通过屏幕迅速移动一个像素(Move a pixel through screen with swif

我感兴趣的是具有和其它目的（静态的，不一定是动态的）一个VC和除此之外，我想有一个像素（一个或四个，取决于它是否能够看到人眼）周围的边界移动屏幕的（因此在边界）。

我附上什么，我需要一张照片：

所以，我需要的是“像素”移动indefinetely做一个正方形，我还需要知道它在哪里做的东西在我的代码（SWIFT）

您可以使用一个解决方案的东西

斯威夫特2

UIView.animateKeyframesWithDuration(4, delay: 0.0, options: UIViewKeyframeAnimationOptions.Repeat, animations: { () -> Void in

    UIView.addKeyframeWithRelativeStartTime(0, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPointMake(0, 100)
    })
    UIView.addKeyframeWithRelativeStartTime(1/4, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPointMake(100, 100)
    })
    UIView.addKeyframeWithRelativeStartTime(2/4, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPointMake(100, 0)
    })

    UIView.addKeyframeWithRelativeStartTime(3/4, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPointMake(0, 0)
    })

}, completion: nil)

斯威夫特3,4,5

UIView.animateKeyframes(withDuration: 4, delay: 0.0, options: UIView.KeyframeAnimationOptions.repeat, animations: { () -> Void in

    UIView.addKeyframe(withRelativeStartTime: 0, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPoint(x: 0, y: 100)
    })
    UIView.addKeyframe(withRelativeStartTime: 1/4, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPoint(x: 100, y: 100)
    })
    UIView.addKeyframe(withRelativeStartTime: 2/4, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPoint(x: 100, y: 0)
    })

    UIView.addKeyframe(withRelativeStartTime: 3/4, relativeDuration: 1/4, animations: { () -> Void in
        self.aView.center = CGPoint(x: 0, y: 0)
    })

}, completion: nil)

该CGPoint值将屏幕的4个角落，你希望你UIView要移动的对象。