Calendar

1.Calendar获取当前的时间

Calendar calendar1 = Calendar.getInstance();endDateTimelong = calendar1.getTimeInMillis();

2.修改calendar的时间，设置其为指定时间

1） calendar.set(Calendar.YEAR, 2016);    calendar.set(Calendar.MONTH, 0);    calendar.set(Calendar.DAY_OF_MONTH, 1);    calendar.set(Calendar.HOUR_OF_DAY, 0);    calendar.set(Calendar.MINUTE, 0);    calendar.set(Calendar.SECOND, 0);2） calendar.set(2016, 0, 1, 0, 0, 0);

3.DatePicker修改时间

DatePicker dp;dp.updateDate(yyyystart, mmstart - 1, ddstart);public void updateDate(int year, int month, int dayOfMonth) {    mDelegate.updateDate(year, month, dayOfMonth);}