public Bitmap getBitmap(final WebView w, int containerWidth, int containerHeight, final String baseURL, final String content) {
    final CountDownLatch signal = new CountDownLatch(1);
    final Bitmap b = Bitmap.createBitmap(containerWidth, containerHeight, Bitmap.Config.ARGB_8888);
    final AtomicBoolean ready = new AtomicBoolean(false); 
    w.post(new Runnable() {

        @Override
        public void run() {
            w.setWebViewClient(new WebViewClient() {
                @Override
                public void onPageFinished(WebView view, String url) {
                    ready.set(true);
                }
            });
            w.setPictureListener(new PictureListener() {
                @Override
                public void onNewPicture(WebView view, Picture picture) {
                    if (ready.get()) {
                        final Canvas c = new Canvas(b);
                        view.draw(c);
                        w.setPictureListener(null);
                        signal.countDown();
                    }
                }
            });
            w.layout(0, 0, rect.width(), rect.height());
            w.loadDataWithBaseURL(baseURL, content, "text/html", "UTF-8", null);
        }});
    try {
        signal.await();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    return b;
}