UIWebView和触摸事件

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

如果要在点击视图时调用函数,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
}