openAudioSession while on a call crashes the app

[Faaatman]

I tried opening a session while on a call and it crashed the app.
That's how I opened a session

Future<void> _initAudioPlayer() async {
    try {
      _audioPlayer!
          .openAudioSession(focus: AudioFocus.requestFocusAndStopOthers)
          .then((value) {
        setState(() {
          _audioPlayerReady = true;
        });
      });
    } catch (e) {
      print(e);
    }
  }

And these are the logs. apparently, try and catch didn't catch that throw?

[VERBOSE-2:ui_dart_state.cc(199)] Unhandled Exception: 'package:flutter_sound_platform_interface/flutter_sound_player_platform_interface.dart': Failed assertion: line 104 pos 12: 'findSession(aSession) == -1': is not true.
#0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39)
#1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2      FlutterSoundPlayerPlatform.openSession (package:flutter_sound_platform_interface/flutter_sound_player_platform_interface.dart:104:12)
#3      FlutterSoundPlayer._openAudioSession (package:flutter_sound/public/flutter_sound_player.dart:690:41)
#4      FlutterSoundPlayer.openAudioSession.<anonymous closure> (package:flutter_sound/public/flutter_sound_player.dart:651:17)
#5      FlutterSoundPlayer.openAudioSession.<anonymous closure> (package:flutter_sound/public/flutter_sound_player.dart:650:30)
#6      BasicLock.synchronized (package:synchronized/src/basic_lock.dart:31:24)
#7      FlutterSoundPlayer.openAudioSession (package:flutter_sound/public/flutter_sound_player.dart:650:17)

edit: removed useless logs

[Faaatman]

I have changed how I open the session which cleared the log.
I removed the .then to await

Future<void> _initAudioPlayer() async {
    try {
      await _audioPlayer!
          .openAudioSession(focus: AudioFocus.requestFocusAndStopOthers);
      setState(() {
        _audioPlayerReady = true;
      });
    } catch (e) {}
  }

and I have read that assert doesn't work in production which might be the cause of the problem?
I will try to build the app in production and check again.

[Larpoux]

Android or iOS or Web ?

Also I need the logs before the crash.

[Larpoux]

Sadly the crashes only happened when I pushed the app to Testflight. they don't happen when I'm debugging it only throws an error.

Maybe you can look to #710
There is a problem with Flutter FFmpeg :

You must also check your build.gradle :

Remove any reference to repository jcenter()
Add a reference to mavenCentral() if not already done

[Faaatman]

ah perfect then I might switch to the lite version instead.
and changed the center to mavenCentral.
will test and get back to you 👍🏼

[Faaatman]

I tried using flutter_sound_lite: ^8.3.9 still the same issue.
and I got this error through sentry package.

MissingPluginException: MissingPluginException(No implementation found for method listen on channel flutter_sound_ffmpeg_event)
  File "platform_channel.dart", line 156, in MethodChannel._invokeMethod
  File "<asynchronous suspension>"
  File "platform_channel.dart", line 545, in EventChannel.receiveBroadcastStream.<fn>

[Larpoux]

I tried using flutter_sound_lite: ^8.3.9 still the same issue.

No, this is not the same issue. Now you have a problem because you call FFmpeg (either directly or indirectly) and FFmpeg is not available in the LITE flavor.

Actually, I suggest that you debug your App with FULL mode. Then, if you think that you can reduce the App size, you will change the favor.

[Faaatman]

My app size is already big and I want to make it lighter. To be honest I don't know where I'm using FFmpeg. I will investigate it more and get back to you.
Thank you for your help man :)

[Larpoux]

Also you can try to run your app in release mode without having to upload to TestFlight :

flutter run ios --release

[Faaatman]

Oh yeah I forgot about that. Thanks!

[Larpoux]

flutter run --release