listen method

@override void listen(String id)

Implementation

@override
void listen(String id) {
  _eventStream[id] = eventChannel.receiveBroadcastStream().map((event) {
    if (event['id'] == id) {
      final eventName = event['event'] as String;
      switch (eventName) {
        case 'state':
          {
            final state = event['value'] as int;
            return StateEvent(value: state.toDouble());
          }
        case 'error':
          {
            return ErrorEvent(value: event['value'] as String);
          }
        case 'duration':
          {
            return DurationEvent(value: event['value'] as double);
          }
        case 'samples':
          {
            final samples = (event['value'] as List<dynamic>)
                .map((e) => e as double)
                .toList();
            return SamplesEvent(value: samples);
          }
        case 'completed':
          {
            return CompletedEvent(value: event['value'] as bool);
          }
        default:
          {
            return NoneEvent();
          }
      }
    }
  });
}