private URL verifyUrl(String url) {
// Only allow HTTP URLs.
        if (!url.toLowerCase().startsWith("http://")) {
            return null;
// Verify format of URL.



        }
        URL verifiedUrl = null;
        try {
            verifiedUrl = new URL(url);
        } catch (Exception e) {






            return null;
        }

        return verifiedUrl;
    }