ability to remember which camera roll photos should not be displayed when reopening app (ios)

Question

In my application the user can display the camera roll photos and there is an option to not show/display a particular image next time. My question: is there any flag, EXIF or metadata info to let the application not display the flagged images when the user opens the app again?

Answer 1

You should remember the URL of the unwanted images and then hide the images with that URL.

NSURL *url = asset.defaultRepresentation.url