setAudioFocusMode method Null safety

Future<int> setAudioFocusMode(
  1. int focusMode
)

Set the audio focus mode Only for Android

focusMode Focus mode NERtcAudioFocusMode

Implementation

Future<int> setAudioFocusMode(int focusMode) async {
  if (defaultTargetPlatform == TargetPlatform.android) {
    IntValue reply =
        await _api.setAudioFocusMode(IntValue()..value = focusMode);
    return reply.value ?? -1;
  } else {
    return -1;
  }
}