Trying to convert dateFromString. please help

[pavanindira]

Hi Friends,

I am trying to sort date by using the below code, but this dose not work, can anyone please help me.

NSString *str = [NSString stringWithFormat:@"%@",[NSDate date]];
NSDateFormatter *coll = [[[NSDateFormatter alloc] init]autorelease];
NSLocale *locale = [[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease];
[coll setLocale:locale];
[coll setDateFormat:@"EEE, dd MMM yyyy HH:mm:ss z"];
//[form setDateStyle:NSDateFormatterMediumStyle];
//[form setTimeStyle:NSDateFormatterMediumStyle];
//[form setTimeZone:[NSTimeZone localTimeZone]];
NSDate *date = nil;
date =[coll dateFromString:str];
NSLog(@"date has been tested %@",date);

Thanks in Advance.
Pavan CH

[Duncan C]

Originally Posted by pavanindira

Hi Friends,

I am trying to sort date by using the below code, but this dose not work, can anyone please help me.

NSString *str = [NSString stringWithFormat:@"%@",[NSDate date]];
NSDateFormatter *coll = [[[NSDateFormatter alloc] init]autorelease];
NSLocale *locale = [[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease];
[coll setLocale:locale];
[coll setDateFormat:@"EEE, dd MMM yyyy HH:mm:ss z"];
//[form setDateStyle:NSDateFormatterMediumStyle];
//[form setTimeStyle:NSDateFormatterMediumStyle];
//[form setTimeZone:[NSTimeZone localTimeZone]];
NSDate *date = nil;
date =[coll dateFromString:str];
NSLog(@"date has been tested %@",date);

Thanks in Advance.
Pavan CH

You said "this dose not work". That is really, really NOT helpful.

What does it do? What date strings are you testing it with, and what are you getting as a result? Be specific, man!

[pavanindira]

Originally Posted by Duncan C

You said "this dose not work". That is really, really NOT helpful.

What does it do? What date strings are you testing it with, and what are you getting as a result? Be specific, man!

Sorry for not providing details about the requirement in detail.

I am tring to get date from the system date using "NSDate" and this should be sorted(most recent first) and displayed as "MMM dd yyyy" (Ex: Dec 25 2012).

So i am tring to get the date and assigning it to a NSDate variable, using the below code. But at the end i am left with a NIL value in the log.

[JamesCahall]

Originally Posted by pavanindira

Sorry for not providing details about the requirement in detail.

I am tring to get date from the system date using "NSDate" and this should be sorted(most recent first) and displayed as "MMM dd yyyy" (Ex: Dec 25 2012).

So i am tring to get the date and assigning it to a NSDate variable, using the below code. But at the end i am left with a NIL value in the log.

You are getting nil because you are trying to convert a string that is not in the format that you specified in the date formatter and converting it to an NSDate.
It has no idea how to convert your string.

NSLog(@"str: %@", str);
"str: 2012-02-10 05:01:33 +0000"

This works:
NSString *dateString = [coll stringFromDate:[NSDate date]];
NSLog(@"Date String: %@", dateString);
"Date String: Thu, 09 Feb 2012 21:05:31 PST"
NSDate *date = [coll dateFromString:dateString];
NSLog(@"date has been tested %@",date);
"date has been tested 2012-02-10 05:05:31 +0000"

[pavanindira]

Originally Posted by JamesCahall

You are getting nil because you are trying to convert a string that is not in the format that you specified in the date formatter and converting it to an NSDate.
It has no idea how to convert your string.

NSLog(@"str: %@", str);
"str: 2012-02-10 05:01:33 +0000"

This works:
NSString *dateString = [coll stringFromDate:[NSDate date]];
NSLog(@"Date String: %@", dateString);
"Date String: Thu, 09 Feb 2012 21:05:31 PST"
NSDate *date = [coll dateFromString:dateString];
NSLog(@"date has been tested %@",date);
"date has been tested 2012-02-10 05:05:31 +0000"

Hi James,

yes what you specified is working, but my requirement is to get the date in "dd MMM yyyy" format.

thanks for the help.
I am still not able to get the desired output.

[JamesCahall]

Originally Posted by pavanindira

Hi James,

yes what you specified is working, but my requirement is to get the date in "dd MMM yyyy" format.

thanks for the help.
I am still not able to get the desired output.

Your output and usable string IS in day month year format:

See line:
NSLog(@"Date String: %@", dateString);

NSDate does not have a format in itself. NSDateFormatter simply translates dates to strings and visa versa based on a format and other optional variables such as locale.

James