swif解决手势冲突

有时候我们在一个大的透明view上添加一个小的view，需要点击透明view时remove掉，但是我们不希望触碰到小的view上也remove就需要实现

UIGestureRecognizerDelegate：

private func addGesture() {

let tapGesture = UITapGestureRecognizer(target: self, action: Selector("handleTapGesture"))

tapGesture.delegate = self

self.addGestureRecognizer(tapGesture)

}

//MARK:UIGestureRecognizerDelegate  判断当前的view具体是谁

func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {

if touch.view!.isDescendantOfView(点击时候不消失的小view) {

return false

}

return true

}