Question

我面临一些奇怪的问题，这是我的注册平移手势的代码

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public func registerGesture(_ view: UIView) { self.gesture = UIPanGestureRecognizer(target: self, action: #selector(handleGesture(_:))) self.gesture?.minimumNumberOfTouches = 1 self.gesture?.maximumNumberOfTouches = 1 self.gesture?.delegate = self view.addGestureRecognizer(self.gesture!) }委托方法未被调用。

UIPanGestureRecognizer

}

相反，如果我调试代码并打印行extension PanGestureHandler : UIGestureRecognizerDelegate { public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool { guard let g = self.gesture else { return false } guard g.view is UIScrollView else { return false } return true } public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer) -> Bool { return false }，则会调用委托方法。

每次我需要打印上述线路才能工作。请帮帮我，谢谢

Answer 1

对于上述问题，我通过添加以下sharedinstace修复了

   static let sharedInstance : PanGestureHandler = {
    let instance = PanGestureHandler()
    return instance
    }()

注册pangesture以供查看，

    let gestureInstance = PanGestureHandler.sharedInstance
    gestureInstance.registerGesture(self.view)

Swift：未调用UIPanGestureRecognizer委托方法

1 个答案: