单击按钮隐藏/显示带有动画的uiimageview

Question

当我单击按钮时，我的图像将随着动画移出屏幕，而当我再次单击该按钮时，该如何恢复呢？

Answer 1

在button单击事件上，只需根据需要为imageView x coordinate of origin设置动画。

例：

@IBAction func onTapButton(_ sender: UIButton)
{
    if sender.isSelected
    {
        UIView.animate(withDuration: 2.0, animations: {
            self.imageView.frame.origin.x = 0.0
        })
    }
    else
    {
        UIView.animate(withDuration: 2.0, animations: {
            self.imageView.frame.origin.x = UIScreen.main.bounds.width
        })
    }
    sender.isSelected = !sender.isSelected
}

上面的代码将按以下方式工作：

1. selecting button ， imageView's x coordinate of origin移动到屏幕的extreme right （ UIScreen.main.bounds.width ）

2. de-selecting button ， imageView's x coordinate of origin移动到屏幕的extreme left （ 0.0 ）

Answer 2

使用此代码向左移动-

func moveToLeft()
{
    var frame = imageView.frame
    frame.origin.x = -imageView.frame.size.width //Adjust this value according to your need
    UIView.animate(withDuration: 0.3, delay: 0.0, options: .curveEaseOut, animations: {() -> Void in
        self.imageView.frame = frame
    }, completion: {(_ finished: Bool) -> Void in
        /*done*/
    })
}

使用此代码向右移动-

func moveToRight()
{
    var frame = imageView.frame
    frame.origin.x = 0 //Adjust this value according to your need
    UIView.animate(withDuration: 0.3, delay: 0.0, options: .curveEaseOut, animations: {() -> Void in
        self.imageView.frame = frame
    }, completion: {(_ finished: Bool) -> Void in
        /*done*/
    })
}