参考http://blog.csdn.net/zhaoweixing1989/article/details/13021513

(1)获取加载页面的URL地址，加载开始，加载完成，加载失败的监听

</pre><p><span style="font-size:18px">让当前的ViewController实现</span>UIWebViewDelegate代理然后实现代理中的方法：</p><pre code_snippet_id="1895631" snippet_file_name="blog_20160923_2_6890158" name="code" class="html">//使用UIWebView代理方法
    func webView(webView: UIWebView,shouldStartLoadWithRequest request: NSURLRequest,navigationType: UIWebViewNavigationType) -> Bool {
        print(request.URL)
        if request.URL!.absoluteString.hasPrefix("app://") {
            //解析app://report?userId=0001逻辑
            return false
        }
        return true
    }
    func webViewDidStartLoad(webView: UIWebView) {
    //开始加载
         //activityLoadingView.startAnimating()
        // print(self.artworkWebView.request?.URL?.absoluteString)
    }
    func webView(webView: UIWebView,didFailLoadWithError error: NSError?) {
    //加载失败
       
    }
    func webViewDidFinishLoad(webView: UIWebView) {
    //加载成功，加载完成
       // activityLoadingView.stopAnimating()
        
    }