iOS Swift. How to detect double OR triple tap with UITapGestureRecognizer

For detecting touches in iOS application we use UITapGestureRecognizer. When we need react only on special number of touches, for example two or three, we must simply specify this parameter for gesture recognizer object.

When number of touches is 3

let tapGestureRecognizer = UITapGestureRecognizer(target: self,
                                                          action: #selector(imageTappedTriple))
tapGestureRecognizer.numberOfTapsRequired = 3

When number of touches is 2

let tapGestureRecognizer = UITapGestureRecognizer(target: self,
                                                          action: #selector(imageTappedDouble))
tapGestureRecognizer.numberOfTapsRequired = 2

Important to remember is make enable image for interaction with user.

self.imageView.isUserInteractionEnabled = true

Full code.

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet var imageView: UIImageView!

    override func viewDidLoad() {
        super.viewDidLoad()
        let tapGestureRecognizer = UITapGestureRecognizer(target: self,
                                                          action: #selector(imageTappedTriple))
        tapGestureRecognizer.numberOfTapsRequired = 3
        self.imageView.isUserInteractionEnabled = true
        self.imageView.addGestureRecognizer(tapGestureRecognizer)
    }
    
    @objc func imageTappedTriple(sender: UITapGestureRecognizer) {
        print("Image was tapped three times!")
    }

}