So I have a date string I receive that looks like this: "2013-03-20T21:13:26-7:00" that I receive from a web back end. I have no control over the back end, just a fyi.
My preference would be to have the date formatted like this: 9:13pm at 3/20.
When I do the following
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
NSDate *date = [dateFormatter dateFromString:#"2013-03-20T21:13:26-7:00"];
date is null.
My first thought is that the date string looks odd, and maybe I should remove the T and the "-7:00", as the "-7:00" is appended to every date I receive, and I'm not sure what it is for.
Even after the string looks like #"2013-03-20 21:13:26", date is still null.
I will admit I am not a pro at formatting dates, so if I could get some help with this issue, that would be great.
Thanks in advance!
You have to set dateFormat to the dateFormatter
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssz"];
NSDate *date = [dateFormatter dateFromString:#"2013-03-20T21:13:26-7:00"];
[dateFormatter setDateFormat:#"hh:mma 'at' MM/yy"];
NSString *dateString = [dateFormatter stringFromDate:date];
Set the date format for the dateFormatter, your problem lies in the last part of the date, secondly you can set the T in the dateformatter as follows
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssz"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"GMT"]];
NSDate *date = [dateFormatter dateFromString:#"2013-03-20T21:13:26-7:00"];
Set dateFormat,
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss"];
Related
Every time I try to pass a date string to the dateFromString function I get nil. I haven't read anywhere that things have changed since the iOS 7 update, but I am current on updates if that makes a difference on whether or not this still works the same way.
This is the code I'm using to create the date from string:
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setTimeZone:[NSTimeZone systemTimeZone]];
[dateFormat setLocale:[NSLocale systemLocale]];
[dateFormat setDateFormat:#"yyyy-MM-dd hh:mm:ss"];
[dateFormat setFormatterBehavior:NSDateFormatterBehaviorDefault];
and my date string is #"2015-08-22 13:00:00"
NSDate *date = [[NSDate alloc] init];
date = [dateFormat dateFromString:#"2015-08-22 13:00:00"];
return date;
The last line returns nil.
You need to change:
[dateFormat setDateFormat:#"yyyy-MM-dd hh:mm:ss"];
With:
[dateFormat setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
Since hh refers to the 12 hour clock and HH refers to the 24 hour clock.
hh represents hours in 12-hour-mode and 13 is out of range.
Replace hh with HH for 24-hour-mode
I had exactly the same problem last week and I solved it with this code:
NSDate *date = [NSDate dateWithTimeIntervalSince1970:dateFromString.doubleValue];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setLocale:[NSLocale currentLocale]];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:#"GMT"]];
[dateFormatter setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSString *stringDate = [dateFormatter stringFromDate:date];
Here you have a string named dateFromString because this is the object type for date which I recieve from server. This string is converted in double value and the date is calculated with time interval.
I suppose you need this date to be shown in a label or text view or another UI element like this, and just because of that I converted the date into NSString to be easy to use it. This is what I have in stringDate.
Let me know if I have to help you more.
smaller case letters for 12 hour clock and upper case for 24-hr. Change hh with HH.
I am trying to convert a NSString into a NSDate as shown below.
The value of NSString *startTime is 2015-06-23T01:37:53Z,
but the value of NSDate *startTimeDate is nil. What is wrong with the code ?
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"PST"]];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"];
NSDate *startTimeDate = [dateFormatter dateFromString:startTime];
check your date format
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"];
change into
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
Swift
check your date format
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
change into
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
There are at least 2 issues with your date format:
.SSS is used to read milliseconds but variable startTime doesn't contains milliseconds value;
Z represent GMT time zone and must not be escaped in dateFormat string.
Let's try to fix this ussues:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *startTimeDate = [dateFormatter dateFromString:startTime];
I recommend to use this NSDateFormatter date formatting table. It's very comprehensive and helpful.
The startTime you've specified doesn't have any milliseconds, so you want to use a dateFormat of:
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
If you want to support both styles of XML date strings then I recommend creating two NSDateFormatter instances for both date formats, and try the other if you get nil from the first.
Its simple one, converting NSString to NSDate we use NSDateformatter using dateFromString method. We need to provide the NSDateFormatter style with existing style for NSString
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *date = [dateFormatter dateFromString:#"2013-02-01T06:25:47Z"];
NSTimeZone *pdt = [NSTimeZone timeZoneWithAbbreviation:#"PDT"];
[dateFormatter setTimeZone:pdt];
[dateFormatter setDateFormat:#"HH:mm:ss zzz"];
[dateFormatter setDateFormat:#"K:mm a, z"];
NSString * updated String = [dateFormatter stringFromDate:date];
I'm processing a JSON string, which is date time string in the format: 2013-01-07T12:30:00+11:00
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSString *startString = (NSString*)[dictionary objectForKey:#"start_time"];
NSDate *startTime = [dateFormatter dateFromString:startString];
Works perfectly in iOS7, but startTime is nil in iOS6.0.
Any clue why? What's going on?
Answer is change Z to ZZZZ
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZZZZ"];
I have the following piece of code..
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]);
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?
You need to use lower case year indication, yyyy instead of YYYY:
[dateFormatter setDateFormat:#"MM/dd/yyyy HH:mm"];
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]);
You are using an incorrect format string. See the documentation. Basically, capital YYYY is "week of year year". Try to use lowercase yyyy instead, i.e.
[dateFormatter setDateFormat:#"MM/dd/yyyy HH:mm"];
I have set the locale and timezone but when I format the date, I always get invalid date. The month is always December and year is one less that the specified year. In my case I dont need the day component.
I checked other similar post but it didn't solved the problem.
Any help is appreciated. Thank you.
Here is the code:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.locale = [[[NSLocale alloc] initWithLocaleIdentifier:#"en_US"] autorelease];
dateFormatter.timeZone = [NSTimeZone timeZoneWithAbbreviation:#"GMT"];
[dateFormatter setDateFormat:#"MMM YYYY"];
NSDate *formattedDate = [dateFormatter dateFromString:#"Sep 2013"];
NSLog(#"Date: %#", [dateFormatter stringFromDate:formattedDate]);
[dateFormatter release]; dateFormatter = nil;
OUTPUT: Date: Dec 2012
"YYYY" format is used for "Week of Year" based calendars. Use "yyyy" format specifier instead:
[dateFormatter setDateFormat:#"MMM yyyy"];
I just wanted to add something to the great answer by Vladimir. If you do this before setting your locale, it seems that the date formatting goes crazy. What I had to do was to set the locale before setting the new format, and then use the setDateFormat to change the format based on the locale used.So something like this would do:
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setLocale:[NSLocale currentLocale]];//I wanted to set the locale to wherever user is using my app in
[formatter setDateFormat:#"MMM YYYY"];
NSDate *now = [NSDate Date];
NSString *fancyLookingDate = [formatter stringFromDate:now];