How to get the URL of an image just added in PHPhotoLibrary

Question

I am using the UIImagePickerController in two cases

• to select an existing image in the Photo Library
• to take a new picture

In the first

Answer 1

I don't like this fix, as this could result in a race condition. So far I can't think of a better solution. If someone does I'd love to hear it :) Either way, here is a Swift-version of Rigel Chen's answer

import Photos

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {

        var localId:String?
        let imageManager = PHPhotoLibrary.sharedPhotoLibrary()

        imageManager.performChanges({ () -> Void in

            let request = PHAssetChangeRequest.creationRequestForAssetFromImage(image)
            localId = request.placeholderForCreatedAsset?.localIdentifier

            }, completionHandler: { (success, error) -> Void in
                dispatch_async(dispatch_get_main_queue(), { () -> Void in

                    if let localId = localId {

                        let result = PHAsset.fetchAssetsWithLocalIdentifiers([localId], options: nil)
                        let assets = result.objectsAtIndexes(NSIndexSet(indexesInRange: NSRange(location: 0, length: result.count))) as? [PHAsset] ?? []

                        if let asset = assets.first {
                            // Do something with result
                        }
                    }
                })
        })
    }
}