Swift Select All Photos From Specific Photos Album

Question

The app can create a custom album in the standard iOS photos application, but I have been unable to find a way for the app to gather all the images from that album to be displayed within the app.

Currently, the app is able to gather images from all the albums, just not one is particular.

let resultCollections = PHAssetCollection.fetchAssetCollectionsWithType(
                 .Album,
        subtype: .AlbumRegular,
        options: nil)

    resultCollections.enumerateObjectsUsingBlock({
        (object, index, stop) -> Void in

        let collection = object as! PHAssetCollection
        let result = PHAsset.fetchAssetsInAssetCollection(collection, options: nil)

        result.enumerateObjectsUsingBlock({
            (object, index, stop) -> Void in

            let asset = object as! PHAsset
            self.images.append(asset)

        })

    })

I have seen other questions that might be marked as duplicates, however the majority of them are talking about opening a UIPickerView to a custom album. This is a possible duplicate of How to fetch all images from custom Photo Album - swift however, it was never answered.

So, how can an iOS app gather all images from a particular photos album?

Answer 1

Add fetchOptions like below

let fetchOptions = PHFetchOptions()
fetchOptions.predicate = NSPredicate(format: "title = %@", YourAlbumTitle)
let resultCollections = PHAssetCollection.fetchAssetCollectionsWithType(.Album, subtype: .AlbumRegular, options: fetchOptions)

Actually, album title isn't unique value, they can duplicate. so I recommend use localIdentifier like below, if your app access multiple albums.

let fetchOptions = PHFetchOptions()
fetchOptions.predicate = NSPredicate(format: "localIdentifier = %@", YourAlbumLocalIdentifier)
let resultCollections = PHAssetCollection.fetchAssetCollectionsWithType(.Album, subtype: .AlbumRegular, options: fetchOptions)