Example usage for java.util Calendar add

Introduction

In this page you can find the example usage for java.util Calendar add.

Prototype

public abstract void add(int field, int amount);

Source Link

Document

Adds or subtracts the specified amount of time to the given calendar field, based on the calendar's rules.

Usage

From source file:Main.java

/**
 * Check the schedule has expired or not
 * //w ww.  j a  v  a 2s  . c o m
 * @param endDate
 * @return
 */
public static boolean hasNotExpired(Date endDate) {
    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.DAY_OF_MONTH, -1);

    // Check expired date
    return (endDate == null || cal.getTime().before(endDate));
}

From source file:Main.java

public static Date addField(Date date, int field, int amount) {
    Calendar result = getCurrentCalendar(date);
    result.add(field, amount);
    return result.getTime();
}

From source file:Main.java

public static Calendar getNotificationCalendarNextDate(int hour, int minute) {
    Calendar currentCalendar = Calendar.getInstance();
    currentCalendar.add(Calendar.DATE, 1);
    currentCalendar.set(Calendar.HOUR_OF_DAY, hour);
    currentCalendar.set(Calendar.MINUTE, minute);
    return currentCalendar;

}

From source file:Main.java

public static void setTimerReceiver(Context context, int repeat_time, Class<?> class_name) {
    AlarmManager alarm = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    Intent intentReceiver = new Intent(context, class_name);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intentReceiver,
            PendingIntent.FLAG_CANCEL_CURRENT);
    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.SECOND, repeat_time / 1000);

    // InexactRepeating allows Android to optimize the energy consumption
    alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), repeat_time, pendingIntent);
}

From source file:Main.java

public static String getCurrMonthAfter(int monthDiff, String format) {
    SimpleDateFormat ft = new SimpleDateFormat(format);
    Calendar c = new GregorianCalendar();
    c.add(Calendar.MONTH, monthDiff);
    return ft.format(c.getTime());
}

From source file:Main.java

public static String previousDateString(String dateString) throws ParseException {
    DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");

    Date myDate = dateFormat.parse(dateString);

    Calendar calendar = Calendar.getInstance();
    calendar.setTime(myDate);/* ww w.j ava  2s  .  c om*/
    calendar.add(Calendar.DAY_OF_YEAR, -1);

    Date previousDate = calendar.getTime();
    String result = dateFormat.format(previousDate);

    return result;
}

From source file:Main.java

public static String getCurrentDateByOffset(String format, int calendarField, int offset) {
    String mDateTime = null;/*from w w  w .  j a  va  2s . c  om*/
    try {
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format, Locale.CHINA);
        Calendar c = Calendar.getInstance();
        c.add(calendarField, offset);
        mDateTime = mSimpleDateFormat.format(c.getTime());
    } catch (Exception e) {
        e.printStackTrace();
    }
    return mDateTime;
}

From source file:Main.java

public static String getYestoryDate() {
    Calendar calendar = Calendar.getInstance();
    calendar.add(Calendar.DATE, -1);
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    String yestoday = sdf.format(calendar.getTime());
    return yestoday;
}

From source file:Main.java

public static String getBeforeTodayWithFormat(int gap, String dateFormat) {
    Calendar currentCalendar = Calendar.getInstance();
    currentCalendar.add(Calendar.DATE, gap);

    Date date = currentCalendar.getTime();
    SimpleDateFormat format = new SimpleDateFormat(dateFormat);
    return format.format(date);
}

From source file:Main.java

/**
 * Given a calendar date, find a logical end time for an event.  Most likely one hour later.
 * @param fromCalendar//from   www .j a v a2  s. c o m
 * @return endCalendar
 */
public static Calendar getLogicalEnd(Calendar fromCalendar) {
    Calendar endCalendar = (Calendar) fromCalendar.clone();
    endCalendar.add(Calendar.HOUR_OF_DAY, 1);
    return endCalendar;
}