我正在尝试为我的视图控制器实现屏幕边缘平移手势。但问题是,如果尝试为两条边添加边缘平移手势(UIRectEdge.left,UIRectEdge.right),
let screenEdgePanGesture = UIScreenEdgePanGestureRecognizer.init(target: self, action: #selector(self.didPanningScreen))
screenEdgePanGesture.edges = [.right, .left]
screenEdgePanGesture.delegate = self
self.view.addGestureRecognizer(screenEdgePanGesture)
选择器方法不调用。但边缘平移手势正在为一个边缘工作,即
let screenEdgePanGesture = UIScreenEdgePanGestureRecognizer.init(target: self, action: #selector(self.didPanningScreen))
screenEdgePanGesture.edges = .right
screenEdgePanGesture.delegate = self
self.view.addGestureRecognizer(screenEdgePanGesture)
是的,你是对的,UIScreenEdgePanGestureRecognizer
edges
只接受/工作一个值,所以你需要为左右边缘平移创建两个不同的功能。
斯威夫特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")
}