如何从PHPhotoLibrary中获取图像的位置？

Question

由于不推荐ALAssetLibrary Api，所以我们使用PHPhotoLibrary将图像保存到PhotoAlbum

如果我们使用ALAssetLibrary，我们可以获得保存的映像的assetUri，但是如果我们使用PHPhotoLibrary，则不能得到相同的图像。

assetUri-的示例

/Library/Developer/CoreSimulator/Devices/1ABD9386-B868-4B8D-9670-3F260D574569/data/Media/DCIM/100APPLE/

是否有另一种方法可以获得上面提到的使用PHPhotoLibrary的路径？

提前谢谢

Answer 1

AssetUri在PHPhotoLibrary中不可用。

我们可以用request.PlaceholderForCreatedAsset.LocalIdentifier代替。

UIImagePickerController controller = new UIImagePickerController {
      SourceType = UIImagePickerControllerSourceType.SavedPhotosAlbum,
      ImagePickerControllerDelegate = new PickerDelegate(),
      MediaTypes = new string[] { UTType.Image }
};
this.PresentViewController(controller, true, null);


public class PickerDelegate: UIImagePickerControllerDelegate
{
    public override void FinishedPickingImage(UIImagePickerController picker, UIImage image, NSDictionary editingInfo)
    {
        PHPhotoLibrary.SharedPhotoLibrary.PerformChanges(
            () => {
                PHAssetChangeRequest request = PHAssetChangeRequest.FromImage(image);
                string id = request.PlaceholderForCreatedAsset.LocalIdentifier;
            },
            (bool success, NSError error) => {
            }
        );
    }
}

请参阅

How to get the URL of an image just added in PHPhotoLibrary

Get URL of a newly created asset, iOS 9 style