IOS UILongPressGestureRecognizer 长按手势

1 override func viewDidLoad() {
2 super.viewDidLoad()
3 // Do any additional setup after loading the view,
typically from a nib.
4 let rect = CGRect(x：0, y：80, width：320, height：

5 self.imageView = UIImageView(frame：rect)
6
7 let image = UIImage(named：“lock”)
8 imageView.image = image
9
10 imageView.isUserInteractionEnabled = true
11 self.view.addSubview(self.imageView)
12
13 let guesture = UILongPressGestureRecognizer(target：
self, action：#selector(ViewController.longPress(：)))
14 guesture.minimumPressDuration = 1.0
15 guesture.allowableMovement = 20.0
16 imageView.addGestureRecognizer(guesture)
17 }
18 func longPress( gusture：
UILongPressGestureRecognizer)
19 {
20 if(gusture.state == UIGestureRecognizerState.began)
21 {
22 let image = UIImage(named：“unlock”)
23 imageView.image = image
24 }
25 }