如何从webview请求获取标题，正文（POST类型），在android上响应

Question

我在Android应用程序上使用webview。 我想在webview加载时从响应请求中获取标题和正文（POST参数）信息。

在我的iOS应用程序中，我已经使用此代码获取它们：

    - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {

        NSString *username = [self queryDictionary:request][@"username"];

        if (username) {
            self.userid = username;
        }
        return YES;
    }


    - (void)webViewDidFinishLoad:(UIWebView *)webView {

        NSCachedURLResponse *resp = [[NSURLCache sharedURLCache] cachedResponseForRequest:webView.request];
        NSString *status = [(NSHTTPURLResponse *)resp.response allHeaderFields][@"Authentication"];
        if ([status isEqualToString:@"OK"] && ![self.userid isEqualToString:@""]) {
            // TODO: 서버 API 필요
            AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
            NSLog(@"send to server with user id (%@), token %@ ", self.userid, appDelegate.registrationToken);

        } else if ([status isEqualToString:@"failuer"]) {
            self.userid = @"";
        }
    }

如何在Android上实现相同的结果？