我有一个来自服务器的时间戳，如下所示:

2013-04-18T08:49:58.157+0000

我已经尝试删除冒号，我已经尝试了所有这些:

Converting an ISO 8601 timestamp into an NSDate: How does one deal with the UTC time offset?

Why NSDateFormatter can not parse date from ISO 8601 format

这是我现在的位置:

+ (NSDate *)dateUsingStringFromAPI:(NSString *)dateString {


    NSDateFormatter *dateFormatter;
    dateFormatter = [[NSDateFormatter alloc] init];

    //@"yyyy-MM-dd'T'HH:mm:ss'Z'" - doesn't work
    //@"yyyy-MM-dd'T'HH:mm:ssZZZ" - doesn't work
    //@"yyyy-MM-dd'T'HH:mm:sss" - doesn't work 

    [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"];
    [dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"GMT"]];

    // NSDateFormatter does not like ISO 8601 so strip the milliseconds and timezone
    dateString = [dateString substringWithRange:NSMakeRange(0, [dateString length]-5)];

    return [dateFormatter dateFromString:dateString];
}

我最大的问题之一是，我上面的日期格式真的是 ISO 8601 吗？我从人们那里看到的所有示例，每个示例的格式都略有不同。有些有 ...157-0000，有些最后什么都没有。

最佳答案

这对我有用:

NSString *dateString = @"2013-04-18T08:49:58.157+0000";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSZ"];
// Always use this locale when parsing fixed format date strings
NSLocale *posix = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
[formatter setLocale:posix];
NSDate *date = [formatter dateFromString:dateString];
NSLog(@"date = %@", date);

https://stackoverflow.com/questions/17558859/