如果您想通过单击来执行任何动作并长按，则可以通过以下方式将手势添加到按钮中：

@IBOutlet weak var btn: UIButton!

override func viewDidLoad() {

    let tapGesture = UITapGestureRecognizer(target: self, #selector (tap))  //Tap function will call when user tap on button
    let longGesture = UILongPressGestureRecognizer(target: self, #selector(long))  //Long function will call when user long press on button.
    tapGesture.numberOfTapsRequired = 1
    btn.addGestureRecognizer(tapGesture)
    btn.addGestureRecognizer(longGesture)
}

@objc func tap() {

    print("Tap happend")
}

@objc func long() {

    print("Long press")
}

这样，您可以为单个按钮添加多种方法，而您只需要为此按钮设置插座即可。