日历
某一天
- (NSInteger)day:(NSDate *)date{
NSDateComponents *components = [[NSCalendar currentCalendar] components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:date];
return [components day];
}某一月
- (NSInteger)month:(NSDate *)date{
NSDateComponents *components = [[NSCalendar currentCalendar] components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:date];
return [components month];
}某一年
- (NSInteger)year:(NSDate *)date{
NSDateComponents *components = [[NSCalendar currentCalendar] components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:date];
return [components year];
}-
某月第一天是周几
- (NSInteger)firstWeekdayInThisMonth:(NSDate *)date{
NSCalendar *calendar = [NSCalendar currentCalendar];[calendar setFirstWeekday:1];//1.Sun. 2.Mon. 3.Thes. 4.Wed. 5.Thur. 6.Fri. 7.Sat. NSDateComponents *comp = [calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:date]; [comp setDay:1]; NSDate *firstDayOfMonthDate = [calendar dateFromComponents:comp]; NSUInteger firstWeekday = [calendar ordinalityOfUnit:NSCalendarUnitWeekday inUnit:NSCalendarUnitWeekOfMonth forDate:firstDayOfMonthDate]; return firstWeekday - 1; } 某个月有多少天
- (NSInteger)totaldaysInMonth:(NSDate *)date {
NSRange daysInLastMonth = [[NSCalendar currentCalendar] rangeOfUnit:NSCalendarUnitDay inUnit:NSCalendarUnitMonth forDate:date];
return daysInLastMonth.length;
}
[Demo地址]（https://github.com/haidumou/Calendar.git）
