code: public void delayEnableViews() {
          Message msg = Message.obtain(mHandler, MSG_ENABLE_VIEWS, 1, 0);
          if (msg != null)
              msg.sendToTarget();
  
          msg = Message.obtain(mHandler, MSG_ENABLE_VIEWS, 0, 0);
          if (msg != null)
              mHandler.sendMessageDelayed(msg, DEFAULT_DELAY_TIME);
      }
docs: when some views can't be clicked at same time or too fast, use this
  method. should override {@link #setViewsEnability(boolean)}