I use a PHPickerViewController
to select profile images and want the first photo selected to be a user’s hero image.
Whenever I return the selected results, the order in which I selected is not reflected.
I’ve double checked my config and looked at existing SO answers, but no solution has worked and would appreciate any guidance that does not involve using a 3rd party!
//Setup code
var config = PHPickerConfiguration()
config.selectionLimit = 3
config.filter = .images
config.selection = .ordered
let picker = PHPickerViewController(configuration: config)
picker.delegate = self
//Delegate handler
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
guard !results.isEmpty else {
picker.dismiss(animated: true)
return
}
self.photos = []
var tempImages: [Int: UIImage] = [:]
let dispatchGroup = DispatchGroup()
for (index, result) in results.enumerated() {
dispatchGroup.enter() // Enter the group
result.itemProvider.loadObject(ofClass: UIImage.self) { [weak self] object, error in
defer { dispatchGroup.leave() }
guard let self = self else { return }
if let image = object as? UIImage {
tempImages[index] = image
}
}
}
dispatchGroup.notify(queue: .main) { [weak self] in
guard let self = self else { return }
for index in 0..<tempImages.keys.count {
if let image = tempImages[index] {
self.photos?.append(image)
}
}
}
picker.dismiss(animated: true)
}