ios - UIScreenEdgePanGestureRecognizer

我正在尝试为我的视图控制器实现屏幕边缘平移手势。但是问题是，如果尝试为两个边缘(UIRectEdge.left，UIRectEdge.right)添加边缘平移手势，则

let screenEdgePanGesture = UIScreenEdgePanGestureRecognizer.init(target: self, action: #selector(self.didPanningScreen))
screenEdgePanGesture.edges = [.right, .left]
screenEdgePanGesture.delegate = self
self.view.addGestureRecognizer(screenEdgePanGesture)

选择器方法未调用。但是边缘平移手势只能作用于一个边缘，即

let screenEdgePanGesture = UIScreenEdgePanGestureRecognizer.init(target: self, action: #selector(self.didPanningScreen))
screenEdgePanGesture.edges = .right
screenEdgePanGesture.delegate = self
self.view.addGestureRecognizer(screenEdgePanGesture)

最佳答案

是的，您是对的，UIScreenEdgePanGestureRecognizer edges仅接受/使用一个值，因此您需要为左右边缘平移创建两个不同的功能。

迅捷4

let screenEdgePanGestureRight = UIScreenEdgePanGestureRecognizer.init(target: self, action: #selector(self.didPanningScreenRight(_:)))
screenEdgePanGestureRight.edges = .right
screenEdgePanGestureRight.delegate = self
self.view.addGestureRecognizer(screenEdgePanGestureRight)

let screenEdgePanGestureLeft = UIScreenEdgePanGestureRecognizer.init(target: self, action: #selector(self.didPanningScreenLeft(_:)))
screenEdgePanGestureLeft.edges = .left
screenEdgePanGestureLeft.delegate = self
self.view.addGestureRecognizer(screenEdgePanGestureLeft)

@objc func didPanningScreenRight(_ recognizer: UIScreenEdgePanGestureRecognizer)  {
    print("Right edge penning")
}

@objc func didPanningScreenLeft(_ recognizer: UIScreenEdgePanGestureRecognizer)  {
    print("Left edge penning")
}

关于ios - UIScreenEdgePanGestureRecognizer，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/54689518/