编辑代码

//3.3.2 UIView动画播放方法
//1.UIView的旋转方法
let iv = self.view.viewWithTag(4)
UIView.animate(withDuration: 2,animatons:{
    iv.transfrom = iv.transfrom.rotated(by: CGFloat(360))
})
//2.UIView的平移动画
let iv =self.view.view(4)!
UIView.animate(withDuration: 2,animatons:{
    iv.frame.orign.x += 100
    if iv.frame.origin.x > self.view.feame.size.width{
        iv.frame.origin.x = 0
    }
})
//3.UIView的缩放动画
let iv =self.view.viewWithTag(4)!
UIView.animate(withDuration: 2,animatons{
    iv.transfrom=CGAffineTranfrom(scaleX: 0.8,y: 0.8)
})
//4.UIView的透明度动画
let iv = self.view.viewWithTag(4)!
UIView.animate(withDuration: 2,animatons{
    iv.alpha = 0.1
})