I am trying to parse a date string from xml into an NSDate object in an iPhone app
I am aware this must have been asked before, however, I believe I have the right syntax, but it is not working. Is there a problem with my code?
The date string I need to parse is:
2011-01-21T12:26:47-05:00
The code I am using to parse it is:
self.dateFormatter = [[NSDateFormatter alloc] init];
[self.dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
[self.dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease]];
[self.dateFormatter setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'"];
...
else if([elementName isEqualToString:kUpdated]){
self.currentQuestion.updated = [self.dateFormatter dateFromString:self.currentParsedCharacterData ];
}
Any help greatly appreciated. Thanks!
**Based on the link reference from theChrisKent I fixed the problem like so:
else if([elementName isEqualToString:kLastOnDeck]){
NSString *dateStr = self.currentParsedCharacterData;
// we need to strip out the single colon
dateStr = [dateStr stringByReplacingOccurrencesOfString:@":"
withString:@""
options:0
range:NSMakeRange([dateStr length] - 5,5)];
self.currentQuestion.lastOnDeck = [dateFormatter dateFromString:dateStr];
}
You don't need near as many single quotes as you have (only needed on non date/time characters), so change this:
[self.dateFormatter setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'"];
To this:
[self.dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZ"];
...
self.currentQuestion.updated = [self.dateFormatter dateFromString:[self.currentParsedCharacterData stringByReplacingOccurrencesOfString:@":" withString:@"" options:0 range:NSMakeRange([self.currentParsedCharacterData length] – 5,5)]];
Documentation here: https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/DataFormatting/Articles/dfDateFormatting10_4.html#//apple_ref/doc/uid/TP40002369-SW1
Unicode Format Patterns: http://unicode.org/reports/tr35/tr35-6.html#Date_Format_Patterns
Dealing with TimeZones with Colons (+00:00): http://petersteinberger.com/2010/05/nsdateformatter-and-0000-parsing/