如何从 PHPhotoLibrary 获取图像的位置？

Posted 2023-03-10

【中文标题】如何从 PHPhotoLibrary 获取图像的位置？

【英文标题】：How to get location of Image from PHPhotoLibrary?

【发布时间】：2017-12-04 13:17:39

【问题描述】：

由于不推荐使用 ALAssetLibrary Api，我们使用 phphotoLibrary 将图像保存到 PhotoAlbum

如果我们使用 ALAssetLibrary，我们可以获得保存图像的assetUri，但如果我们使用 PHPhotoLibrary，我们无法获得相同的结果。

assetUri 示例-

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

还有其他方法可以使用 PHPhotoLibrary 获得与上述相同的路径吗？

提前致谢

【参考方案1】：

AssetUri 不适用于 PHPhotoLibrary。

我们可以改用request.PlaceholderForCreatedAsset.LocalIdentifier。

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) => 
            
        );
    

参考

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

Get URL of a newly created asset, ios 9 style