Audio_service: MissingPluginException for just_audio.methods

[pblinux]

Hi.

Describe the bug
A exception is thrown every time an just_audio player is constructed:

Error messages

MissingPluginException(No implementation found for method init on channel com.ryanheise.just_audio.methods)

This is my BackgroudAudioTask

class RadioAudioTask extends BackgroundAudioTask {
  final String url;

  RadioAudioTask({@required this.url});

  AudioPlayer audioPlayer = AudioPlayer(); // MissingPluginException here.
  Completer _completer = Completer();

  @override
  Future<void> onStart() async {
    print('Start');
    // _player.setUrl(url);
    await _completer.future;
  }

  @override
  void onStop() {
    print('Stop');
    // _player.stop();
    _completer.complete();
  }

  @override
  void onPlay() {
    print('Play');
    // _player.play();
  }
}

Runtime Environment
I'm trying with 0.1.0 and 0.0.6 of just_audio.

Flutter SDK version

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.5, on Linux, locale en_US.UTF-8)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Android Studio (version 3.4)
[✓] VS Code (version 1.41.1)
[✓] Connected device (1 available)

[ryanheise]

Can you please fork this project and make "minimal" changes to it to reproduce the bug? By minimal, I mean the minimal number of dependencies and code.

[pblinux]

Sure! Thanks for the response.

Btw, I'm using firebase_messaging, so I think It might be related to #129 but I'm not sure because is an issue with just_audio specifically.

Actually, the output when the conflict between firebase_messaging and audio_service occurs is diferent:

Unhandled Exception: PlatformException(error, Attempt to invoke virtual method 'void com.ryanheise.audioservice.AudioServicePlugin$BackgroundHandler.init(io.flutter.plugin.common.BinaryMessenger)' on a null object reference, null)

[Pregum]

Hi.

I had the same problem but solved it by changing the app's MainActivity.java and AndroidManifest.xml following the steps below.

https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects

[pblinux]

Hi @Pregum, thank you! That was the problem.

[ryanheise]

Glad to hear you got it working.