知道一年中的年,周中的几号和周中的某天,就可以获得一年中的月份和月中的一天。例如
// corresponding to September 15, 2012 if week starts on Monday
int weekNum = 38;
int dayNum = 6;
int year = 2012;
// set the calendar instance the a week of year and day in the future
Calendar aGMTCalendar = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
aGMTCalendar.setFirstDayOfWeek(Calendar.MONDAY);
aGMTCalendar.set(Calendar.WEEK_OF_YEAR,weekNum );
aGMTCalendar.set(Calendar.DAY_OF_WEEK,dayNum );
aGMTCalendar.set(Calendar.YEAR,year);
// get the month and day of month
int monthGMT = aGMTCalendar.get(Calendar.MONTH + 1); // returns 38 not 9
int dayOfMonthNumGMT = aGMTCalendar.get(Calendar.DAY_OF_MONTH);
// returns 14 but I wanted 15
谢谢
最佳答案
这应该是
// +1 to the value of month returned, not to the value of MONTH constant.
int monthGMT = aGMTCalendar.get(Calendar.MONTH) + 1;