iOS開發 根據日期計算是星期幾
阿新 • • 發佈：2019-01-23
NSDateComponents *_comps = [[NSDateComponents alloc] init];
[_comps setDay:23];
[_comps setMonth:3];
[_comps setYear:2014];
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *_date = [gregorian dateFromComponents:_comps];
NSDateComponents *weekdayComponents =
[gregorian components:NSWeekdayCalendarUnit fromDate:_date];
int _weekday = [weekdayComponents weekday];
NSLog(@"_weekday::%d",_weekday);
[_comps setDay:23];
[_comps setMonth:3];
[_comps setYear:2014];
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *_date = [gregorian dateFromComponents:_comps];
NSDateComponents *weekdayComponents =
[gregorian components:NSWeekdayCalendarUnit fromDate:_date];
int _weekday = [weekdayComponents weekday];
NSLog(@"_weekday::%d",_weekday);