Getting the link URL tapped in WKWebView

Question

I want to get the url of a tapped link in WKWebView. The links are in a custom format that will trigger certain actions in the app. e.g. http://my-site/help#deeplink-intercom. I am using KVO like so:

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!!")
    }

This works great when the link is tapped on the first time. However if I tap the same link twice in a row it won't report the link tap (obviously because the actual value hasn't changed). Is there a workaround to fix this so I can detect every tap and get the link? Any pointer on this would be great! Thanks!

Answer 1

You can use WKWebView delegate method. And don't forget to set the webview delegate to 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)
}