我有一个问题。我希望我显示当前星期中所有带日期的日期（因为我正在写第38周（格里高里安））。我所拥有的是好的，但是，它没有显示正确的日期。例如：
这个星期的星期一是9月15日，星期日是9月21日。
当我将一周的第一天设置为9月14日（星期日）时。
NSDate *currentDate = [NSDate date];
NSCalendar *myCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *currentComps = [myCalendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSWeekOfYearCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit) fromDate:currentDate];
int thisWeeksNumber = currentComps.weekOfYear;
NSLog(@"1 %d", thisWeeksNumber); //This displays the correct week.
[currentComps setWeekday:1];
NSDate *firstDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
[currentComps setWeekday:2];
NSDate *secondDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
[currentComps setWeekday:3];
NSDate *thirdDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
[currentComps setWeekday:4];
NSDate *fourthDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
[currentComps setWeekday:5];
NSDate *fifthDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
[currentComps setWeekday:6];
NSDate *sixthDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
[currentComps setWeekday:7];
NSDate *seventhDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
NSDateFormatter *myDateFormatter = [[NSDateFormatter alloc] init];
myDateFormatter.dateFormat = @"yyyy-MM-dd";
NSString *firstStr = [myDateFormatter stringFromDate:firstDayOfTheWeek];
NSString *secondStr = [myDateFormatter stringFromDate:secondDayOfTheWeek];
NSString *thirdStr = [myDateFormatter stringFromDate:thirdDayOfTheWeek];
NSString *fourthStr = [myDateFormatter stringFromDate:fourthDayOfTheWeek];
NSString *fifthStr = [myDateFormatter stringFromDate:fifthDayOfTheWeek];
NSString *sixthStr = [myDateFormatter stringFromDate:sixthDayOfTheWeek];
NSString *seventhStr = [myDateFormatter stringFromDate:seventhDayOfTheWeek];
NSLog(@"\n %@ \n %@ \n %@ \n %@ \n %@ \n %@ \n %@", firstStr, secondStr, thirdStr, fourthStr, fifthStr, sixthStr, seventhStr);
它应显示9月15日至9月21日，但显示9月14日（星期日）至9月21日（星期六）。
提前致谢！
最佳答案
如果您查看文档，则说明它确实可以执行以下操作：
https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSDateComponents_Class/Reference/Reference.html#//apple_ref/occ/instm/NSDateComponents/setWeekday：
致电setWeekDay时-1表示星期日，因此如果您需要从星期一开始，则第一个电话应为setWeekDay:2
更新：
至于第一天之后连续几天都行，我建议实现类似的东西（将此函数插入您的代码中）：
- (NSDate*)dateByAddingDays:(NSInteger)days toDate:(NSDate *)date
{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *comps = [[NSDateComponents alloc] init];
comps.day = days;
return [calendar dateByAddingComponents: comps toDate: date options: 0];
}
并使用此功能从一周开始的那一天开始加1-6。基本上替换所有第二天和其他日子的代码：
[currentComps setWeekday:2];
NSDate *secondDayOfTheWeek = [myCalendar dateFromComponents:currentComps];
具有以下内容：
NSDate *secondDayOfTheWeek = [self dateByAddingDays:1 toDate:firstDayOfTheWeek];
NSDate *thirdOfTheWeek = [self dateByAddingDays:2 toDate:firstDayOfTheWeek];
...
关于ios - 显示当前工作日和日期，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25950343/