iOS 5.1 和 iOS 6 中 NSDateFormatter 的行为 [英] Behavior of NSDateFormatter in iOS 5.1 and iOS 6

问题描述

还有人注意到 iOS 5.1 和 iOS 6.0 之间的一些差异吗?在下面，日期字符串的格式在每个版本中都不同:NSDateFormatter

Anyone else noticing some differences between iOS 5.1 and iOS 6.0? In the following, the format of the date string comes back differently in each version:NSDateFormatter

*dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
dateFormatter.dateFormat = @"MM/dd/yyyy HH:mm:ss (vvvvv)";
NSDate   *lDate   = [[NSDate alloc]init];
NSString *sDate   = [dateFormatter stringFromDate:lDate];

在 iOS 5.1 中，sDate 是10/01/2012 16:43:09 (GMT-05:00)"但在 iOS 6.0 中，sDate 是10/01/2012 16:44:09 ()"

In iOS 5.1, sDate is "10/01/2012 16:43:09 (GMT-05:00)" but in iOS 6.0, sDate is "10/01/2012 16:44:09 ()"

关于为什么会这样的任何想法?

Any ideas on why this would be?

推荐答案

将 @"MM/dd/yyyy HH:mm:ss (vvvvv)"; 替换为 @"MM/dd/yyyy HH:mm:ss ('GMT'Z)";

Z 格式字符串将输出您对 vvvvv 所做的操作，除了 GMT 前缀并且没有冒号.

The Z format string will output what you were doing with vvvvv except for the GMT prefix and there is no colon as well.

如果需要冒号，可以添加这一行将其添加到字符串中:

If the colon is needed, you can add this line to add it to the string:

sDate = [NSString stringWithFormat:@"%@:%@", [sDate substringToIndex:sDate.length-3], [sDate substringWithRange:NSMakeRange(sDate.length-3, 3)]];

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