WKWebView Content loaded function never get called

You are not setting the navigationDelegate. Set it and it should be fine.

class ViewController: UIViewController, WKNavigationDelegate {  override func viewDidLoad() {    super.viewDidLoad()    let noLayoutFormatOptions = NSLayoutFormatOptions(rawValue: 0)    let webView = WKWebView(frame: CGRectZero, configuration: WKWebViewConfiguration())    webView.setTranslatesAutoresizingMaskIntoConstraints(false)    webView.navigationDelegate = self    view.addSubview(webView)    view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[webView]|", options: noLayoutFormatOptions, metrics: nil, views: ["webView": webView]))    view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[webView]|", options: noLayoutFormatOptions, metrics: nil, views: ["webView": webView]))    let url = NSURL(string: "http://google.com")    let request = NSURLRequest(URL: url)    webView.loadRequest(request)  }  func webView(webView: WKWebView!, didFinishNavigation navigation: WKNavigation!) {    print("Finished navigating to url \(webView.url)");  }}

And here is a bit better version with Swift 3.

class ViewController: UIViewController {    override func viewDidLoad() {        super.viewDidLoad()        let configuration = WKWebViewConfiguration()        let webView = WKWebView(frame: .zero, configuration: configuration)        webView.translatesAutoresizingMaskIntoConstraints = false        webView.navigationDelegate = self        view.addSubview(webView)        [webView.topAnchor.constraint(equalTo: view.topAnchor),         webView.bottomAnchor.constraint(equalTo: view.bottomAnchor),         webView.leftAnchor.constraint(equalTo: view.leftAnchor),         webView.rightAnchor.constraint(equalTo: view.rightAnchor)].forEach  { anchor in            anchor.isActive = true        }        if let url = URL(string: "https://google.com/search?q=westworld") {            webView.load(URLRequest(url: url))        }    }}  extension ViewController: WKNavigationDelegate {    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {        print("Finished navigating to url \(webView.url)")    }}

I made a simple mistake for not adding a subview to my View

view.addSubview(webView)

I have created a webView programmatically, here is the complete code

1.. import WebKit

2.. func viewDidLoad()

let request = URLRequest(url: url)let webView = WKWebView(frame: view.frame)view.addSubview(webView)webView.navigationDelegate = selfwebView.load(request)

3.. Implement extension for delegate methods

  // MARK: WKWebViewextension ViewController: WKNavigationDelegate {        func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {        print("Start Request")    }        func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {        print("Failed Request")    }        func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {        print("Finished Request")    }