Category "flutter-method-channel"

How to use Flutter MethodChannel from FirebaseMessaging.onBackgroundMessage?

I'm using firebase_messaging onBackgroundMessage handler for listening push messages and it works as expected. Now I want to call platform method from this hand

Flutter method channel error. { Unhandled Exception: MissingPluginException(No implementation found for method getBatteryLevel on channel battery) }

so i followed everthing from 'https://flutter.dev/docs/development/platform-integration/platform-channels?tab=android-channel-java-tab' but when I click the flo