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Is it possible to get HTML code from WebView

I would prefer to get the HTML code of the webpage that needs to be loaded into the webView , webView it with a regular expression and display only the HTML code that I want, and let the webpage still think that it is loaded all.

Is there a way to do this in WebViewClient.onLoadResource() or similar methods?

EDIT: I tried this:

 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('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');"); Pattern pattern = Pattern.compile("<h2>Winning Sc.+</h2></div>(.+)<br>", Pattern.DOTALL); Matcher matcher = pattern.matcher(pageHTML); matcher.find();

The interface is never called

+23
android html webview
Aug 13 2018-10-18
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4 answers

Had to use HttpClient. no cookie required, just parsing for html:

 private String getDownloadButtonOnly(String url){ HttpGet pageGet = new HttpGet(url); ResponseHandler<String> handler = new ResponseHandler<String>() { public String handleResponse(HttpResponse response) throws ClientProtocolException, IOException { HttpEntity entity = response.getEntity(); String html; if (entity != null) { html = EntityUtils.toString(entity); return html; } else { return null; } } }; pageHTML = null; try { while (pageHTML==null){ pageHTML = client.execute(pageGet, handler); } } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } Pattern pattern = Pattern.compile("<h2>Direct Down.+?</h2>(</div>)*(.+?)<.+?>", Pattern.DOTALL); Matcher matcher = pattern.matcher(pageHTML); String displayHTML = null; while(matcher.find()){ displayHTML = matcher.group(); } return displayHTML; } @Override public void customizeWebView(final ServiceCommunicableActivity activity, final WebView webview, final SearchResult mRom) { mRom.setFileSize(getFileSize(mRom.getURLSuffix())); webview.getSettings().setJavaScriptEnabled(true); WebViewClient anchorWebViewClient = new WebViewClient() { @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { super.onPageStarted(view, url, favicon); String downloadButtonHTML = getDownloadButtonOnly(url); if(downloadButtonHTML!=null && !url.equals(lastLoadedURL)){ lastLoadedURL = url; webview.loadDataWithBaseURL(url, downloadButtonHTML, null, "utf-8", url); } }
+9
Aug 14 '10 at 4:44
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Here is the tutorial Extract HTML from WebView , be sure to read the warning at the end of the tutorial.

+6
Aug 13 '10 at 18:58
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Try adding @JavascriptInterface before public void showHTML (String html, context context)

0
May 23 '13 at 16:41
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If you have the opportunity to influence the server side on which you receive the page, you can ask to redirect to a specific page in case of an error. In your WebViewClient, you can detect this redirection and use it as an error signal.

0
Sep 04 '14 at 10:29
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