ios - 未检测到滑动(Swift/iOS9)

Question

在我的viewDidLoad中:

let swipeLeft = UISwipeGestureRecognizer(target: self, action: Selector("leftSwiped"))
        swipeLeft.direction = .Left
        self.view.addGestureRecognizer(swipeLeft

)

func leftSwiped()
    {
        print("here")
    }

“here”永远不会被打印。我尝试查看其他指南，但代码的核心与我的相同。我认为我不应该对任何东西进行子类化。我可以得到一些帮助吗？

Answer 1

let swipeLeft = UISwipeGestureRecognizer(target: self, action: Selector("leftSwiped"))

名称函数“leftSwiped”后缺少“:”

尝试源代码:

let swipeLeft = UISwipeGestureRecognizer(target: self, action: Selector("leftSwiped:"))

        swipeLeft.direction = .Left

        self.view.addGestureRecognizer(swipeLeft)