目标C-如何获得NSDate的工作日? [英] Objective C - How can i get the weekday from NSDate?

问题描述

我需要能够从nsdate获得工作日，我有以下代码，并且它总是返回1.我试图更改月份，我尝试将所有内容从1改为12，但工作日的结果始终为1

I need to be able to get the weekday from nsdate, i have the following code and it always return 1. I tried to change the month, i tried everything from 1 to 12 but the result of the week day is always 1.

NSDate *date2 = [[NSDate alloc] initWithString:[NSString stringWithFormat:@"%d-%d-%d", 2010, 6, 1]];
unsigned units2 = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit | NSWeekdayCalendarUnit;
NSCalendar *calendar2 = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components2 = [calendar2 components:units2 fromDate:date2];
int startWeekDay = [components2 weekday];
[date2 release];
[calendar2 release];

推荐答案

为Mac

根据文档，字符串格式必须为 —YYYY-MM-DD HH:MM:SS±HHMM ，所有字段均为必填

The format of the string has to be —YYYY-MM-DD HH:MM:SS ±HHMM according to the docs, all fields mandatory

旧答案(适用于iPhone，并在模拟器上进行了测试):

NSDate中没有(公共)-initWithString:方法，返回的结果是 not 您期望的结果.

There is no (public) -initWithString: method in NSDate, and what you get returned is not what you expect.

使用正确配置的(需要提供输入格式)NSDateFormatter和-dateFromString:.

Use a properly configured (you need to give the input format) NSDateFormatter and -dateFromString:.

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