protected Void doInBackground(Void... voids) {

      try {
        SimpleNotification.createTopic(topicName.getText().toString());

      } catch (Throwable e) {
        setStackAndPost(e);
      }

      return null;
    }
 protected void obtainListItems() {
   topicNameList = SimpleNotification.getTopicNames();
   getHandler().post(postResults);
 }