Question

我想在视图中使用自定义触摸事件。有一个Web视图，它是此视图的子视图。我重写了touchBegan和其他功能，但它没有运行。

Answer 1

如果您想在点击视图时调用某个功能，可以使用UITapGestureRecognizer

override func viewDidLoad() {
    super.viewDidLoad()
    let tapRecognizer = UITapGestureRecognizer(target: view, action: "handleSingleTap:")
    tapRecognizer.numberOfTapsRequired = 1
    self.view.addGestureRecognizer(tapRecognizer)
}

func handleSingleTap(recognizer: UITapGestureRecognizer) {
    //Do something here with the gesture
}

对于Swift 3：

override func viewDidLoad() {
    super.viewDidLoad()
    let tapRecognizer = UITapGestureRecognizer(target: view, action: #selector(handleSingleTap))
    tapRecognizer.numberOfTapsRequired = 1
    self.view.addGestureRecognizer(tapRecognizer)
}

@objc func handleSingleTap(recognizer: UITapGestureRecognizer) {
    //Do something here with the gesture
}

UIWebView和触摸事件

1 个答案: