[BUG]: BasicLock.synchronized io.flutter.plugins.firebase.crashlytics.FlutterError - PlatformException(startRecorder, startRecorder, Failure to start recorder, null)

[nergal79]

Using -> flutter_sound: ^9.4.6

We are getting this crash on One Plus Android 9 device .

Crash Stacktrace -> Fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: PlatformException(error, null, null, java.lang.IllegalStateException at android.media.MediaRecorder.native_resume(Native Method) at android.media.MediaRecorder.resume(MediaRecorder.java:1205) at gc.o.d(Unknown Source:15) at gc.k.n(Unknown Source:7) at hc.e.G(Unknown Source:2) at hc.f.E(Unknown Source:218) at s9.j$a.a(Unknown Source:17) at g9.c.l(Unknown Source:18) at g9.c.m(Unknown Source:41) at g9.c.i(Unknown Source:0) at g9.b.run(Unknown Source:12) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6898) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) ) at StandardMethodCodec.decodeEnvelope(message_codecs.dart:651) at MethodChannel._invokeMethod(platform_channel.dart:334) at FlutterSoundRecorder._resumeRecorder(flutter_sound_recorder.dart:832) at FlutterSoundRecorder.resumeRecorder.<fn>(flutter_sound_recorder.dart:813) at BasicLock.synchronized(basic_lock.dart:33) at FlutterSoundRecorder.resumeRecorder(flutter_sound_recorder.dart:812) at _AudioRecorderModal._resume(audio_recorder_modal.dart:260)

Below is the config we are using to record.

`_setupRecorder() async {
   await TheAudioPlayer().pauseAll();
await recorder.openRecorder();
final session = await AudioSession.instance;
await session.configure(AudioSessionConfiguration(
  avAudioSessionCategory: AVAudioSessionCategory.record,
  avAudioSessionCategoryOptions:
      AVAudioSessionCategoryOptions.allowBluetooth |
          AVAudioSessionCategoryOptions.defaultToSpeaker,
  avAudioSessionMode: AVAudioSessionMode.spokenAudio,
  avAudioSessionRouteSharingPolicy:
      AVAudioSessionRouteSharingPolicy.defaultPolicy,
  avAudioSessionSetActiveOptions: AVAudioSessionSetActiveOptions.none,
  androidAudioAttributes: const AndroidAudioAttributes(
    contentType: AndroidAudioContentType.speech,
    flags: AndroidAudioFlags.none,
    usage: AndroidAudioUsage.voiceCommunication,
  ),
  androidAudioFocusGainType: AndroidAudioFocusGainType.gain,
  androidWillPauseWhenDucked: true,
));
recorder.setSubscriptionDuration(const Duration(milliseconds: 250));
await _start();
 }` 

I m not sure if this is a device specific issue or a library issue .. Any help here would be appreciated .. If u need any further detail just ask

[Larpoux]

@nergal79

'''java.lang.IllegalStateException at android.media.MediaRecorder.native_resume(Native Method)'''

Are you sure that your Recorder is in Pause State when you call the Resume() function ?

[Larpoux]

Your problem is probably in _AudioRecorderModal._resume(audio_recorder_modal.dart:260). You probably call RecorderResume() here but you recorder is not in pause mode.

[nergal79]

@Larpoux Thx for quick reply.. Yeah I am sure Recorder is in Pause State when i call Resume() function .. its working fine in other devices .. This crash is reported on firebase crashlytics for our app only for one device .. Which is the Model:OnePlus5T Android 9 .

[Larpoux]

If you do not encounter this issue always, it could be a problem with Async functions. The crash is because Android is asked to resume the recorder but its device is not in pause mode. You should look very carefully to your asynchronous processing.

Sorry but I cannot help better.

[nergal79]

Thanks for your inputs .. I'll do some deep investigation for this. Cheers 🍺.