Ios 快速缩小动画

我正在尝试为UIImageView制作一些动画（仅缩小）

1-我将框架设置为大于屏幕，使其放大如下：

private lazy var imageView: UIImageView = {
    let image = UIImageView()
    image.frame = CGRect(x: 0, y: 0, width: view.frame.width + 300, height: view.frame.height + 300)
    image.center = view.center
    image.image = UIImage(named: "1111")
    image.contentMode = .scaleAspectFill
    return image
}()

func firstAnimation() {
    UIView.animate(withDuration: 15, animations: {

        // HERE 
        self.imageView.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)

    }) { (finished) in
        self.secondAnimation()
    }
}

我想让画面恢复到屏幕大小，如下所示：

private lazy var imageView: UIImageView = {
    let image = UIImageView()
    image.frame = CGRect(x: 0, y: 0, width: view.frame.width + 300, height: view.frame.height + 300)
    image.center = view.center
    image.image = UIImage(named: "1111")
    image.contentMode = .scaleAspectFill
    return image
}()

func firstAnimation() {
    UIView.animate(withDuration: 15, animations: {

        // HERE 
        self.imageView.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)

    }) { (finished) in
        self.secondAnimation()
    }
}

不幸的是，我没有和我一起工作

下面是完整的类代码：

Swift 4+ 使用

CGAffineTransform.identity

将图像调整为第一个

identity

UIView.animate(withDuration: 0.5, delay: 0.0, options: UIViewAnimationOptions.curveEaseIn, animations: {
        
       // HERE
       self.imageview.transform = CGAffineTransform.identity.scaledBy(x: 2, y: 2) // Scale your image

 }) { (finished) in
     UIView.animate(withDuration: 1, animations: {
       
      self.imageview.transform = CGAffineTransform.identity // undo in 1 seconds

   })
}

放大代码：

[UIView animateWithDuration:1.0动画：^{
imgv.transform=CGAffineTransformMakeScale（1.0,1.0）；
}完成：^（布尔完成）{
}];

缩小的代码：

[UIView animateWithDuration:1.0动画：^{
imgv.transform=CGAffineTransformMakeScale（0.1,0.1）；
}完成：^（布尔完成）{
imgv.transform=CGAffineTransformMakeScale（.0，.0）；
}];

---

这里的

imvv

是我的

UIImageview

对象。可以将其替换为视图对象。在

缩小

代码中，我们通过

缩放

将视图隐藏到

0

我只需要将其缩小即可查看

extension UIView {
      UIView.animate(withDuration: 0.5, delay: 0.0, options: .curveEaseIn, animations: {
          self.transform = CGAffineTransform.identity.scaledBy(x: 1.1, y: 1.1)
      }) { (finished) in
          UIView.animate(withDuration: 1, animations: {
          self.transform = CGAffineTransform.identity
      })
}