Android get mime type of file or url

Use following function to get MIME Type of file. pass file path or any url

public static String getMimeType(String url) {
  try {
   String type = null;
   String extension = url.substring(url.lastIndexOf(".") + 1, url.length());
   Log.i("extension", "ext : " + extension);
   if (extension != null) {
    type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
   }
   return type;
  } catch (Exception e) {
   e.printStackTrace();
  }
  return null;
}