日期相減取得秒數

方法說明：

isHoliday() 方法判斷傳入日期是否為六日

getDuration() 方法回傳相減過後的秒數，包含六日

getTimeFrame() 方法回傳相減過後的秒數，不包含六日

/**

 * Check holiday

 *

 * @param startTime

 * @param endTime

 * @return true or false

 */

public static boolean isHoliday(Calendar calander) {

    boolean isHoliday = false;

    if (calander.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY

            && calander.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {

        isHoliday = false;

    } else {

        isHoliday = true;

    }

    return isHoliday;

}

/**

 * Get the total seconds between the startTime & endTime

 *

 * @param startTime

 * @param endTime

 * @return

 */

public static long getDuration(Date startTime, Date endTime) {

    long totalSeconds = 0;

    Calendar startCal = Calendar.getInstance();

    startCal.setTime(startTime);

    Calendar endCal = Calendar.getInstance();

    endCal.setTime(endTime);

    totalSeconds = (endCal.getTimeInMillis() - startCal.getTimeInMillis()) / 1000;

    return totalSeconds;

}

/**

 * Get the total seconds between the startTime & endTime (Without Sunday &

 * Saturday)

 *

 * @param startTime

 * @param endTime

 * @return

 */

public static long getTimeFrame(Date startTime, Date endTime) {

    long timeFrame = 0;

    Calendar startCal = Calendar.getInstance();

    startCal.setTime(startTime);

    //startCal.add(Calendar.DATE, -6);

    Calendar endCal = Calendar.getInstance();

    endCal.setTime(endTime);

    //endCal.add(Calendar.DATE, 1);

    int useDays = 0;

    long totalSeconds = 0;

    Calendar tmpDate = Calendar.getInstance();

    tmpDate.setTimeInMillis(startCal.getTimeInMillis());

    if (DateUtils.isSameDate(startCal, endCal) && startCal.before(endCal)) {

        useDays = 0;

        totalSeconds = (endCal.getTimeInMillis() - startCal.getTimeInMillis()) / 1000;

        return totalSeconds;

    } else if (!DateUtils.isSameDate(startCal, endCal) && startCal.before(endCal)) {

        long secondsPastOfEndTime = endCal.get(Calendar.SECOND) + endCal.get(Calendar.MINUTE) * 60

                + endCal.get(Calendar.HOUR_OF_DAY) * 60 * 60;

        long secondsRemainOfStartTime = 0;

        while (tmpDate.before(endCal)) {

            tmpDate.add(Calendar.DATE, 1);

            if (DateUtils.isSameDate(tmpDate, endCal)) {

                break;

            } else {

                if (!MxDateUtility.isHoliday(startCal) && MxDateUtility.isHoliday(endCal)) {

                    useDays++;

                } else {

                    if (tmpDate.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY

                            && tmpDate.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {

                        useDays++;

                    }

                }

            }

        }

        if (MxDateUtility.isHoliday(startCal) && !MxDateUtility.isHoliday(endCal)) {

            secondsRemainOfStartTime = 0;

        } else {

            secondsRemainOfStartTime = 86400 - (startCal.get(Calendar.SECOND) + startCal.get(Calendar.MINUTE) * 60 + startCal

                    .get(Calendar.HOUR_OF_DAY) * 60 * 60);

        }

        long secondsOfUseDays = useDays * 86400;

        totalSeconds = secondsRemainOfStartTime + secondsOfUseDays + secondsPastOfEndTime;

        return totalSeconds;

    } else {

        return 0;

    }

}