工作日的NSDateComponents没有显示正确的工作日？ [英] NSDateComponents weekday doesn't show correct weekday?

问题描述

我得到了一个N​​SDate例如1/6 -12（星期五）并试图找出它的工作日。我的周从星期一开始，所以星期五应该是工作日5。

I got a NSDate for example 1/6 -12 (Friday) and trying to find out what weekday it is. My week starts at Monday so Friday should be weekday 5.

    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    [calendar setFirstWeekday:2];
    NSDateComponents *components = [calendar components:NSWeekdayCalendarUnit fromDate:firstOfJulyDate];
    NSLog(@"weekday %i",components.weekday);

输出：工作日6

不会无论我设置setFirstWeekday，输出将始终为6.
我做错了什么？

Doesn't matter what i set setFirstWeekday to, output will always be 6. What am i doing wrong?

推荐答案

尝试做这样的事情：

NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
[gregorian setFirstWeekday:2]; // Sunday == 1, Saturday == 7
NSUInteger adjustedWeekdayOrdinal = [gregorian ordinalityOfUnit:NSWeekdayCalendarUnit inUnit:NSWeekCalendarUnit forDate:[NSDate date]];
NSLog(@"Adjusted weekday ordinal: %d", adjustedWeekdayOrdinal);

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