How i detect changes image in a UIImageView in Swift iOS

Question

I am using UIImageView In my UIViewController. In my case, I want to do if my image view changes then let me know if it was changed or not.

Answer 1

Use KVO.

class ViewController: UIViewController {
    
    @IBOutlet weak var imageView: UIImageView!
    
    private var imageChangeObservation: NSKeyValueObservation?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        imageChangeObservation = imageView.observe(\.image, options: [.new]) { [weak self] (object, change) in
            print("Image changed")
        }
    }
}