ios png序列动画

今天做png 序列动画, 记录下

var images_1 = [UIImage]()

for i in 1 ... 60{
    let image = UIImage(named: "imageName\(i)")
    images_1.append(image!)
}
var imageView = UIImageView(frame: frame)
imageView.animationImages = images_1
imageView.animationDuration = 3//一次动画时间
imageView.animationRepeatCount = 0//次数,0为一直播放
imageView.startAnimating()
//开始 stop 停止
self.view.addSubview(imageView)