Swift版 ScrollView和UITouch事件冲突

OC版地址:http://www.jb51.cc/article/p-eojmeebq-em.html

extension UIScrollView {
    override public func  touchesBegan(touches: Set<NSObject>,withEvent event: UIEvent) {
        self.nextResponder()?.touchesBegan(touches,withEvent: event)
    }
    public override func touchesMoved(touches: Set<NSObject>,withEvent event: UIEvent) {
        self.nextResponder()?.touchesMoved(touches,withEvent: event)
    }
    public override func touchesEnded(touches: Set<NSObject>,withEvent event: UIEvent) {
        self.nextResponder()?.touchesEnded(touches,withEvent: event)

    }
}