I am currently using an NSDateFormatter on my application to show the date in the format that i want. My NSDateFormatter looks like this : [formatter setDateFormat:#"MMM dd, yyyy hh:mm"]; which would give me dates like : Sep 02 , 2012 08:30 .
I have 2 questions. i want to show the time in military time how can i do that with the formatter? I know how to show the AM/PM but i would like the time above to look 20:30. Secondly how can i make the month appear as a number? September would be 09 .
This site has a nice table with the format specifiers you can use, follow up from that.
In this case, you should use [formatter setDateFormat:#"MM dd, yyyy HH:mm"]; To get 09 02, 2012 20:30
Use capital H for the hour and only two M's for the month.
[formatter setDateFormat:#"MM dd, yyyy HH:mm"];
Related
I get the following date from an API
"created_at":"Wed Jun 19 20:36:48 +0000 2013"
I don't know how to handle the "Wed" and "Jun", can't find any good documentation for this.
[dateFormatter setDateFormat:#"? ? dd HH:mm:ss '+00:00' YYYY"];
I have written the following method:
- (NSDate *)stringToDate:(NSString *)dateString
{
// Convert string to date
NSDateFormatter * dateFormat = [[NSDateFormatter alloc] init];
NSTimeZone *tz = [NSTimeZone timeZoneWithName:#"America/New_York"];
[dateFormat setDateFormat:#"M/d/yyyy HH:mm:ss"];
[dateFormat setTimeZone:tz];
NSDate * date = [dateFormat dateFromString:[NSString stringWithFormat:#"%# 00:00:00", dateString]];
return dateOnly;
}
When I call this with just a date such as 11/1/2013 or 11/13/2013 I get 2013-11-01 04:00:00 +0000 and 2013-11-13 05:00:00 +0000.
If I set a breakpoint on the return the date appears right, but if I break at in the calling function after this call, the date is returned with the time.
How come my time is not always 0. Can anyway tell me what is wrong in my function?
Thank you
UPDATE:
The input string is as follows: 11/1/2013 and 11/13/2013
NSDate is a point in time. It will always have a time component.
And if not printed as a string form a NSDateFormatter, the Date and time will always be the one of UTC/GMT.
The format and the date string must fit.
NSString *dateString = #"11/1/2013";
[dateFormat setDateFormat:#"M/d/yyyy"];
The one hour apart comes from the Daylight saving time. Till November, 3rd 2013 New York has Summer time. http://www.timeanddate.com/worldclock/clockchange.html?n=179
Ok, so can I ignore that? I am trying to compare NSDates when I do my comparison fails because of the time part
You should create dates with with a time during the day — i.e. noon — to be save of DST mess and compare those. Use NSComponents for that.
A must-see for any iOS/Cocoa-Developer: the fantastic WWDC 2011 Video "Session 117 - Performing Calendar Calculations".
I want to search my Array of Dictionary for particular date.Ex I want to search my array of dictionary for date "16 Jan 2012" which is in string format but my dictionary item in array contains date and time, say "16 Jan 2012 somehours:somemins:somesecs".I am converting string format date in NSDate format but I am getting date as 2012-01-15 18:30:00 +0000 instead of 2012-01-16.I am using NSPredicate to search for the date which convert date into seconds as follows "Date == CAST(348345000.000000, "NSDate")" and compare so even though my records contain date as "16 Jan 2012 somehours:somemins:somesecs" it will not satisfied the criteria.I want that the records/array containing date as "16 Jan 2012 somehours:somemins:somesecs" should satisfied the search criteria.Please can anyone know how to achieve this?
Thanks in advance!
To rid yourself of NSDateFormatter's automatic adjustment for your time zone use something like this.
dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
To elaborate; "16 Jan 2012" Contains no hour, minute, or seconds value, so when parsing it with an NSDateFormatter one would expect an NSDate with a description of "2012-01-16 00:00:00 +000" But that's not what you're getting because the date formatter is adjusting for the 5:30 Hours between GMT and India?(Assuming based on :30 differential). By setting the date formatter's time zone explicitly you avoid this problem.
You need to use NSDateFormatters to convert the date string from one format to another. You can have an inputDateFormatter where you use dateFromString to give you an NSDate, and then feed this into an outputDateFormatter which gives your desired string.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd MMM yyyy"];
NSString *dateInFormatYouWant = [dateFormatter stringFromDate:yourDate]
I'm not sure if there is a more efficient way of doing it than this.
I try to convert a string to NSDATE with no luck unfortunately.
Friday, October 22, 11:26:45 ET 2010
I know the options for formatting (http://sree.cc/objective-c/nsdate-format-string-in-objective-c) but i cant get it to work.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"???????"];
anyone?
Date Format Specifiers.
So you'd probably need something like:
[dateFormatter setDateFormat:#"eeee, MMMM dd, HH:mm:ss z yyyy"];
eeee - Local day of week spelled out
MMMM - Month spelled out
dd - day of month with no leading zeros
HH - hour of day (24 hour format)
mm - minutes of hour (with leading zero)
ss - seconds of minute (with leading zero)
z - timezone (short wall time)
yyyy - calendar year
I'm trying to use only a NSDateFormatter to format string representation of a date/time to an NSDate object. The issue is that I can't figure out how to allow the ordinal suffixes in the format.
So lets say I have a string
"Wednesday, August 11th 2010 8:00 PM"
What one line NSDate dateFormat should I use?
Like "EEEE, MMM dd'th' yyyy h:mm a" would work, but that will only work for ordinal days ending in 'th', whereas i need a single format that will allow for 1st, 2nd, 3rd, 4th 5th etc.
It seems like a wildcard character in the format string to accomplish this. I've tried a few things like: % * ?
This is apparently not possible with the NSDateFormatter.
You want to use an NSDateFormatter like so:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle: NSDateFormatterLongStyle];
NSDate *date = [dateFormatter dateFromString:dateString];
[dateFormatter release];
Either NSDateFormatterLongStyle or NSDateFormatterFullStyle should get you the results you're looking for.