how to get NSDate from String "2009-03-02 00:00:00 +0200"

[dobry]

A NSDate is in SQLite saved as a String like "2009-03-02 00:00:00 +0200".
How can I get back the NSDate if the date is in a NSString with this format?

For Firmware 2.2.1 it works like this:

- (NSDate *)dateFromString:(NSString *)parameterString {
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setFormatterBehavior:NSDateFormatterBehavior10_0];
  [dateFormatter setDateFormat:@"%m/%d/%Y %H:%M:%S %z"];
  return [[dateFormatter dateFromString:parameterString] copy];
}

But in FW 3.0 NSDateFormatterBehavior10_0 is not available anymore. What is the solution for FW 3.0?

[MikesTooLz]

I would like to know as well.
I have an app that loads RSS feeds and the published dates are formated like that. In my case I just needed to check if the date is for the current year. I ended up just checking the string to see if it contains 2009.

[dobry]

nobody has a solution?

[nagarajan]

Originally Posted by dobry

A NSDate is in SQLite saved as a String like "2009-03-02 00:00:00 +0200".
How can I get back the NSDate if the date is in a NSString with this format?

For Firmware 2.2.1 it works like this:

- (NSDate *)dateFromString:(NSString *)parameterString {
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setFormatterBehavior:NSDateFormatterBehavior10_0];
  [dateFormatter setDateFormat:@"%m/%d/%Y %H:%M:%S %z"];
  return [[dateFormatter dateFromString:parameterString] copy];
}

But in FW 3.0 NSDateFormatterBehavior10_0 is not available anymore. What is the solution for FW 3.0?

A simple following conversion can do this!!!

- (NSDate *)dateFromStringNSString *)string.

Check it up.

Regards,
Nagarajan T.

[nagarajan]

Originally Posted by MikesTooLz

I would like to know as well.
I have an app that loads RSS feeds and the published dates are formated like that. In my case I just needed to check if the date is for the current year. I ended up just checking the string to see if it contains 2009.

Could you please explain how to check whether a string is available in a set of text???

Regards,
Nagarajan T.

[dobry]

@nagarajan: It doesn't work with FW 3.0:

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
NSLog(@"datum=%@",[dateFormatter dateFromString:@"2009-03-02 00:00:00 +0200"]);

NSLog shows: datum=1970-01-01 03:00:00 +0300

[nagarajan]

Then you can store and retrieve it as a Date variable in your database.

Regards,
Nagarajan T.

[BSDimwit]

Setup your table to store the date as a REAL type, then use the following to store and retrieve the date.

Store the date

sqlite3_bind_double(dehydrate_statement, 4, [myDate timeIntervalSince1970]);

Retrieve the date

self.myDate = [NSDate dateWithTimeIntervalSince1970:sqlite3_column_double(init_statement, 2)]

Or if you must do it your way...

NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterFullStyle];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss ZZZ"];
		
NSString *dateString = [dateFormatter stringFromDate:date];

NSDate *myDate = [dateFormatter dateFromString:dateString];
[dateFormatter release];

Works like a champ in my code.

[dobry]

Thank you very much BSDimwit.

[chesterbr]

Originally Posted by nagarajan

A simple following conversion can do this!!!

- (NSDate *)dateFromStringNSString *)string.

Check it up.

Regards,
Nagarajan T.

Be careful: I used that on an app, and got a warning. Ignored it just to find out it is not documented and Apple rejected my app for that :-(

[BSDimwit]

Originally Posted by chesterbr

Be careful: I used that on an app, and got a warning. Ignored it just to find out it is not documented and Apple rejected my app for that :-(

I believe you are mistaken. That method is not undocumented. Go check the NSDateFormatter class yourself.

dateFromString:
Returns a date representation of a given string interpreted using the receiver’s current settings.

- (NSDate *)dateFromStringNSString *)string

Parameters
string
The string to parse.

Return Value
A date representation of string interpreted using the receiver’s current settings.

Availability
Available in iPhone OS 2.0 and later.
See Also
– getObjectValue:forString:range:error:
– stringFromDate:
Related Sample Code
SeismicXML
URLCache
Declared In
NSDateFormatter.h

[nagarajan]

Yes, what BSDimwit said was correct.
Go and search for dateFromString, you will find a lot of conversations here.

[Yuvaraj.M]

Hi friends.

Me too have the same problem. I have used the code that is given by Mr.BSDimwit. This is converting the the date from NSString to NSDate. But, there the time is changed. Here i have show the code that is i tried,

NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterFullStyle];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss ZZZ"];

NSString *dateString = [dateFormatter stringFromDate:[timePicker date]];
NSLog(@"DateString : %@", dateString);

NSDate *myDate = [dateFormatter dateFromString:dateString];
NSLog(@"My Date : %@", myDate);
[dateFormatter release];

My NSLog output is:
DateString : 2011-09-13 11:51:11 +0530 (This is correct date and time from 'stringFromDate')
My Date : 2011-09-13 06:21:11 +0000(After converting NSString from NSDate it shows the wrong time).

I want the result in NSDate format with time, how to omit +0000 digits from the date? Thanks for reading my poor english.

How to solve this problem? Can any one help me please?
Thanks for spending your valuable time with me.
Thanks in advance.