webViewDidStartLoad not working

Question

webViewDidStartLoad and webViewDidFinishLoad are not working.

What I have already done:

1. webView.delegate = self;
2. added UIWebViewDelegate
3. placed the code in viewDidAppear.

Here is the code:

func webViewDidStartLoad(webView: UIWebView!) {
            print("Webview started Loading")
        }

        func webViewDidFinishLoad(webView: UIWebView!) {
            print("Webview did finish load")
        }

Answer 1

Update for Swift 3

        let url = "http://apple.com"

    let requestURL = URL(string:url)
    let request = URLRequest(url: requestURL!)
    webView.delegate = self
    webView.loadRequest(request)
}

func webViewDidStartLoad(_ webView: UIWebView) {
    print("Webview started Loading")
}

func webViewDidFinishLoad(_ webView: UIWebView) {
    print("Webview did finish load")
}

}