从日，月和年生成NSDate [英] Generate NSDate from day, month, and year

问题描述

现在我的尝试是这样的：

我试图从一个月和一年生成一个NSDate

  NSCalendar * calendar = [NSCalendar currentCalendar]; 
 NSDateComponents * components = [[NSDateComponents alloc] init]; 
 NSNumber * day = [dataSource valueForKey：@day]; 
 NSNumber * month = [dataSource valueForKey：@month]; 
 NSNumber * year = [dataSource valueForKey：@year]; 
 [components setDay：[day intValue]]; 
 [components setMonth：[month intValue]]; 
 [components setMonth：[year intValue]]; 
 NSDate * _date = [calendar dateFromComponents：components];但是，当day = 24，month = 8时， _date 会输出以下信息：
 



< ，year = 2011：

0168-07-25 04:56:02 +0000

我必须做一些可怕的错误，但我不知道什么。

解决方案

您的代码中有错字：（最后一行应该是 setYear：）

  [components setDay：[day intValue] 
 [components setMonth：[month intValue]]; 
 [components setYear：[year intValue]]; 
  

I'm trying to generate a NSDate from a month day and year (all in integer format).

Right now my attempt is such:

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [[NSDateComponents alloc] init];
NSNumber *day = [dataSource valueForKey:@"day"];
NSNumber *month = [dataSource valueForKey:@"month"];
NSNumber *year = [dataSource valueForKey:@"year"];
[components setDay:[day intValue]];
[components setMonth:[month intValue]];
[components setMonth:[year intValue]];
NSDate *_date = [calendar dateFromComponents:components];

However, _date outputs the following when day = 24, month = 8, year = 2011:

0168-07-25 04:56:02 +0000

I must be doing something horribly wrong, but I have no idea what. Anyone know what might be going on?

解决方案

You have a typo in your code: (last line should be setYear:)

 [components setDay:[day intValue]];
 [components setMonth:[month intValue]];
 [components setYear:[year intValue]];

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