I am beginner in ios development.
I am stuck in NSdateFormatter class.
My question is:
Which kind of formatter support on this date "Oct, 25th"?
Please help me,
Thanks in advance...
you can format date by "Oct, 25" you must append "th" with the formatted date
I would like te stress you not to use explicit date formats, since if the users setting is not set to english the date might not be presented correctly.
Instead you should use the dateStyle and timeStyle properties of NSDateFormatter.
See Apple NSDateFormatterStyle documentation to see which one will work for you.
[yourDateFormatter setDateFormat:#"LLL,dd'th'"];
LLL: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec
dd: 01~31 ( Day of Month)
for more info about date-formate see my blog from this link..
MyBlog
For Example
call this method with bellow 2 line code..
NSString *strDate = [self StringFromDate:#"Oct, 25th"];
NSLog(#"\n New Date is HERE =====>> %#",strDate);
this is the method just paste in your .m file
-(NSString *)StringFromDate:(NSString *)DateLocal{
// DateLocal = [self trimString:DateLocal];
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"LLL,dd'th'"];
NSDate *date = [dateFormatter dateFromString: DateLocal];
NSString *tt = [dateFormatter stringFromDate:date];
NSDate *dateReturn = [dateFormatter dateFromString:tt];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"dd,LLL"];// set the format which you want
NSString *dateString = [dateFormat stringFromDate:dateReturn];
NSLog(#"Date is HERE =====>> %#",dateString);
[dateFormat release];
return dateString;
}
Related
I'm working on an assignment that allows the user to display events that are happening 'today'. I have parsed the XML file and stored the contents into an array. The contents of the XML file consists of a title, description, date etc. The dates are in NSString format and I want to convert them into NSDates and compare them with today's date before displaying them in a UITableView.
I'm new to obj-c and I've searched online for help on NSDate, but I couldn't find what I need. Any links, advice or help on this is really appreciated. Thanks in advance (:
suppose dateString contains the date in string format
first get date from string:-
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"dd/mm/yyyy"];
NSDate *dateprevious = [formatter dateFromString:dateString];
Now get today date
NSDate *date=[NSDate date];
[formatter setDateFormat:#"dd"];
NSString *dateOfGame =[formatter stringFromDate:dateprevious];
NSString *todaydate =[formatter stringFromDate:date];
[formatter release];
if([todaydate isEqualToString:dateknown])
{
NSLog(#"date matched");
}
Depending on the format of the string, you can use this:
+ (id)dateWithNaturalLanguageString:(NSString *)string
To compare two dates you will find here a lot of usefull answers :)
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd-MM-yyyy , hh:mm a"];
[dateFormatter setDateStyle:NSDateFormatterLongStyle];
NSDate *date = [[dateFormatter datefromString:date] retain];
[dateFormatter release];
You can use this one
Have a look at NSDateFormatter
It has a method called dateFromString
Like you could do the following:
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"dd/mm/yyyy"];
NSDate *date = [formatter dateFromString:#"5/5/2011"];
I'm new to iPhone development. I want to set default date to NSDate Object as string. I don't see any easy way or method...
I think there might be a method in NSCalender? If there's such a method, please tell me.
Thanks in advance.
I'm not totally clear on what you are asking, but to create an instance of an NSDate object with the current date, one calls:
NSDate * myDate = [NSDate date];
If you are saying that you have a c-string or NSString that needs to be parsed to initialize an NSDate object, that's another question.
I have some code posted here:
How get a datetime column in SQLite with Objective C
that shows how to create NSDates from NSStrings using NSDateFormatter.
If you want to create an NSDate from a string, you need to use an NSDateFormatter to do it. It's important to note that the formatter will use the current locale's time zone when constructing the date, unless you put a time-zone in as part of the format. For more information about constructing time zones, see NSTimeZone.
For example, to create a date using the ubiquitous format '2011-01-16 00:00' in UTC, you would do:
NSDateFormatter* formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"yyyy-MM-dd HH:mm"];
// Only certain abbreviations are okay, like UTC. See docs for more info
[formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:#"UTC"]];
NSDate* midnight_26_jan_2011_utc = [formatter dateFromString:#"2011-01-26 00:00"];
// this will display in your system locale
// (for me, it shows 2011-01-25 19:00 +0500 because I'm America/New_York time)
NSLog(#"date: %#", midnight_26_jan_2011_utc);
[formatter release];
Edit: Added time to format string.
You will need to look at the NSDate and NSDateFormatter classes. Here's a simple example of how to use them:
NSString* defaultDateString = [NSString stringWithFormat:#"2011-01-22 15:30:00"];
NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSDate* defaultDate = [dateFormatter dateFromString:defaultDateString];
[dateFormatter release];
and if you wanted to get the string from a date you can just use:
NSString* defaultDateString = [dateFormatter stringFromDate:defaultDate];
NSDateFormatter *DateFormatter=[[NSDateFormatter alloc] init];
[DateFormatter setTimeZone:[NSTimeZone defaultTimeZone]];
[DateFormatter setDateFormat:#"yyyy-MM-dd hh:mm:ss"]; //here,you can set the date format as you need
NSDate *now = [[[NSDate alloc] init]autorelease];
NSString *theDate = [DateFormatter stringFromDate:now];
Now, you can use the string the date. :)
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc]init]autorelease];
[dateFormatter setDateFormat:#"yyyy-mm-dd"];
NSDate *yourDate = [dateFormatter dateFromString:#"2011-01-26"];
I'm trying to use the NSDate dateFromString method but I'm getting an warning and it's crashing the app. The code looks like:
NSString *pickerDate = [NSString stringWithFormat:#"%#", timeSelector.date];
NSDate *defaultDate = [NSDate dateFromString:pickerDate];
The warning is:
'NSDate' may not respond to '+dateFromString'.
It appears that method is deprecated (in the midst of an upgrade from XCode 2 to 3.
What alternate method can I use to create a date from a string?
NSDateFormatter is the intended way for you to get an NSDate from an NSString.
The most basic usage is something like this:
NSString *dateString = #"3-Aug-10";
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
dateFormatter.dateFormat = #"d-MMM-yy";
NSDate *date = [dateFormatter dateFromString:dateString];
I had a same problem.
I changed the dateFormat from #"YYYY/M/d H:m:s" to #"YYYY/MM/dd HH:mm:ss" as follows.
Then it works on my iPhone 4. (Xcode 4.5 for iOS 6.)
NSDateFormatter *dateFormatter1;
NSString *dateStr1=#"";
NSDate *gantanDate1;
dateFormatter1 = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter1 setLocale:[NSLocale systemLocale]];
[dateFormatter1 setTimeZone:[NSTimeZone systemTimeZone]];
dateFormatter1.dateFormat=#"YYYY/MM/dd HH:mm:ss";
dateStr1=#"2012/1/1 00:00:00"];
// in his case, dateStr1=pickerDate;
gantanDate1 = [dateFormatter1 dateFromString:dateStr1];
Hi Silber everyone says the same thing to convert the string date to date object.Try this i think you have used two date formatters in two places where you are saving date to string and getting date from string.right try to use the same date formatters in both places. It will solve your problem.
I am trying to create a formatter that will convert the date format shown to an NSDate object:
NSString *dateStr = #"2010-06-21T19:00:00-05:00";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZZZ"];
NSDate *date = [dateFormat dateFromString:dateStr];
The issue is the timezone -05:00, which is not parsed properly with the format above. Any suggestions?
To process the time zone with the colon in it, you just need to use 5 'Z's. This is a pretty common date format, the ISO-8601 format. This will only work on iOS 6.x+
-(NSDate *) dateFromString:(NSString *)string {
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
return [formatter dateFromString:string];
}
Honestly, you'll just have to change the source data (removing the colon) before running it through the formatter. Your original date string is non-standard and none of the time zone format strings will work properly on it.
You can see the valid inputs on unicode.org.
ZZZ e.g. "-0500"
ZZZZ e.g. "GMT-05:00"
Nothing for "-05:00"
May be I missed something but ZZ worked for me.
I used:
#"yyyy-MM-dd'T'HH:mm:ss.SSSZZ"
for
2014-02-27T08:00:00.000+04:00
This is the default time format I got from a Sinatra ActiveRecord backend. Here is my solution.
-(NSDate *) dateFromString:(NSString *)string{
NSMutableString * correctedDateString = [[NSMutableString alloc] initWithString:string];
[correctedDateString deleteCharactersInRange: NSMakeRange(22, 1)];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZZZ"];
return [formatter dateFromString:correctedDateString];
}
This is the only solution that worked for me:
[dateFormat setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
5 ZZZZZ - heres a category I wrote with some sample of GMT to BST
https://github.com/clearbrian/NSDateFormatter_ISO_8601
I am pulling data from an RSS Feed. One of the keys in the feed is is a string representing the date and time the item was created.
I am trying to convert this string value to an NSDate. The string value is returned from the RSS feed as: 2009-11-18T22:08:00+00:00
I tried the following code to no avail:
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"yyyyMMdd HH:mm"];
NSDate *myDate = [df dateFromString: [[storedDates objectAtIndex:indexPath.row] objectForKey: #"UsersDate"]];
Ideally; on top of converting the value to a NSDate value, I would also like to format it using the localised date format on the handset.
Any pointers would be a great help.
Kind Regards
To retrieve the dateFormat:
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *myDate = [df dateFromString: [[storedDates objectAtIndex:indexPath.row] objectForKey: #"UsersDate"]];
You can use the predefined formats if you would like to format time and date according to the user's locale:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterShortStyle];
[dateFormatter setTimeStyle:NSDateFormatterLongStyle];
NSLog(#"%#",[dateFormatter stringFromDate:someDate]);
[dateFormatter release]; // don't forget to release the dateformatter
Check the documentation to see which formatter suits you best.
Actually date form in RSS feed may differ, so best way to parse it is following
[NSDate dateFromInternetDateTimeString:processedText formatHint:DateFormatHintRFC822];
This is not a standard function, library for it can be found here https://gist.github.com/953664