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.

Theodoratheodore

Change means image in imageview changes? like you want to detect when image changes. – Grisby

How is it going to change? and where do you need to detect that? Can you explain a bit about your goal? – Assentation

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")
        }
    }
}

Zigrang