Ios 显示当前周天数和日期

我有点问题。我希望显示当前一周中所有带日期的日期（因为我写的是第38周（公历））。我所拥有的是好的，但是它没有显示正确的日期。例如： 本周周一是9月15日，周日是9月21日。 当我将一周的第一天设置为9月14日的星期日时

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);

它应该显示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）

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提前谢谢

如果您查看文档，它会执行它应该执行的操作：

:

当您调用

setWeekDay

-1表示周日，因此如果您需要从周一开始，您的第一个调用应该是

setWeekDay:2

更新：

至于在第一天之后的所有连续几天，我建议实现类似的功能（在代码中插入此函数）：

并使用此函数从一周开始的当天起添加1-6。基本上替换所有第二天和其他天代码：

[currentComps setWeekday:2];
NSDate *secondDayOfTheWeek = [myCalendar dateFromComponents:currentComps];

以下是：

NSDate *secondDayOfTheWeek = [self dateByAddingDays:1 toDate:firstDayOfTheWeek];
NSDate *thirdOfTheWeek = [self dateByAddingDays:2 toDate:firstDayOfTheWeek];
... 

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是的，我试过了。但是我怎样才能得到9月21日的星期日呢？因为一周不是从星期天开始的。我不知道我应该如何在我的代码中实现它。@Dridia：我添加了你需要复制粘贴到代码中的确切代码。我不知道你是如何做到的@sha！但我工作起来很有魅力！非常感谢你！！今天（星期日）此代码将在接下来的几周内执行。所以，今天仍然是第38周，但它显示了第39周的所有日期。为什么会这样？

NSDate *secondDayOfTheWeek = [self dateByAddingDays:1 toDate:firstDayOfTheWeek];
NSDate *thirdOfTheWeek = [self dateByAddingDays:2 toDate:firstDayOfTheWeek];
...