Save Image to Photo Library and retrieve the URL - swift

Question

I can save an image to my photo library using the following code:
PHPhotoLibrary.shared().performChanges({
PHAssetCreationRequest
.creationRequestForAssetFromImage(atFileURL: outfileURL)
}) { (saved, err) in
print("Saved?", saved)
if (saved) {
DispatchQueue.main.async {
onComplete(outfileURL.absoluteString)
}
}
}
But I am trying to load the image I just saved in an Image (SwiftUI) and I want to get the new images fileURL. The outfileURL is a temp file and is not retained. Please note this is a gif - if that has any bearing.
I am trying to use the PHObjectPlaceholder thing but I still don't know how to get the location out:
var placeHolder: PHObjectPlaceholder? = nil
PHPhotoLibrary.shared().performChanges({
let changeRequest = PHAssetCreationRequest.creationRequestForAssetFromImage(atFileURL: outfileURL)
placeHolder = changeRequest?.placeholderForCreatedAsset
}) { (saved, err) in
print("Saved? \(saved) to location \(placeHolder?)") //<--- AAAARGH!!!!
if (saved) {
DispatchQueue.main.async {
onComplete(/*????*/)
}
}
}

Answer 1

From PHObjectPlaceholder you can use localIdentifier
let fetchOptions = PHFetchOptions()
let fetchResult: PHFetchResult = PHAsset.fetchAssets(withLocalIdentifiers: [placeholder.localIdentifier], options: fetchOptions)
if let asset = fetchResult.firstObject {
// Here you can get UIImage from PHAsset
}
So this is possible solution:
var placeHolder: PHObjectPlaceholder? = nil
PHPhotoLibrary.shared().performChanges({
let changeRequest = PHAssetCreationRequest.creationRequestForAssetFromImage(atFileURL: outfileURL)
placeHolder = changeRequest?.placeholderForCreatedAsset
}) { (saved, err) in
if let localIdentifier = placeHolder?.localIdentifier, saved {
let fetchOptions = PHFetchOptions()
let fetchResult = PHAsset.fetchAssets(withLocalIdentifiers: [localIdentifier], options: fetchOptions)
if let phAsset = fetchResult.firstObject {
let targetSize = CGSize(width: CGFloat(phAsset.pixelWidth), height: CGFloat(phAsset.pixelHeight))
let options = PHImageRequestOptions()
PHCachingImageManager.default().requestImage(for: phAsset, targetSize: targetSize, contentMode: .aspectFill, options: options) { (uiImage, info) in
DispatchQueue.main.async {
onComplete(uiImage)
}
}
}
}
}