Record Stream returns empty data in the background on Android

[bphillips09]

Package version
6.0.0

Environment
Android 14

When the application is put in the background, the stream returns empty data. When it is resumed, stream data is normal.

Example:

final recordStream = await record.startStream(RecordConfig(
  encoder: AudioEncoder.pcm16bits,
  sampleRate: 44100,
  numChannels: 2,
  androidConfig: const AndroidRecordConfig(
    manageBluetooth: false,
    audioSource: AndroidAudioSource.unprocessed,
  ),
  device: device,
));
recordStream.listen((stream) {
  //data here is empty when the application enters the background
});

My use-case is real-time audio playback from a USB audio input device. It works great in all scenarios except when the application is put in the background, though that scenario is crucial as it will be for background music playback.

Thanks!

[llfbandit]

This package has no such feature.
You may try packages dedicated to background service.

[bphillips09]

@llfbandit It looks like this was done as part of 6.1.0?

[llfbandit]

Yes, you can give it a try with required setup (still quite experimental for now).

[bphillips09]

Unfortunately it still shows the symptoms reported above even with the changes in 6.1.0.

At the time, since this feature (background input/recording) was out-of-scope for record, I implemented it myself here with a dependency override.

This works fine and background recording works as intended. I can create a PR if you want, but I'm not sure what additional functionality 6.1.0 adds that my changes don't.

My changes also required this in the main AndroidManifest.xml:

<service
    android:name="com.llfbandit.record.record.recorder.RecordService"
    android:enabled="true"
    android:exported="false" />

[llfbandit]

I guess you didn't get the notification.

Did you follow this doc?

Also, there's a missing piece in docs, on Android you need to enable it explicitly by setting RecordConfig(androidConfig: AndroidRecordConfig(service: AndroidService(title: '', content: '').