using KVO to observe WKWebView's URL property not work in iOS 10

Question

I use WKWebView to load my webpage. When user click a button in webpage, my webpage will open a custom schema URL (e.g. asfle://download?media_id=1). And I use KVO to obser

Answer 1

I found the solution. Instead of using KVO, use delegate to detect opening URL.

override func viewDidLoad() {
        super.viewDidLoad()

        webView.navigationDelegate = self
    }

func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: (WKNavigationActionPolicy) -> Void) {
    print("url:\(navigationAction.request.URL)")
    decisionHandler(.Allow)
    }