transferDataToPresentation method

Future<bool?>? transferDataToPresentation(dynamic arguments)

Transfer data to a secondary display

Transfer data from main screen to a secondary display Consider using [arguments] for cases where a particular run-time type is expected. Consider using String when that run-time type is Map or JSONObject.

Main Screen

DisplayManager displayManager = DisplayManager();
...
static Future<void> transferData(Song song) async {
  displayManager.transferDataToPresentation(<String, dynamic>{
        'id': song.id,
        'title': song.title,
        'artist': song.artist,
      });
}

Secondary display

class _SecondaryScreenState extends State<SecondaryScreen> {
  @override
  Widget build(BuildContext context) {
      return PresentationDisplay(
       callback: (argument) {
         Song.fromJson(argument)
      },
      child: Center()
    );
  }
}

Class Song

class Song {
  Song(this.id, this.title, this.artist);

  final String id;
  final String title;
  final String artist;

  static Song fromJson(dynamic json) {
    return Song(json['id'], json['title'], json['artist']);
  }
}

return Future<bool> the value to determine whether or not the data has been transferred successfully

Implementation

Future<bool?>? transferDataToPresentation(dynamic arguments) async {
  return await _displayMethodChannel?.invokeMethod<bool?>(
      _transferDataToPresentation, arguments);
}