[firebase_messaging] Support Flutter 1.12 Android embedding

[creativecreatorormaybenot]

The plugin needs to integrate the Android embedding changes in Flutter 1.12.

FlutterApplication does not exist anymore - see the README section.

[creativecreatorormaybenot]

@TahaTesser I think that this is not only documentation because the functionality of the plugin depends on this.

[TahaTesser]

Hi @creativecreatorormaybenot
Please explain it detail what's the issue/change you looking for?
To better the address the issue
Thank you

[creativecreatorormaybenot]

@TahaTesser See #1646.

I opened this to show that there are problems with FlutterApplication in addition to what the other issues state. I do not know how to fix it right now.

[mnesarco]

Hi, I just upgraded my App to the new Flutter 1.12 API (embedding) and now I don't know how to keep firebase_messaging working :(

[vkammerer]

@mnesarco you may find some help at https://stackoverflow.com/a/59490722

[vkammerer]

@amirh @kroikie Should the migration of the firebase_messaging plugin to Android embedding v2 take inspiration from the work done by @bkonyi in flutter/plugins#2193 ?
It looks like his abstraction of a BackgroundExecutor could be quite useful when executing firebase messaging in the background: https://github.com/flutter/plugins/blob/master/packages/android_alarm_manager/android/src/main/java/io/flutter/plugins/androidalarmmanager/FlutterBackgroundExecutor.java .

[KamilSvoboda]

@mnesarco you may find some help at https://stackoverflow.com/a/59490722

But this approach is not compatible with writing custom platform-specific code. As is described on flutter.dev - The FlutterEngine is needed to set setMethodCallHandler on MethodChannel.

[henry2man]

@mnesarco you may find some help at https://stackoverflow.com/a/59490722

I followed the tutorial for Android ( https://pub.dev/packages/firebase_messaging ) just without the optional section Optionally handle background messages. At that point I had the same issue as per #248.

At that point I used the answer pointed by @vkammerer (https://stackoverflow.com/a/59490722) and then notifications worked great :)

Kudos!

[rafaeljustinox]

@mnesarco you may find some help at https://stackoverflow.com/a/59490722

I followed the tutorial for Android ( https://pub.dev/packages/firebase_messaging ) just without the optional section Optionally handle background messages. At that point I had the same issue as per #248.

At that point I used the answer pointed by @vkammerer (https://stackoverflow.com/a/59490722) and then notifications worked great :)

Kudos!

Me too! I was facing the same problem but I solved following this steps! Thanks bro!