Ios6 iOS 6 dateFromString返回错误的日期

我最近升级到iOS 6，并注意到dateFromString不能正常工作，除非我的dateFormat有问题。它在升级之前工作正常

代码：

NSString *string = @"2012-09-24 - Sun";
NSLog(@"string = %@", string);
NSDateFormatter *df = [[NSDateFormatter alloc] init];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en-US"];
[df setLocale:locale];
[df setDateFormat:@"yyyy-MM-dd - EEE"];
NSDate *date = [df dateFromString:string];
NSLog(@"date = %@", date);

string = 2012-09-24 - Sun
date = 1999-12-26 05:00:00 +0000

输出：

NSString *string = @"2012-09-24 - Sun";
NSLog(@"string = %@", string);
NSDateFormatter *df = [[NSDateFormatter alloc] init];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en-US"];
[df setLocale:locale];
[df setDateFormat:@"yyyy-MM-dd - EEE"];
NSDate *date = [df dateFromString:string];
NSLog(@"date = %@", date);

string = 2012-09-24 - Sun
date = 1999-12-26 05:00:00 +0000

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有什么建议吗？

看起来格式化程序更改了iOS 6中的规格：

• OS X v10.8和iOS 6.0中的格式化程序使用版本
• iOS 5.0-5.1中的格式化程序使用版本
请检查以下内容：

NSString *string = @"2012-09-24 - Sun";
NSLog(@"string = %@", string);
NSDateFormatter *df = [[NSDateFormatter alloc]init];
[df setDateFormat:@"yyyy-MM-dd - EEE"];
NSDate * date = [df dateFromString: string];
NSDate * sourceDate = date;
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];
NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:sourceDate];
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:sourceDate];
NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;   
date = [[NSDate alloc] initWithTimeInterval:interval sinceDate:date];
NSLog(@"date = %@", date);  

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有官方文件吗？@mihirmehta-有。看，你找到解决办法了吗？我也面临同样的问题