example/lib/main.dart

_save() async {
    var response = await Dio().get("https://ss0.baidu.com/94o3dSag_xI4khGko9WTAnF6hhy/image/h%3D300/sign=a62e824376d98d1069d40a31113eb807/838ba61ea8d3fd1fc9c7b6853a4e251f94ca5f46.jpg", options: Options(responseType: ResponseType.bytes));
    final result = await ImageGallerySaver.saveImage(Uint8List.fromList(response.data));
    print(result);
  }