是否可以从WebView获取HTML代码

我想抢先获取要加载的网页的HTML代码,webView使用正则表达式解析它,并只显示我想要的HTML代码,同时让网页仍然认为它已经加载了所有内容.

有没有办法在WebViewClient.onLoadResource()相似的方法中做到这一点？

编辑:我试过这个:

class MyJavaScriptInterface  
 {  
      @SuppressWarnings("unused")  
         public void showHTML(String html, Context context)  
         {  
            new AlertDialog.Builder(context)  
                 .setTitle("HTML")  
                 .setMessage(html)  
                 .setPositiveButton(android.R.string.ok, null)  
             .setCancelable(false)  
             .create();  
               pageHTML = html;
         }  
 }

@Override
    public void customizeWebView(final ServiceCommunicableActivity activity, final WebView webview, final SearchResult mRom) {
        mRom.setFileSize(getFileSize(mRom.getURLSuffix()));
        webview.getSettings().setJavaScriptEnabled(true);
        MyJavaScriptInterface interfaceA = new MyJavaScriptInterface();
        webview.addJavascriptInterface(interfaceA, "HTMLOUT");  
        WebViewClient anchorWebViewClient = new WebViewClient()
        {
            @Override  
            public void onPageFinished(WebView view, String url)  
            {  
                /* This call inject JavaScript into the page which just finished loading. */  
                webview.loadUrl("javascript:window.HTMLOUT.showHTML(''+document.getElementsByTagName('html')[0].innerHTML+'');");
                Pattern pattern = Pattern.compile("
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