setEventCallback method Null safety

Future<int> setEventCallback(
  1. NERtcAudioMixingEventCallback callback
)

Set the callback for audio mixing events

Implementation

Future<int> setEventCallback(NERtcAudioMixingEventCallback callback) async {
  _handler.setCallback(callback);
  IntValue reply = await _api.setAudioMixingEventCallback();
  return reply.value ?? -1;
}