on Android

Android WebView Content

Sometimes you want to look at the html that’s currently beeing shown in a webview. Using a JavascriptInterface this is easy and works on every Android version.

When using API 17+ you’ll need the @JavascriptInterface annotation.

webView.addJavascriptInterface(new JSInterface(), "HtmlViewer");
webView.loadUrl("javascript:window.HtmlViewer.printHtml" + "('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");

-

class JSInterface {
    @JavascriptInterface
    public void printHtml(String html) {
        Log.v("LOG", html);
    }
}