小波说雨燕 第三季 构建 swift UI 之 UI组件集－视图集（五）Image View视图 学习笔记

留下两个问题：1、后面涉及到的异常不知道原因。2、动态图片到了程序里面就不动了。

然后：

上面是有问题的，下面是没有问题的了。

代码（另外简单写的代码，纠正了那个错误）：

 1 import UIKit
 2  3 class ViewController: UIViewController{
 4  5 @IBOutlet weak var imageView: UIImageView!
 6  @IBAction func button(sender: UIButton) {
 7 imageView.animationImages = [UIImage(named: "p1")!,UIImage(named: "p2")!,UIImage(named: "p3")!,UIImage(named: "p4")!,UIImage(named: "p5")!]
 8 imageView.contentMode = .ScaleAspectFit
 9 imageView.animationDuration = 10 10  imageView.startAnimating()
11 12  }
13 override func viewDidLoad() {
14  super.viewDidLoad()
15 16  }
17 18 override func didReceiveMemoryWarning() {
19  super.didReceiveMemoryWarning()
20  }
21 }

根据小波老师改进后的方法（如果有100张，如果一张一张添加创建对象，就不好了）：

 1 import UIKit
 2  3 class ViewController: UIViewController{
 4  5 @IBOutlet weak var imageView: UIImageView!
 6  @IBAction func button(sender: UIButton) {
 7 // imageView.animationImages = [UIImage(named: "p1")!,UIImage(named: "p2")!,UIImage(named: "p3")!,UIImage(named: "p4")!,UIImage(named: "p5")!]  8 imageView.animationImages = (1...5).map{
 9 UIImage(named: "p\($0)")!
10  }
11 imageView.contentMode = .ScaleAspectFit
12 imageView.animationDuration = 10 13  imageView.startAnimating()
14 15  }
16 override func viewDidLoad() {
17  super.viewDidLoad()
18 19  }
20 21 override func didReceiveMemoryWarning() {
22  super.didReceiveMemoryWarning()
23  }
24 }