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

We are supposed to write the data for the new image to the URL we obtain via

                let theExportURL = output.renderedContentURL

In my case i was doing this...

                let outputData = UIImagePNGRepresentation(bakedImage)

And at runtime i was getting the error

Error Domain=NSCocoaErrorDomain Code=-1 "The operation couldn’t be completed. (Cocoa error -1.)

But when I started exporting the data like this...

let outputData = UIImageJPEGRepresentation(bakedImage, 1)

It worked. This is documented here ... https://developer.apple.com/library/prerelease/ios/documentation/Photos/Reference/PHContentEditingOutput_Class/index.html

and this same question has been answered here... https://stackoverflow.com/a/28362235