sending image from popover to parent view - xcode

Question

I have a view that opens another view Controller as popover
the popover uses an image picker and displays the chosen image in an imageView.
The parent also has an imageView with an IBoutlet named profiler and before dismissing the popover i would like the parent view to get the chosen image.
How would i go about accessing parent and sending the image from the popover to the parent view
below is code from the popover view controller:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
picker.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//MARK: - Delegates
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject])
{
let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage //2
myImageView.contentMode = .scaleAspectFit //3
myImageView.image = chosenImage //4
myImageView.layer.borderWidth = 1
myImageView.layer.masksToBounds = false
myImageView.layer.borderColor = UIColor.black.cgColor
myImageView.layer.cornerRadius = myImageView.frame.height/4
myImageView.clipsToBounds = true
dismiss(animated:true, completion: nil) //5
}
thanks for any help rendered

Answer 1

Use a callback closure, it's less effort than delegate/protocol
In the popover view controller add a property
weak var callback : ((UIImage) -> ())?
Call it in didFinishPickingMediaWithInfo before dismiss
callback?(chosenImage)
In the parent view controller after creating the controller add
popoverViewController.callback = { image in
// do something with the image
}
popoverViewController is the popover view controller instance

Answer 2

you should create protocol
protocol PopOverImagePickerDelegate: NSObjectProtocol {
func didSelect(image: UIImage)
}
inside your PopoverViewController create
weak var delegate: PopOverImagePickerDelegate?
before navigating to PopoverViewController from ParentViewController set
popOverViewController.delegate = self
and then create
extension ParentViewController: PopOverImagePickerDelegate {
func didSelect(image: UIImage) {
//do stuff
}
}
and when image picked inside PopoverViewController just call
self.delegate?.didSelect(image: image)