Capture redirect url in wkwebview in ios

Question

How do I capture the redirection url in when using WKWebView like if a webpage redirects to another page on submitting the username and password or some other data. I need t

Answer 1

For me, using decidePolicyFor navigation delegate's method didn't work.

It didn't work because WKNavigationDelegate's method

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void)

will only be called when there is a full-page reload. To be able to catch all WKWebView's request URL changes, a Key-Value observer will have to be placed on the WKWebView's URL property.

First, in viewDidLoad add:

webView.addObserver(self, forKeyPath: "URL", options: .new, context: nil)

Second, add observeValue method

override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
        if keyPath == #keyPath(WKWebView.url) {
            // Whenever URL changes, it can be accessed via WKWebView instance
            let url = webView.url
        }
    }