简单的日期格式化问题yyyymmdd

问题描述

想知道将yyyymmdd这样的字符串转换成格式为mm-dd-yyyy的字符串的最佳方式。试过NSDateFormatter没有运气。任何帮助都不胜感激！

我的解决方案如下：

  NSString * dateString = @22082011; 
 NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init]; 
 [dateFormatter setDateFormat：@yyyyMMdd]; 
 NSDate * date = [dateFormatter dateFromString： dateString]; 
 
 [dateFormatter setDateFormat：@MMM d，YYYY]; 
 dateString = [dateFormatter stringFromDate：date]; 
 [dateFormatter release]; 
  

解决方案

您首先需要解析：

  NSDateFormatter * dateFormat = [[NSDateFormatter alloc] init]; 
 [dateFormat setDateFormat：@yyyyMMdd]; 
 NSDate * date = [dateFormat dateFromString：dateStr]; 
  

然后你可以使用这个：

  [dateFormat setDateFormat：@yyyy-MM-dd]; 
 NSString * myFormattedDate = [dateFormat stringFromDate：date]; 
  

Wondering about the best way to turn a string like "yyyymmdd" into a string with the format "mm-dd-yyyy". Tried NSDateFormatter with no luck. Any help is appreciated!

My solution is as follows:

NSString *dateString = @"22082011;
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyyMMdd"];
NSDate *date = [dateFormatter dateFromString:dateString];

[dateFormatter setDateFormat:@"MMM d, YYYY"];
dateString = [dateFormatter stringFromDate:date];
[dateFormatter release];

解决方案

You will first need to parse it:

NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"yyyyMMdd"];
NSDate *date = [dateFormat dateFromString:dateStr];

and then you can use this:

[dateFormat setDateFormat:@"yyyy-MM-dd"];
NSString *myFormattedDate = [dateFormat stringFromDate:date];

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