NSString 到 NSDate 的转换失败 [英] Conversion of NSString to NSDate failing

问题描述

我有以下一段代码..

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"MM/dd/YYYY HH:mm"];
NSString *dateString = @"10/27/2012 18:00";
NSDate *parsedDate = [dateFormatter dateFromString:dateString] ;
NSLog(@"Parsed Date.. %@",[parsedDate description]);

我将 NSLog 语句设为 Parsed Date.. 2011-12-25 00:00:00 +0000.我将不胜感激任何帮助解决此问题.我只想将该 NSString 转换为其 NSDate 等效项.也尝试使用 NSTimeZone ，但没​​有效果.我在这里错过了什么?

I am getting the NSLog statement as Parsed Date.. 2011-12-25 00:00:00 +0000. I would appreciate any help in resolving this. I just want to convert that NSString to its NSDate equivalent. Tried using NSTimeZone as well, but no effect. What am I missing here?

推荐答案

您需要使用小写年份指示，yyyy 而不是 YYYY>:

You need to use lower case year indication, yyyy instead of YYYY:

[dateFormatter setDateFormat:@"MM/dd/yyyy HH:mm"];

如果您想获得正确的时区，您需要设置 NSDateFormatter 的时区.默认情况下，它使用您设备的时区.对于格林威治标准时间，请使用以下内容.

If you want to get the timezone right you need to set the timezone of the NSDateFormatter. By default it uses the timezone of your device. For the time at GMT use the following.

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
[dateFormatter setDateFormat:@"MM/dd/yyyy HH:mm"];
NSString *dateString = @"10/27/2012 18:00";
NSDate *parsedDate = [dateFormatter dateFromString:dateString] ;
NSLog(@"Parsed Date.. %@",[parsedDate description]);

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