I have a string "2012-06-04" and am having a hard time converting it to: June 4, 2012.
Is there a quick way to transform this? I come from a ruby world where you would convert everything to seconds and that back out to the format you need it. Is there a reference that shows how to do that?
Thanks
One way to do so is to convert the string to an NSDate using the NSDateFormatter with the 2012-06-04 format, and then convert the NSDate back to a string using the June 4, 2012 format:
NSString* input = #"2012-06-04";
NSDateFormatter* df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"yyyy-MM-dd"];
NSDate* date = [df dateFromString:input];
[df setDateFormat:#"MMMM d, yyyy"];
return [df stringFromDate:date];
The format string's syntax is described in UTS #35.
Something like
NSDateFormatter *fromDateFormatter = [[NSDateFormatter alloc] init];
fromDateFormatter.dateFormat = #"yyyy-MM-dd";
NSDate *date = [fromDateFormatter dateFromString:#"2012-06-04"];
NSLog(#"%#", date);
NSDateFormatter *toDateFormatter = [[NSDateFormatter alloc] init];
toDateFormatter.dateFormat = #"MMMM d, yyyy";
NSString *toDate = [toDateFormatter stringFromDate:date];
NSLog(#"%#", toDate);
#=> 2012-05-30 20:51:12.205 Untitled[1029:707] 2012-06-03 23:00:00 +0000
#=> 2012-05-30 20:51:12.206 Untitled[1029:707] June 4, 2012
To work this out you can use Apple's class references NSDateFormatter and other sources like this IPHONE NSDATEFORMATTER DATE FORMATTING TABLE and some trial and error
Related
So I have this string date
"2017-07-25T11:02:00.000Z"
I want to format this date so that I can assign it to my date picker
Below is my code
//Set the date
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"MMM d, yyyy"];
NSDate *dateFromString = [dateFormatter dateFromString:self.userDefaultQuotationModel.dateTime];
[self.quotationDatePicker setDate:dateFromString];
however, if I set the date format as #"yyyy-MM-dd'T'HH:mm:ss.SSSZZZ", it gives me the correct result based on the format. But afterwards, I can't assign this date to the date picker.
I set the date format as #"MMM d, yyyy" because I am looking for the the nearest format as Date Picker's
my Date picker format is Jul 25 2017. I get the date format from this following website
http://nsdateformatter.com/
The *dateFromString does not contain any value after the dateFromString function, which is nil
I have been searching regarding this topic but couldn't find any. What am I missing here? thank you
NSString *strInputDateString = #"2017-07-25T11:02:00.000Z";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss.SSSZZZ"];
//Set new dateFormate
NSDate *date1 = [dateFormat dateFromString:strInputDateString];
[dateFormat setDateFormat:#"MMM d, yyyy"];
NSString *strOutputDateString = [dateFormat stringFromDate:date1];
NSLog(#"%#",strInputDateString);
NSLog(#"%#",strOutputDateString);
I am having troubles converting a short Zulu date format to a NSDate Object. I have found some answers for converting Zulu strings but mine looks like:
20111210T1000
And based on my researches, I am trying to do:
NSDateFormatter *f = [[NSDateFormatter alloc] init];
[f setDateFormat:#"yyyyMMdd'T'HHmmss Z"];
NSDate *date = [f dateFromString:[str stringByReplacingOccurrencesOfString:#"Z" withString:#" +0000"]];
[f release];
I've tried many ways but my date is still nil...
How should I set my NSDateFormatter?
Here is a quick fix, in your date string you miss the timezone in the format, you should append (Paris one here) to your string and it should work. Also the format was wrong.
NSDateFormatter* df = [[NSDateFormatter alloc]init];
[df setDateFormat:#"yyyyMMdd'T'SSSZ"];
NSString* str = #"20111210T1000-0100"; // NOTE -0100, GMT +1 Paris zone
NSDate* date = [df dateFromString:str];
NSLog(#"%#", date);
I would like to convert a Unix timestamp e.g 1315401371 stored as a NSString into a date format of 23:00 12 October 2011.
There are a number of similar questions being ask in relation to this however I wish to use billymeltdown / nsdate-helper methods
I have imported the 2 files (.h and .m) into my project, but have not manage to get further than that.
There is documentation, which I have read, however I am still very new to objective C and do not understand how I actual use the libraries.
Thanks in Advance.
You should use NSDateFormatter
NSTimeInterval timestamp = 1315401371;
NSDate *date = [NSDate dateWithTimeIntervalSince1970:timestamp];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"HH:mm dd MMMM yyyy"]; // use one d for 7 October instead of 07 October
// For english month names
NSLocale *usLocale = [[NSLocale alloc] initWithLocaleIdentifier:#"en_US"];
[dateFormatter setLocale:usLocale];
[usLocale release];
NSString *dateString = [dateFormatter stringFromDate:date];
[dateFormatter release];
HI all,
i have a date string like this
2011-03-31 13:32:02
i want to convert this date string to display like this
Thursday – March 31, 2011
Please help to solve this
Thanks in advance
Use NSDateFormatter. First initialize the formatter with the appropriate format to parse the source string, something like this:
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
Then use it to parse the date string:
NSDate *date = [formatter dateFromString:string];
Now you can create a new formatter to output in the new format, or just reuse the existing one:
[formatter setDateFormat:#"EEEE - MMMM dd, yyyy"];
NSString *output = [formatter stringFromDate:date];
I've probably overlooked something simple, but I can't figure out how to convert a specific date format in Objective-C. I'm receiving dates in this format:
Sun, 10 Oct 2010 01:44:00 +0000
And I need to convert it to a long format with no time, like this:
October 10, 2010
I've tried using NSDateFormatter, but when I try to get a date from the string, it always comes back nil. I've tried it this way:
NSString *dateFromData = [articleData objectAtIndex:5];
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateStyle:NSDateFormatterLongStyle];
[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
NSDate *date = [dateFormatter dateFromString:dateFromData];
NSString *formattedDateString = [dateFormatter stringFromDate:date];
The date string always comes back nil. Am I missing something simple here?
This is the code I got to work, couldn't get the other format string to function
NSString *dateFromData = #"Sun, 10 Oct 2010 01:44:00 +0000";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE, dd MMM yyyy hh:mm:ss zzzz"];
NSTimeZone *gmt = [NSTimeZone timeZoneWithAbbreviation:#"GMT"];
[dateFormatter setTimeZone:gmt];
NSDate * date = [dateFormatter dateFromString:dateFromData];
[dateFormatter setDateStyle:NSDateFormatterLongStyle];
NSString *formattedDateString = [dateFormatter stringFromDate:date];
The problem is you need to use two date formatters. One to parse the original format and one to produce the desired output. You also can't use the LongStyle date format as it doesn't match your input style.
NSDateFormatter *df = [[NSDateFormatter alloc] initWithDateFormat:#"%a, %d %b %Y %H:%M:%S %z"
allowNaturalLanguage:false];
NSDate *d = [df dateFromString:#"Sun, 10 Oct 2010 01:44:00 +0000"];
NSDateFormatter *df2 = [[NSDateFormatter alloc] initWithDateFormat:#"%B %d, %Y"
allowNaturalLanguage:false];
[df2 stringFromDate:d]
(Note, I wrote this code in MacRuby and ported it back to Objective-C so there maybe syntax errors.)
irb(main):001:0> df = NSDateFormatter.alloc.initWithDateFormat("%a, %d %b %Y %H:%M:%S %z", allowNaturalLanguage:false)
=> #<NSDateFormatter:0x20021b960>
irb(main):002:0> d = df.dateFromString("Sun, 10 Oct 2010 01:44:00 +0000")
=> #<NSCalendarDate:0x2002435e0>
irb(main):004:0> df2 = NSDateFormatter.alloc.initWithDateFormat("%B %d, %Y", allowNaturalLanguage:false)
=> #<NSDateFormatter:0x20026db60>
irb(main):005:0> df2.stringFromDate(d)
=> "October 09, 2010"