CODEWITHSUNDEEP
objective-cformattingnsdaterfc3339
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Reputation: 8608

Convert RFC3339? string to NSDate

I am trying to convert a string that looks like this (not sure if that fully correct RFC3339 format): 

2014-07-07T16:11:02.085Z

To an NSDate. I've looked around and have tried multiple formats and am using code from Apple on converting around. Here is the formats I've been trying: 

@"yyyy'-'MM'-'dd'T'HH':'mm':'sss'Z'" //apples
@"yyyy-MM-dd'T'HH:mm:ss.'999Z'"
@"yyyy-MM-dd'T'HH:mm:ss.sss'Z'"
@"yyyy-MM-dd'T'HH:mm:ss"

How I'm going about it: 

NSDateFormatter *rfc3339DateFormatter = [[NSDateFormatter alloc] init];
NSLocale *enUSPOSIXLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];

[rfc3339DateFormatter setLocale:enUSPOSIXLocale];
[rfc3339DateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss"];
[rfc3339DateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];

// Convert the RFC 3339 date time string to an NSDate.
NSDate *date = [rfc3339DateFormatter dateFromString:@"2014-07-07T16:11:02.085Z"];

NSLog(@"date: = %@", date);

NSString *userVisibleDateTimeString;
if (date != nil) {
    // Convert the date object to a user-visible date string.
    NSDateFormatter *userVisibleDateFormatter = [[NSDateFormatter alloc] init];
    assert(userVisibleDateFormatter != nil);

    [userVisibleDateFormatter setDateStyle:NSDateFormatterShortStyle];
    [userVisibleDateFormatter setTimeStyle:NSDateFormatterShortStyle];

    userVisibleDateTimeString = [userVisibleDateFormatter stringFromDate:date];
}

NSLog(@"userVisibleDateTimeString = '%@'", userVisibleDateTimeString);

Upvotes: 1

Views: 1761

Answers (1)

Martin R
Martin R

Reputation: 539725

Your third try is almost correct. The date format should be

@"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"

with capital "S" for "fractional seconds".

Upvotes: 4

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