Swift ImageView图像视图

import UIKitclass ViewController: UIViewController {    //ImageViewm控件绑定    @IBOutlet weak var Img: UIImageView!    //Button控件绑定    @IBAction func play(sender: UIButton) {                //Img.animationImages = [UIImage(named: "s1"),UIImage(named: "s2"),UIImage(named: "s3")]        //自动播放图片源        Img.animationImages = (1...3).map {            UIImage(named: "s\($0)")!        }        //播放次数        Img.animationRepeatCount = 1        //图片填充模式，原比例填充        Img.contentMode = .ScaleAspectFit        //播放时间间隔        Img.animationDuration = 6        //开始播放图片        Img.startAnimating()            }            override func viewDidLoad() {        super.viewDidLoad()        // Do any additional setup after loading the view, typically from a nib.    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()        // Dispose of any resources that can be recreated.    }}