Ios 水平滑入菜单

我对iOS/Swift开发非常陌生，我正在尝试为用户设置实现一个水平滑入菜单

我已经设法使它工作，我面临的问题是，菜单从右向左滑动，但它应该反过来，即从左向右。我尝试过使用正值和负值，但我仍然对这些CG属性如何在x轴、y轴等轴上工作感到困惑

这是我的代码，负责显示菜单：

     private func showSettingsMenu(){
        if let window = UIApplication.shared.keyWindow {

        blackView.backgroundColor = UIColor(white: 0, alpha: 0.7)

        blackView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleDismiss)))

        window.addSubview(blackView)
        window.addSubview(collectionView)

        blackView.frame = window.frame
        blackView.alpha = 0

        let collectionWidth: CGFloat = window.frame.width * 0.75
        let x = window.frame.width - collectionWidth

        collectionView.frame = CGRect(x: window.frame.width, y: 0, width: collectionWidth, height: window.frame.height)

        UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {

            self.blackView.alpha = 1
            self.collectionView.frame = CGRect(x: x, y: 0, width: self.collectionView.frame.width, height: self.collectionView.frame.height)

        }, completion: nil)
    }
}

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问题在于，您正在将初始x位置设置为屏幕宽度，将最终x位置设置为屏幕宽度的1/4，以便屏幕从右向左滑动：

let collectionWidth: CGFloat = window.frame.width * 0.75

collectionView.frame = CGRect(x: -1 * collectionWidth , y: 0, width: collectionWidth, height: window.frame.height)

UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {

   self.blackView.alpha = 1

   self.collectionView.frame = CGRect(x: 0, y: 0, width: self.collectionView.frame.width, height: self.collectionView.frame.height)

}, completion: nil)

编辑变更行

 collectionView.frame = CGRect(x: window.frame.width, y: 0, width: collectionWidth, height: window.frame.height)

到

///内部动画更改线

 self.collectionView.frame = CGRect(x: x, y: 0, width: self.collectionView.frame.width, height: self.collectionView.frame.height)

到

---

您可以提供修复吗？答案包含修复更改x此处collectionView.frame=CGRectx:-1*collectionWidth，y:0，width:collectionWidth，height:window.frame.height，在UIView.animate之前的行中

 self.collectionView.frame = CGRect(x: x, y: 0, width: self.collectionView.frame.width, height: self.collectionView.frame.height)

 self.collectionView.frame = CGRect(x: 0, y: 0, width: self.collectionView.frame.width, height: self.collectionView.frame.height)