@Override
  protected void onResume() {
    super.onResume();
    adapter.clear();

    Cursor message = dbHelper.getMessage(new String[] {"date", "name", "content"});
    message.moveToPosition(message.getCount());
    while (message.moveToPrevious()) {
      DateInfo dateInfo = new DateInfo(message.getLong(message.getColumnIndex("date")));
      adapter.add(
          dateInfo.getRTime()
              + "\n"
              + message.getString(message.getColumnIndex("name"))
              + "\n"
              + message.getString(message.getColumnIndex("content")));
    }
    message.close();
    dbHelper.close();
  }