getAllAudioFromDevice method

Implementation

@override
Future<List<Audio>> getAllAudioFromDevice() async {
  final String resultJson = await methodChannel.invokeMethod('getAllAudio');
  final List<dynamic> audioListJson = jsonDecode(resultJson);
  final List<Audio> audioList =
      audioListJson.map((json) => Audio.fromJson(json)).toList();
  return audioList;
}