Detect UIImageView Touch in Swift - ios

Question

How would you detect and run an action when a UIImageView is touched?
This is the code that I have so far:
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
var touch: UITouch = UITouch()
if touch.view == profileImage {
println("image touched")
}
}

Answer 1

You can detect touches on a UIImageView by adding a UITapGestureRecognizer to it.
It's important to note that by default, a UIImageView has its isUserInteractionEnabled property set to false, so you must set it explicitly in storyboard or programmatically.
override func viewDidLoad() {
super.viewDidLoad()
imageView.isUserInteractionEnabled = true
imageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(imageTapped)))
}
#objc private func imageTapped(_ recognizer: UITapGestureRecognizer) {
print("image tapped")
}

Answer 2

You can put an UITapGestureRecognizer inside your UIImageView using Interface Builder or in code (as you want), I prefer the first. Then you can put an #IBAction and handle the tap inside your UIImageView, Don't forget to set the UserInteractionEnabled to true in Interface Builder or in code.
#IBAction func imageTapped(sender: AnyObject) {
println("Image Tapped.")
}
I hope this help you.

Answer 3

Swift 3
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch:UITouch = touches.first!
if touch.view == profileImage {
println("image touched")
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch:UITouch = touches.first!
if touch.view == profileImage {
println("image released")
}
}