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Closed 10 years ago.
Possible Duplicate:
Convert NSDate to NSString
convert string to nsdate
Currently I have this code. It's for adding events to the calendar.
[...]
event.startDate = [[NSDate date] dateByAddingTimeInterval:86400];
event.endDate = [[NSDate date] dateByAddingTimeInterval:90000];
What I need is the code to add to a spesific start date and end date, and that's where NSString comes in handy. But I've had no luck converting it so far.
Refer this code :
NSString to NSDate
NSString *dateString = #"01-02-2010";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// this is imporant - we set our input date format to match our input string
// if format doesn't match you'll get nil from your string, so be careful
[dateFormatter setDateFormat:#"dd-MM-yyyy"];
NSDate *dateFromString = [[NSDate alloc] init];
// voila!
dateFromString = [dateFormatter dateFromString:dateString];
[dateFormatter release];
NSDate convert to NSString:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd-MM-yyyy"];
NSString *strDate = [dateFormatter stringFromDate:[NSDate date]];
NSLog(#"%#", strDate);
[dateFormatter release];
Hope it helps you
convert NSDate to NSString as
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
NSString *string = [dateFormatter stringFromDate:date];
[dateFormatter release];
That's an example if you need the format like “Nov 23, 1937”:
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateStyle= NSDateFormatterMediumStyle;
NSString* string= [formatter stringFromDate: date];
Check out the reference for other styles. If you need another style that hasn't a constant, you can use the date format, in this case it's:
formatter.dateFormat= #"MMM dd, yyyy"; // same as medium style
But the preferred way is to use the style, use the format only if there isn't a propert style.
Related
I had this code working for iOS5, but I just teste
NSDate *now = [NSDate date];
NSString *strDate = [[NSString alloc] initWithFormat:#"%#",now];
Does anyone know easy solution of rewriting this. The format of the date should be
dd mm yyyy
The correct way to format a date as a string is to use an NSDateFormatter. You can set the style to something appropriate for the user’s current locale with the -setDateStyle: method, or set the format to a particular string with -setDateFormat:.
Try this one , Definitely will get Proper solution:
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd"];//as per your requirement
NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init];
[timeFormat setDateFormat:#"HH:mm:ss"]; //as per your requirement
NSDate *now = [[NSDate alloc] init];
NSString *theDate = [dateFormat stringFromDate:now];
NSString *theTime = [timeFormat stringFromDate:now];
NSLog(#"theDate:%# "theTime:%#" , theDate, theTime);
This question already has answers here:
Formatting NSDate into particular styles for both year, month, day, and hour, minute, seconds
(8 answers)
Closed 9 years ago.
I know there are lot of questions on this topic . But I am not getting a proper solution to my
problem.I am retrieving Date from db , I am getting the Output as
as 2012-07-13 00:00:00.0 .
I am getting the output in the string format . I want the result of type string in the
format MM/dd/yyyy.I am doing the following
NSString *dateStr=#"2012-07-13 00:00:00.0";
NSDateFormatter *df=[NSDateFormatter new];
[df setDateFormat:#"yyyy-MM-dd"];
NSDate *res=[df dateFromString:dateStr];
But here I am getting res as nil .
You need to tell the formatter the whole format of the date, including hours, minutes...
This works:
NSString *dateStr=#"2012-07-13 00:00:00.0";
NSDateFormatter *df=[NSDateFormatter new];
[df setDateFormat:#"yyyy-MM-dd hh:mm:ss.S"];
NSDate *res=[df dateFromString:dateStr];
[df setDateFormat:#"MM/dd/yyyy"];
NSString *myString =[df stringFromDate:res];
Use this one
NSString *dateStr=#"2012-07-13 00:00:00.0";
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"yyyy-MM-dd HH:mm:ss.S"];
NSDate *date = [df dateFromString: dateStr];
[df setDateFormat:#"MM/dd/yyyy"];
NSString *convertedString = [df stringFromDate:date];
NSLog(#"Your String : %#",convertedString);
Output:
Your String : 07/13/2012
try this:
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"yyyy-MM-dd HH:mm:ss.s"];
NSDate *aDate=[formatter dateFromString:[NSString stringWithFormat:#"%#", #"2012-07-13 00:00:00.0"]];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterShortStyle];
[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
NSLog(#"%#", [dateFormatter stringFromDate:aDate]);
Try this
NSString *dateStr=#"2012-07-13 00:00:00.0";
NSDateFormatter *dateFormatter=[NSDateFormatter new];
[dateFormatter setDateFormat:#"yyyy-MM-dd hh:mm:ss.S"];
NSDate *dateObj=[dateFormatter dateFromString:dateStr];
[dateFormatter setDateFormat:#"MM/dd/yyyy"];
NSString *myString = [dateFormatter stringFromDate:dateObj];
NSLog(#"%#",myString);
In my project I have an NSString that contains data like this
NSString *s=#"20";
I want to convert this as "08:00 ". How can I do this?
I tried this one:
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"hh:mm a"];
NSString* dateString = [dateFormatter stringFromDate:#"20"];
but I am getting this dateString as null value.
You input as NSString, need output as NSString.
So intermediate work of NSDate and NSDateFormatter are not required.
You can attain this by :
NSString *s=#"20";
NSString *time=[NSString stringWithFormat:#"%d:00",[s integerValue]%12];
Please try to use this one .I hope it will work fine...
NSString *s=#"20";
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"HH"];
NSDate *date = [df dateFromString:s];
[df setDateFormat:#"hh:mm a"];
NSString *newTime = [df stringFromDate:date];
NSLog(#"Time : %#",newTime);
I have a UIDatePicker and I m getting the selected date from it in yyyy-MM-dd format.Now I want to convert it to MM/dd/yyyy format ..How can i do it ?
NSDateFormatter *df=[[[NSDateFormatter alloc]init] autorelease];
df.dateFormat = #"yyyy-MM-dd";
NSArray *temp=[[NSString stringWithFormat:#"%#",[df stringFromDate:DatePicker.date]] componentsSeparatedByString:#""];
[dateString2 release];
dateString2=nil;
dateString2= [[NSString alloc]initWithString:[temp objectAtIndex:0]];
NSLog(#"%#",dateString2);
Im getting 2012-10-30 but I want 10/30/2012.
See Instruction or introduction with every line
NSString *str = #"2012-10-30"; /// here this is your date with format yyyy-MM-dd
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; // here we create NSDateFormatter object for change the Format of date..
[dateFormatter setDateFormat:#"yyyy-MM-dd"]; //// here set format of date which is in your output date (means above str with format)
NSDate *date = [dateFormatter dateFromString: str]; // here you can fetch date from string with define format
dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"dd/MM/yyyy"];// here set format which you want...
NSString *convertedString = [dateFormatter stringFromDate:date]; //here convert date in NSString
NSLog(#"Converted String : %#",convertedString);
df.dateFormat = #"MM/dd/yyyy";
NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat:#"MM/dd/yyyy"];
Just to see how it ends up:
NSDateFormatter* df = [[[NSDateFormatter alloc]init] autorelease];
df.dateFormat = #"MM/dd/yyyy";
NSString* dateString = [df stringFromDate:datePicker.date]; // Don't use leading caps on variables
NSLog(#"%#", dateString);
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MM/dd/yyyy"];
The original accepted answer does a few things extra:
1) It allocates two NSDateFormatter instances which is not required. NSDateFormatter is expensive to create.
2) It is better to release date formatters explicitly when you are done with them rather than a deferred release using autorelease.
//get datepicker date (NSDate *)
NSDate *datePickerDate = [myDatePicker date];
//create a date formatter
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
//set its format as the required output format
[formatter setDateFormat:#"MM/dd/yyyy"];
//get the output date as string
NSString *outputDateString = [formatter stringFromDate:datePickerDate];
//release formatter
[formatter release];
- (void)showTime {
NSDate *now = [NSDate date];
NSDateFormatter *dateFormatter = [NSDateFormatter new];
[dateFormatter setDateFormat:#"HH:mm:ss"];
// you label
_time.text = [dateFormatter stringFromDate:now];
}
- (void)showDate {
NSDate *now = [NSDate date];
NSDateFormatter *dateFormatter = [NSDateFormatter new];
[dateFormatter setDateFormat:#"MM/dd/yyyy"];
// you label
_date.text = [dateFormatter stringFromDate:now];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.showTime;
self.showDate;
}
Enjoy
NSString *str = #"2012-10-30"; /// here this is your date with format yyyy-MM-dd
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; // here we create NSDateFormatter object for change the Format of date..
[dateFormatter setDateFormat:#"yyyy-MM-dd"]; //// here set format of date which is in your output date (means above str with format)
NSDate *date = [dateFormatter dateFromString: str]; // here you can fetch date from string with define format
dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"dd/MM/yyyy"];// here set format which you want...
NSString *convertedString = [dateFormatter stringFromDate:date]; here convert date in NSString
NSLog(#"Converted String : %#",convertedString);
I use a code with options NSISO8601DateFormatWithDashSeparatorInDate:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
NSString * stringformat = [NSDateFormatter dateFormatFromTemplate:#"MMddy" options:NSISO8601DateFormatWithDashSeparatorInDate locale:[NSLocale systemLocale]];
[dateFormatter setDateFormat:stringformat];
NSDate *d = [NSDate date]; // or set your date
NSLog(#"date in format %#", [dateFormatter stringFromDate:d]); // date in format 2018-06-20
I want to see what is getting stored in an NSDate, so I am using NSLog, but it's showing (null), whereas if I print the string stf2, it's showing the proper value.
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"YYYY-MM-dd"];
NSDateFormatter *formatter1 = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMM dd, yyyy"];
NSString *stf2 = [[pact.date componentsSeparatedByString:#" "] objectAtIndex:0];
NSLog(#"date %#",stf2);
NSDate *date_ = [formatter dateFromString:stf2];
pact.date = [formatter1 stringFromDate:date_];
NSLog(#"date %#",[NSDate date_]);
There are two specific problems in the code you've presented in the question.
Format Reset
First you do,
[formatter setDateFormat:#"YYYY-MM-dd"];
and then you initialize the second formatter followed by resetting the first formatter's format,
NSDateFormatter *formatter1 = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMM dd, yyyy"];
To emphasize
[formatter setDateFormat:#"MMM dd, yyyy"];
This should've been formatter1 but is formatter.
Date Format
If you look at the format you've use YYYY-MM-dd, it looks fine. But apparent YYYY have a different purpose and can be different from our usual calendar year. You should use the lowercase y instead.
[formatter setDateFormat:#"yyyy-MM-dd"];
And I don't think you meant this but
NSLog(#"date %#",[NSDate date_]);
should be
NSLog(#"date %#", date_);
you need to correct the dateformatter by setting proper date formatter. first do this
[formatter setDateFormat:#"yyyy-dd-MM"];
//it should be in the way as your string is. like if your string is 2011-Jun- 27 then fromatter should be
[formatter setDateFormat:#"yyyy-MM-dd"];
set the formatter as per your string's date format. then get the date back from this line
NSDate *date_ = [formatter dateFromString:stf2];
Assuming "stf2" is your string, then perhaps your object formatter is nil.
Below functions will be helpful to you.
"getDateTimeFromString" will take date and time as argument and it will return NSDate object.\
-(NSDate *)getDateTimeFromString :(NSString *)tempDate :(NSString *)tempTime{
NSString *dateValue = [tempDate stringByAppendingFormat:#" %#",tempTime];
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"yyyy-MM-dd HH:mm"];
NSDate *date = [[NSDate alloc] init];
date = [dateFormatter dateFromString:dateValue];
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:#"GMT"];
NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];
NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:date];
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:date];
NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;
NSDate* destinationDate = [[[NSDate alloc] initWithTimeInterval:interval sinceDate:date] autorelease];
return date;
}
"getDateStringFromDate" will take NSDate as argument and it will return NSString.
So, you can NSLog that value.
-(NSString *)getDateStringFromDate :(NSDate *)dateValue{
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd"];
NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init];
[timeFormat setTimeStyle:NSDateFormatterShortStyle];
[timeFormat setDateFormat:#"HH:mm a"];
NSString *theDate = [dateFormat stringFromDate:dateValue];
/*NSLog(#"\n"
"theDate: |%#| \n"
"theTime: |%#| \n"
, theDate, theTime);*/
return theDate;
}
Hope you will get the answer.