PHPhotoLibrary保存gif数据

Question

在新的ALAssetsLibrary->writeImageDataToSavedPhotosAlbum中找不到与PHPhotoLibrary类似的方法，因为ALAssetsLibrary在iOS 9中不推荐使用，所以我无法保存GIF，可能我正在使用以下代码

[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
        PHAssetChangeRequest *assetRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:[UIImage imageWithData:gifdata]];
        placeholder = [assetRequest placeholderForCreatedAsset];
        photosAsset = [PHAsset fetchAssetsInAssetCollection:collection options:nil];
        PHAssetCollectionChangeRequest *albumChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:collection
                                                                                                                      assets:photosAsset];
        [albumChangeRequest addAssets:@[placeholder]];
    } completionHandler:^(BOOL success, NSError *error) {
        if (success)
        {

        }
        else
        {

            NSLog(@"%@", error);
        }
    }];

Answer 1

我通过创建临时文件并使用：

creationRequestForAssetFromImageAtFileURL

Answer 2

我使用NSData保存gif映像，ALAssetsLibrary方法UIImageWriteToSavedPhotosAlbum在iOS8之后不再推荐，api说我们可以使用PHAssetCreationRequest方法[[PHAssetCreationRequest creationRequestForAsset] addResourceWithType:PHAssetResourceTypePhoto data:data options:options];保存这个gif映像数据，所以您也可以使用url请求来保存gifs。

守则如下：

NSString *path = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"gif"];
NSData *data = [NSData dataWithContentsOfFile:path];
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
    PHAssetResourceCreationOptions *options = [[PHAssetResourceCreationOptions alloc] init];
    [[PHAssetCreationRequest creationRequestForAsset] addResourceWithType:PHAssetResourceTypePhoto data:data options:options];
} completionHandler:^(BOOL success, NSError * _Nullable error) {
    NSLog(@"：%d",success);
}];

Answer 3

我已经通过使用Photos框架成功地将gif文件保存到Photos图片库

PHPhotoLibrary.shared().performChanges ({
    let url = URL(fileURLWithPath: "your file path")
    PHAssetChangeRequest.creationRequestForAssetFromImage(atFileURL: url)
  }) { saved, error in
    if saved {
      print("Your image was successfully saved")
    }
  }

希望能帮上忙！