swift--动画效果

for循环创建4*4个view，然后对立面的所有view进行动画，这里列集中动画的效果：

1，旋转动画

        for tile in backgrounds{

            //现将数字块大小职位原始尺寸的1/10
            tile.layer.setAffineTransform(CGAffineTransform(scaleX: 0.1,y: 0.1))

            //设置动画效果，动画时间长度1秒
            UIView.animate(withDuration: 1, delay: 0.01, options: [], animations: { 

            }, completion: { (finished) in

                UIView.animate(withDuration: 1, animations: {
                    //完成动画时，数字块复原
                    tile.layer.setAffineTransform(CGAffineTransform.identity)
                })

            })

        }

2，不透明到透明的效果

        for tile in backgrounds {

            tile.alpha = 0

            //设置动画效果，动画时间长度1秒
            UIView.animate(withDuration: 1, delay: 0.01, options: [.curveEaseInOut], animations: {

            }, completion: { (finished) in
                UIView.animate(withDuration: 1, animations: {
                    tile.alpha = 1
                })
            })

        }

3，从小到大的效果

        for tile in backgrounds {

            //现将数字快大小之前原始尺寸的1/10
            tile.layer.setAffineTransform(CGAffineTransform(scaleX:0.1,y:0.1))

            //设置动画效果，动画时间长度1秒
            UIView.animate(withDuration: 1, delay: 0.01, options: [], animations: {
                tile.layer.setAffineTransform(CGAffineTransform(scaleX:1,y:1))
            }, completion: { (finished) in
                UIView.animate(withDuration: 0.08, animations: {
                    tile.layer.setAffineTransform(CGAffineTransform.identity)
                })
            })

        }

记录下三种动画效果