Applying metadata to image causes performChanges request to fail

Question

I am using PhotoKit to edit photos and I need to preserve the metadata from the original photo. To do so I save the metadata then provide it to the options paramete

Answer 1

// if the asset does not allow the type of change requested, these methods will raise an exception, call canPerformEditOperation: on the asset to determine if the type of edit operation is allowed.

• (instancetype)changeRequestForAsset:(PHAsset *)asset;

I think it's because Apple don't want you to change the metaData.You can try this method below,maybe create a new one is allowed.

• (instancetype)creationRequestForAssetFromImage:(UIImage *)image;
• (instancetype)creationRequestForAssetFromImageAtFileURL:(NSURL *)fileURL;
• (instancetype)creationRequestForAssetFromVideoAtFileURL:(NSURL *)fileURL;