ios - 当我快速单击图像时将 UIButtons 移回

Question

当我点击图像时，我需要将 UIButtons 移到 View 内，当我再次点击同一图像时，我需要将 UIButtons 移出屏幕。

当我点击一个 UIImage 时，4 个 UIButtons 在屏幕内移动，代码如下没有问题。

    func imageTapped(img: AnyObject)
        {UIView.animateWithDuration(0.5,
        delay: 0,
        options: [.CurveEaseInOut, .AllowUserInteraction],
        animations: {
            self.imageReceivedTrashCan.center = CGPoint(x: 30, y: 530)
            self.imageReceivedRightArrow.center = CGPoint(x: 285, y: 530)
            self.imageReceivedForward.center = CGPoint(x: 160, y: 530)
            self.imageReceivedCross.center = CGPoint(x: 30, y: 30)
        },
        completion: { finished in
            print("Objects moved!")   
    })
}

但是，我找不到当我再次单击同一图像时如何将 UIButton 移回原始位置的方法。感谢您的帮助。

Answer 1

即使这看起来真的很老派，没有任何自动布局，我随机猜测你不会同时更改中心的其他地方和所有中心:

func imageTapped(img: AnyObject) {
   if (self.imageReceivedTrashCan.center == CGPoint(x: 30, y: 530)) {
      UIView.animateWithDuration(0.5,
        delay: 0,
        options: [.CurveEaseInOut, .AllowUserInteraction],
        animations: {
            self.imageReceivedTrashCan.center = CGPoint(x: -30, y: -530)
            self.imageReceivedRightArrow.center = CGPoint(x: -285, y: -530)
            self.imageReceivedForward.center = CGPoint(x: -160, y: -530)
            self.imageReceivedCross.center = CGPoint(x: -30, y: -30)
        },
        completion: { finished in
            print("Objects moved!")   
    })
} else {
UIView.animateWithDuration(0.5,
        delay: 0,
        options: [.CurveEaseInOut, .AllowUserInteraction],
        animations: {
            self.imageReceivedTrashCan.center = CGPoint(x: 30, y: 530)
            self.imageReceivedRightArrow.center = CGPoint(x: 285, y: 530)
            self.imageReceivedForward.center = CGPoint(x: 160, y: 530)
            self.imageReceivedCross.center = CGPoint(x: 30, y: 30)
        },
        completion: { finished in
            print("Objects moved!")   
    })
}
}