imageDownloadProgress method

@override Stream<String> imageDownloadProgress(String url, { String imageName = 'myimage', ImageFormat fileExtension = ImageFormat.jpeg, DownloadLocation location = DownloadLocation.temporaryDirectory, })

before using homeScreen, lockScreen , bothScreen, systemScreen . we need to download image . imageName -> after downloading image name to be saved so when using home screen, etc we can pass this name and location location where the image is downloaded

Implementation

@override
Stream<String> imageDownloadProgress(String url,
    {String imageName = 'myimage',
    ImageFormat fileExtension = ImageFormat.jpeg,
    DownloadLocation location = DownloadLocation.temporaryDirectory}) async* {
  StreamController<String> streamController = new StreamController();
  try {
    Directory? dir;
    switch (location) {
      case DownloadLocation.applicationDirectory:
        dir = await getApplicationSupportDirectory();
        break;
      case DownloadLocation.externalDirectory:
        dir = await getExternalStorageDirectory();
        break;
      case DownloadLocation.temporaryDirectory:
      default:
        dir = await getTemporaryDirectory();
        break;
    }
    dir ??= await getTemporaryDirectory();
    Dio dio = Dio();
    String fileName = _imageFormatToExtension(fileExtension);
    print("${dir.path}/$imageName.$fileName");
    dio
        .download(
          url,
          "${dir.path}/$imageName.$fileName",
          onReceiveProgress: (int received, int total) {
            streamController
                .add("${((received / total) * 100).toStringAsFixed(0)}%");
          },
        )
        .then((Response response) {})
        .catchError((ex) {
          streamController.add(ex.toString());
          streamController.close();
        })
        .whenComplete(() {
          streamController.close();
        });
    yield* streamController.stream;
  } catch (ex) {
    streamController.addError(ex.toString());
    streamController.close();
  }
}