[FIXED] How to know if a PHAsset has been modified?

Issue

More specifically, how can you know whether a PHAsset has current version of the underlying asset different than the original?

My user should only need to choose between the current or original asset when necessary. And then I need their answer for PHImageRequestOptions.version.

Solution

I have found a way to determine whether a PHAsset has been edited or not. Using a PHAssetResource API, you can get an array of data resources for a given asset. If the photo has been modified, it will have at least one resource that is the adjustment data of an edit.

let isEdited = PHAssetResource.assetResources(for: asset).contains(where: { $0.type == .adjustmentData })

Note that if you want to actually work with a resource file, you have to fetch its data using a PHAssetResourceManager API. Also note that this method returns right away - there's no waiting for an async network request, unlike other answers here.

Answered By - Jordan H

Answer Checked By - Marilyn (PHPFixing Volunteer)