public static Date stringToDate(String dateString) {    ParsePosition position = new ParsePosition(0);    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");    Date dateValue = simpleDateFormat.parse(dateString, position);    return dateValue;  }

private void sortData(ArrayList<CourseModel> mList) {    Collections.sort(mList, new Comparator<CourseModel>() {      /**       *       * @param lhs       * @param rhs       * @return an integer < 0 if lhs is less than rhs, 0 if they are       *     equal, and > 0 if lhs is greater than rhs,比較數據大小時,這里比的是時間       */      @Override      public int compare(CourseModel lhs, CourseModel rhs) {        Date date1 = DateUtil.stringToDate(lhs.getCREATE_TIME());        Date date2 = DateUtil.stringToDate(rhs.getCREATE_TIME());        // 對日期字段進行升序，如果欲降序可采用after方法        if (date1.before(date2)) {          return 1;        }        return -1;      }    });    adapter.replaceAll(mList);  }