Android之判斷時間是否為今天

字符串：      sdate =  2013-07-16 13:35:02

/**
     * 判斷給定字符串時間是否為今日
     * @param sdate
     * @return boolean
     */
    public static boolean isToday(String sdate){
        boolean b = false;
        Date time = toDate(sdate);
        Date today = new Date();
        if(time != null){
            String nowDate = dateFormater2.get().format(today);
            String timeDate = dateFormater2.get().format(time);
            if(nowDate.equals(timeDate)){
                b = true;
            }
        }
        return b;
    }

/**
     * 將字符串轉位日期類型
     * @param sdate
     * @return
     */
    public static Date toDate(String sdate) {
        try {
            return dateFormater.get().parse(sdate);
        } catch (ParseException e) {
            return null;
        }
    }

private final static ThreadLocal<SimpleDateFormat> dateFormater = new ThreadLocal<SimpleDateFormat>() {
        @Override
        protected SimpleDateFormat initialValue() {
            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        }
    };

private final static ThreadLocal<SimpleDateFormat> dateFormater2 = new ThreadLocal<SimpleDateFormat>() {
        @Override
        protected SimpleDateFormat initialValue() {
            return new SimpleDateFormat("yyyy-MM-dd");
        }
    };