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）：

 import UIKit

 class ViewController: UIViewController{

     @IBOutlet weak var imageView: UIImageView!
     @IBAction func button(sender: UIButton) {
         imageView.animationImages = [UIImage(named: "p1")!,UIImage(named: "p2")!,UIImage(named: "p3")!,UIImage(named: "p4")!,UIImage(named: "p5")!]
         imageView.contentMode = .ScaleAspectFit
         imageView.animationDuration =
         imageView.startAnimating()

     }
     override func viewDidLoad() {
         super.viewDidLoad()

     }

     override func didReceiveMemoryWarning() {
         super.didReceiveMemoryWarning()
     }
 }

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）：

 import UIKit

 class ViewController: UIViewController{

     @IBOutlet weak var imageView: UIImageView!
     @IBAction func button(sender: UIButton) {
 //        imageView.animationImages = [UIImage(named: "p1")!,UIImage(named: "p2")!,UIImage(named: "p3")!,UIImage(named: "p4")!,UIImage(named: "p5")!]
         imageView.animationImages = (...).map{
             UIImage(named: "p\($0)")!
         }
         imageView.contentMode = .ScaleAspectFit
         imageView.animationDuration =
         imageView.startAnimating()

     }
     override func viewDidLoad() {
         super.viewDidLoad()

     }

     override func didReceiveMemoryWarning() {
         super.didReceiveMemoryWarning()
     }
 }