- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.webView = [[WKWebView alloc]initWithFrame:self.view.bounds];
    self.webView.UIDelegate = self;
    self.webView.navigationDelegate = self;
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://share.ishenzang.com:1234/mp/kidneyonline/wcmuserRecruitIndex"]];
    [self.webView loadRequest:request];
    [self.view addSubview:self.webView];
    
    
}
/// 接收到服务器跳转请求之后调用 (服务器端redirect)，不一定调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation{
    NSLog(@"--%@",navigation);
    
}
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {
    
    // 如果响应的地址是百度，则允许跳转
    if ([navigationResponse.response.URL.host.lowercaseString isEqual:@"www.baidu.com"]) {
        
        // 允许跳转
        decisionHandler(WKNavigationResponsePolicyCancel);
        return;
    }
    // 不允许跳转
    decisionHandler(WKNavigationResponsePolicyAllow);
}

/**
 *  在发送请求之前，决定是否跳转
 *
 *  @param webView          实现该代理的webview
 *  @param navigationAction 当前navigation
 *  @param decisionHandler  是否调转block
 */
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    
    // 如果请求的是百度地址，则延迟5s以后跳转
    if ([navigationAction.request.URL.host.lowercaseString isEqual:@"www.baidu.com"]) {
        
        //        // 延迟5s之后跳转
        //        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        //
        //            // 允许跳转
        //            decisionHandler(WKNavigationActionPolicyAllow);
        //        });
        
        // 允许跳转
        decisionHandler(WKNavigationActionPolicyCancel);
        return;
    }
    // 不允许跳转
    decisionHandler(WKNavigationActionPolicyAllow);
}


/// 2 页面开始加载
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
    NSLog(@"--%@",navigation);

}
/// 4 开始获取到网页内容时返回
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation{
}
/// 5 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
    NSLog(@"--%@",navigation);

}
/// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation{
    NSLog(@"--%@",navigation);
    //ddsdssd
}

- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)())completionHandler
{
    NSString *hostString = webView.URL.host;
    NSString *sender = [NSString stringWithFormat:@"%@表示", hostString];
    
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message message:sender preferredStyle:UIAlertControllerStyleAlert];
    
    [alertController addAction:[UIAlertAction actionWithTitle:@"哦" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        completionHandler();
    }]];
    [self presentViewController:alertController animated:YES completion:^{}];
}

- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString *))completionHandler
{
    NSString *hostString = webView.URL.host;
    NSString *sender = [NSString stringWithFormat:@"%@表示", hostString];
    
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:prompt message:sender preferredStyle:UIAlertControllerStyleAlert];
    [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        //textField.placeholder = defaultText;
        textField.text = defaultText;
    }];
    [alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
        NSString *input = ((UITextField *)alertController.textFields.firstObject).text;
        completionHandler(input);
    }]];
    [alertController addAction:[UIAlertAction actionWithTitle:@"提示" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        completionHandler(nil);
    }]];
    [self presentViewController:alertController animated:YES completion:^{}];
}

- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler
{
    NSString *hostString = webView.URL.host;
    NSString *sender = [NSString stringWithFormat:@"%@表示", hostString];
    
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message message:sender preferredStyle:UIAlertControllerStyleAlert];
    [alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
        completionHandler(YES);
    }]];
    [alertController addAction:[UIAlertAction actionWithTitle:@"即使" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        completionHandler(NO);
    }]];
    [self presentViewController:alertController animated:YES completion:^{}];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}