paozhuanyinyu / flutter_gallery_saver

flutter_gallery_saver

We use the image_picker plugin to select images from the Android and iOS image library, but it can't save images to the gallery. This plugin can provide this feature.

Usage

To use this plugin, add flutter_gallery_saver as a dependency in your pubspec.yaml file. For example:

dependencies:
  flutter_gallery_saver: '^0.0.7'

iOS

Your project need create with swift. Add the following keys to your Info.plist file, located in /ios/Runner/Info.plist:

• NSPhotoLibraryAddUsageDescription - describe why your app needs permission for the photo library. This is called Privacy - Photo Library Additions Usage Description in the visual editor
• NSPhotoLibraryUsageDescription - describe why your app needs permission for the photo library. This is called Privacy - Photo Library Usage Description in the visual editor

Android

You need to ask for storage permission to save an image to the gallery. You can handle the storage permission using flutter_permission_handler.

If you target Android 10 (API level 29) or higher, set the value of requestLegacyExternalStorage to true in your app's manifest file:

<manifest ... >
<!-- This attribute is "false" by default on apps targeting
    Android 10 or higher. -->
 <application android:requestLegacyExternalStorage="true" ... >
   ...
 </application>
</manifest>

see document

Example

Saving an image from the internet, quality and name is option

_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 FlutterGallerySaver.saveImage(
        Uint8List.fromList(response.data),
        quality: 60,
        albumName: "hello");
    print("saveImage result: " + result);//这个result文件存储地址
    Fluttertoast.showToast(msg: result, toastLength: Toast.LENGTH_LONG);
  }

Saving file(ig: video/gif/others) from the internet

_saveVideo() async {
    var appDocDir = await getTemporaryDirectory();
    String savePath = appDocDir.path + "/temp.mp4";
    String fileUrl =
        "https://txmov2.a.yximgs.com/upic/2020/09/06/09/BMjAyMDA5MDYwOTQ1MzZfMTQ4NDI1ODY0XzM1NTk2NTg3NTcyXzFfMw==_b_B3580181bdf842990debc043eb9b5d0bd.mp4?clientCacheKey=3x3a54h46ppw6r9_b.mp4";
    await Dio().download(fileUrl, savePath, onReceiveProgress: (count, total) {
      print((count / total * 100).toStringAsFixed(0) + "%");
    });
    final result = await FlutterGallerySaver.saveFile(savePath);
    print("saveFile result: " + result);//这个result是文件存储地址
    Fluttertoast.showToast(msg: result, toastLength: Toast.LENGTH_LONG);
 }