Android webview中的setUserAgentString对loadURL()中使用的HTTP头没有影响

Question

一直在尝试更改Android应用的HTTP请求中的User-Agent字符串.我已经与wireshark和模拟器一起测试了这个,并且已经看到虽然我在webview中设置了useragent字符串,但是关联的loadUrl请求不使用此用户代理字符串.相反,我在wireshark捕获中看到Dalvik useragent字符串.这是代码摘要.有任何想法吗？或者模拟器不支持这个？

@Override
public void run() {
    assert(context != null);

    ...
    ...
    webView = new WebView(context);
    ...
    String defaultUserAgent = "betaUAteststring";


    // Clear per-application caches etc
    webView.clearCache(true);
    webView.clearHistory();
    webView.getSettings().setAppCacheEnabled(false);
    webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
    webView.getSettings().setJavaScriptEnabled(true);


    webView.setWebViewClient(new WebViewClient() {
        @Override  
        public void onPageFinished(WebView view, String url) {
        ....
        }

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
        ..
        }

        @Override
        public void onLoadResource(WebView view, String url) {
        ...
        }
    });


    // Start loading


    webView.getSettings().setUserAgentString(defaultUserAgent);
    String setUA = webView.getSettings().getUserAgentString();
    //--> logging here shows the correct user agent, so the webview does accept the value
    // However the following statement does not result in an http request with the webviews user agent
    webView.loadUrl(url);

    //Alternative doesn't help either (and shouldn't according to javadoc)

    //Map<String,String> headerMap = new HashMap<String,String>();
    //headerMap.put("User-Agent","uaTestInAMap");        
    //webView.loadUrl(url, headerMap);
}

Answer 1

回答我自己的问题。看来模拟器出于某种原因没有从 web 视图中获取用户代理字符串。不过我还没有找到原因。该代码在真实设备上运行良好。