[BUG]: Unable to play audio file on Android

Flutter Sound Version :

• FULL or LITE flavor ?

• Important: Result of the command : flutter pub deps | grep flutter_sound flutter pub deps | grep flutter_sound |-- flutter_sound_lite 8.1.4 | |-- flutter_sound_platform_interface 8.1.4 | |-- flutter_sound_web 8.1.4 | | |-- flutter_sound_platform_interface…

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Severity

• Result is not what expected

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Platforms you faced the error

• Android 10 on a OnePlus 6 physical device

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Describe the bug When attempting to play audio, the library throws an error and does not start playback. The same code works on iOS.

To Reproduce

try {
      await player.openAudioSession(
        focus: AudioFocus.requestFocusAndStopOthers,
        category: SessionCategory.playback,
        mode: SessionMode.modeSpokenAudio,
        withUI: true,
      );
      await player.setSubscriptionDuration(Duration(milliseconds: 50));
      streamSubscription = player.onProgress.listen((event) {
        playbackStream.add(event);
      });
      await player.startPlayer(
          fromURI: audioFilePath,
          whenFinished: () async {
            await stopPlayback();
            print("audio playback done");
          });
      status = PlayerStatus.playing;
      _statusStream.add(status);
    } catch (err, trace) {
      print(err);
      print(trace);
    }

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Logs

I/flutter ( 5773): FS:—> openAudioSession D/MediaBrowserCompat( 5773): Connecting to a MediaBrowserService. I/AudioManager( 5773): In stopBluetoothSco(), calling application: com.example.voice_app I/AudioManager( 5773): In setBluetoothScoOn(), on: false, calling application: com.example.voice_app I/AudioManager( 5773): In setSpeakerphoneOn(), on: true, calling application: com.example.voice_app I/AudioManager( 5773): In setSpeakerphoneOn(), on: true, calling application: com.example.voice_app I/AudioManager( 5773): In setBluetoothScoOn(), on: false, calling application: com.example.voice_app I/AudioManager( 5773): In stopBluetoothSco(), calling application: com.example.voice_app I/AudioManager( 5773): In setMode(), mode: 0, calling application: com.example.voice_app I/flutter ( 5773): FS:<— openAudioSession I/flutter ( 5773): FS:—> channelMethodCallHandler : openPlayerCompleted I/flutter ( 5773): —> openPlayerCompleted: true I/flutter ( 5773): <— openPlayerCompleted: true I/flutter ( 5773): FS:<— channelMethodCallHandler : openPlayerCompleted I/flutter ( 5773): FS:—> setSubscriptionDuration I/flutter ( 5773): FS:<---- setSubscriptionDuration I/flutter ( 5773): FS:—> startPlayer I/flutter ( 5773): FS:—> stop E/MediaPlayerNative( 5773): stop called in state 0, mPlayer(0x0) I/flutter ( 5773): FS:—> channelMethodCallHandler : stopPlayerCompleted I/flutter ( 5773): —> stopPlayerCompleted: true I/flutter ( 5773): <— stopPlayerCompleted: true I/flutter ( 5773): FS:<— channelMethodCallHandler : stopPlayerCompleted V/MediaPlayer( 5773): resetDrmState: mDrmInfo=null mDrmProvisioningThread=null mPrepareDrmInProgress=false mActiveDrmScheme=false V/MediaPlayer( 5773): cleanDrmObj: mDrmObj=null mDrmSessionId=null I/flutter ( 5773): FS:<— stop I/flutter ( 5773): FS:—> _convert I/flutter ( 5773): FS:—> needToConvert I/flutter ( 5773): FS:<— needToConvert I/flutter ( 5773): FS:<— _convert E/FlutterSoundPlugin( 5773): startPlayer() exception I/flutter ( 5773): FS:—> channelMethodCallHandler : updatePlaybackState I/flutter ( 5773): FS:<— channelMethodCallHandler : updatePlaybackState I/flutter ( 5773): PlatformException(ERR_UNKNOWN, ERR_UNKNOWN, Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference, null) I/flutter ( 5773): #0 StandardMethodCodec.decodeEnvelope I/flutter ( 5773): #1 MethodChannel._invokeMethod I/flutter ( 5773): <asynchronous suspension> I/flutter ( 5773): #2 MethodChannelFlutterSoundPlayer.invokeMethod I/flutter ( 5773): <asynchronous suspension> I/flutter ( 5773): #3 FlutterSoundPlayer._startPlayer I/flutter ( 5773): <asynchronous suspension> I/flutter ( 5773): #4 FlutterSoundPlayer.startPlayer.<anonymous closure> I/flutter ( 5773): <asynchronous suspension> I/flutter ( 5773): #5 BasicLock.synchronized I/flutter ( 5773): <asynchronous suspension> I/flutter ( 5773): #6 FlutterSoundPlayer.startPlayer I/flutter ( 5773): <asynchronous suspension> I/flutter ( 5773): #7 AudioPlayerBloc.openPlayback I/flutter ( 5773): <asynchr

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[Larpoux]

@mhstoller ,

How are you doing my friend ? I added a few lines in the documentation for people trying to run flutter_sound inside a debugger : Here

[Larpoux]

Yeah!!!

I think :

• Either Flutter Sound should be clear when not using “startPlayerFromTrack()” and withUI=true
• Or accept correctely “startPlayer()” like it is done on iOS

The fix is simple. But actually I do not work anymore on Tau. Someone can do a Pull Request ? (I always consider PR, because I want other developers on this project)