如何为数组中的每个元素设置动画

Question

希望你们都做得很好

我有编程按钮从数组中获取图像，该按钮有两个元素，此按钮与计时器一起使用

func monsterButtons () {

    movingBtn.isHidden = true


    movingBtn = UIButton(frame: CGRect(x: randomValueBetween(min: 0, max: 250), y: randomValueBetween(min: 200, max: 500), width: 100, height: 100))
    movingBtn.contentMode = .scaleAspectFit
    movingBtn.imageView!.contentMode = .scaleAspectFit
    movingBtn.setImage(array_monesterImage[randomValueBetween(min: 0, max: imageIndex-1)], for: .normal)
    movingBtn.addTarget(self, action: #selector(buttonAction), for: .touchUpInside)

    view.addSubview(movingBtn)

我正在尝试动画array_monesterImage中的每个元素，所以我添加了这段代码

UIView.animate(withDuration: 1, delay: 0, options: [.repeat], animations: {


        let chknArray:[UIImage] = [UIImage (named: "chkn1.png")!,
                                   UIImage (named: "chkn2.png")!,
                                   UIImage (named: "chkn3.png")!,
                                   UIImage (named: "chkn4.png")!]

        self.movingBtn.imageView!.animationImages = chknArray
        self.movingBtn.imageView!.animationDuration = 1.0
        self.movingBtn.imageView!.startAnimating()


        let crzyYelowArray:[UIImage] = [UIImage (named: "crzyYelow1.png")!,
                                        UIImage (named: "crzyYelow1.png")!,
                                        UIImage (named: "crzyYelow1.png")!,
                                        UIImage (named: "crzyYelow1.png")!]

        self.movingBtn.imageView!.animationImages = crzyYelowArray
        self.movingBtn.imageView!.animationDuration = 1.0
        self.movingBtn.imageView!.startAnimating()

但它不起作用..是否有另一种方法来动画array_monesterImage中的元素？