, solving, and testing will probably take about 1-2 weeks. I put this in the January 2020 milestone since this is highly upvoted.

[omarsherifs]

is there any news ?

[bparrishMines]

@MaikuB

You said that you tested firebase_messaging and flutter_local_notifications together and didn't receive messages in firebase_messaging.

When I run the example in #1785, I get a callback in onMessage for firebase_messaging and onSelectNotification for flutter_local_notifications.

What did you do to test if you received the remote notification?

[MaikuB]

@bparrishMines I was this the app at https://github.com/MaikuB/flutter_firebase_local_notifications_examples/tree/firebase_with_local/java_objc to test. It was pointing to your fork of the phone. For sending notifications, I had a firebase project set up and used the console to send a targeted test notification using the token returned from the plugin

[pro100svitlo]

@bparrishMines messages and notifications works fine, when app in foreground.
But I cant receive any message when app is off.

[MaikuB]

@bparrishMines i've updated the repo to omit the versions in the pubspec so it should pull the latest versions. The things I've observed using the app in the repo were

• if app is in background and test notification is sent, it will be displayed. That was expected though so all good
• if app is in foreground and I tried to send a test notification, onMessage isn't fired. This occurs even if I removed all references to the flutter_local_notifications plugin. ForonMessage to fire when the app is in the foreground, I needed to remove the code in AppDelegate for registering the UNUserNotificationCenterDelegate. This behaviour is why I suspected the method swizzling is causing issues given I was previously able to create two simple notification related plugins, execute code to fire a notification and willPresentNotification would trigger on the iOS side for both plugins (note: this was done a while back and I mentioned it here). As pointed out in your original post, the FCM iOS documentation also demonstrates manually handle callbacks (related to UNUserNotificationCenterDelegate) when method swizzling is disabled.

Note that I do need to make changes following our previous discussion where I'll likely need to have the flutter_local_notifications plugin add some additional information to the notification. This is to ensure that the plugin will only triggers callbacks for notifications created by the plugin.

[pro100svitlo]

any updates on this topic?

[JoseGeorges8]

Debugging, solving, and testing will probably take about 1-2 weeks. I put this in the January 2020 milestone since this is highly upvoted.

been 28 days since this update, any news?