Android Today Get getNbDaysToDate(Calendar from, int toYear, int toMonth, int toDay)

Description

get Nb Days To Date

License

Open Source License

Declaration

public static int getNbDaysToDate(Calendar from, int toYear,
            int toMonth, int toDay) 

Method Source Code

//package com.java2s;
/*/*from   w  w  w .j  av a2s . c o  m*/
 * This source is part of the
 *      _____  ___   ____
 *  __ / / _ \/ _ | / __/___  _______ _
 * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/
 * \___/_/|_/_/ |_/_/ (_)___/_/  \_, /
 *                              /___/
 * repository.
 * 
 * Copyright (C) 2014 Benoit 'BoD' Lubek (BoD@JRAF.org)
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.Calendar;

import android.text.format.Time;

public class Main {
    public static int getNbDaysToDate(Calendar from, int toYear,
            int toMonth, int toDay) {
        stripTime(from);
        int todayJulianDay = getJulianDay(from);

        Calendar eventCal = Calendar.getInstance();
        eventCal.set(Calendar.YEAR, toYear);
        eventCal.set(Calendar.MONTH, toMonth);
        eventCal.set(Calendar.DAY_OF_MONTH, toDay);
        stripTime(eventCal);
        int eventJulianDay = getJulianDay(eventCal);

        return eventJulianDay - todayJulianDay;
    }

    public static void stripTime(Calendar cal) {
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
    }

    private static int getJulianDay(Calendar cal) {
        Time time = new Time();
        time.set(cal.getTimeInMillis());
        return Time.getJulianDay(cal.getTimeInMillis(), time.gmtoff);
    }
}

Related

1. getToday()
2. getLastyearToday(String str)
3. getTodayFull()
4. isToday(Calendar today, Calendar date)
5. isToday(Calendar date)
6. isToday(long time)
7. today()
8. today()
9. isToday(long lTime)