我想在WKWebView
中获取点按链接的网址。链接采用自定义格式,可触发应用中的某些操作。例如http://my-site/help#deeplink-intercom
。我这样使用KVO
:
override func loadView() {
let webConfiguration = WKWebViewConfiguration()
webView = WKWebView(frame: .zero, configuration: webConfiguration)
webView.navigationDelegate = self
webView.addObserver(self, forKeyPath: "URL", options: .new, context: nil)
view = webView
}
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if let newValue = change?[.newKey] {
print("url changed: \(newValue)")
}
print("Did tap!!")
}
第一次点击链接时,此功能非常有效。但是,如果我连续两次点击相同的链接,它将不会报告链接点击(显然因为实际值没有改变)。是否有解决方法来解决这个问题,以便我可以检测每个点击并获取链接?任何关于这个的指针都会很棒!谢谢!
答案 0 :(得分:18)
您可以使用WKWebView委托方法。并且不要忘记将webview委托设置为self:webview.navigationDelegate = self
func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: ((WKNavigationActionPolicy) -> Void)) {
switch navigationAction.navigationType {
case .LinkActivated:
if navigationAction.targetFrame == nil {
self.webView?.loadRequest(navigationAction.request)// It will load that link in same WKWebView
}
default:
break
}
if let url = navigationAction.request.URL {
print(url.absoluteString) // It will give the selected link URL
}
decisionHandler(.Allow)
}
答案 1 :(得分:7)
像这样更改addObserver
webView.addObserver(self, forKeyPath: "URL", options: [.new, .old], context: nil)
在observeValue
功能中,您可以获得两个值
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if let newValue = change?[.newKey] as? Int, let oldValue = change?[.oldKey] as? Int, newValue != oldValue {
//Value Changed
print(change?[.newKey])
}else{
//Value not Changed
print(change?[.oldKey])
}
}
答案 2 :(得分:0)
Swift 5.0
请记住要在WKWebView实例上设置navigationDelegate。
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
print(String(describing: navigationAction))
decisionHandler(.allow)
}