NSString *releaseTime = #"2015-10-30 16:00:00";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"yyyy-MM-dd hh:mm:ss";
NSDate *releaseDate = [dateFormatter dateFromString:releaseTime];
When i try to access this releaseDate it is showing nil.
Change the format from yyyy-MM-dd hh:mm:ss to yyyy-MM-dd HH:mm:ss and it should work.
If you wonder why, hh is for am/pm hour format, while HH is for 24 hour format. Since you have 16:00:00 it's 24h format and the date formatter can't parse it and returns nil.
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 return a string from my database and value is '04/27/2016 1:16pm'. This value is already in UTC.
Now I want to convert that string to NSDATE, keeping it in UTC. When I try to convert string to date, the time is actually moving by 1 hour.
This is how I am doing it
NSString *tuploadtime = [tempDictionary valueForKey:#"uploadTime"];
//date conversions
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"MM-dd-yyyy HH:mm:ss a"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"UTC"]];
NSDate *duploadtime = [[NSDate alloc] init];
duploadtime = [dateFormatter dateFromString:tuploadtime];
NSLog(#"tuploadtime=%#, duploadtime=%#", tuploadtime, duploadtime);
the result is coming back as 2016-04-27 12:16:01 UTC.
result is
2016-04-27 10:12:44.612 x[1558:48608] tuploadtime=4/27/2016 2:10:33 PM, duploadtime=2016-04-27 12:10:33 +0000
basically the time is moving back 1 hour but I want to keep it the same.
hope I am making sense
Proper String Format for Date is most Important.
There are some methods to have HOURS format as follow with their differences..
kk: will return 24 format Hour in (01-24) hours will (look like 01, 02..24).
HH will return 24 format Hour in (00-23) hours will(look like 00, 01..23).
hh will return 12 format Hour (look like 01, 02..12).
so you should use your code like
NSString *tuploadtime = [tempDictionary valueForKey:#"uploadTime"];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"MM-dd-yyyy hh:mm:ss a"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"UTC"]];
NSDate *duploadtime = [[NSDate alloc] init];
duploadtime = [dateFormatter dateFromString:tuploadtime];
NSLog(#"tuploadtime=%#, duploadtime=%#", tuploadtime, duploadtime);
for More Date format refer this link
Your date format string is inconsistent:
[dateFormatter setDateFormat:#"MM-dd-yyyy HH:mm:ss a"];
HH means to use a 24-hour format. But then you also used a to indicate AM/PM. Using both is confusing the formatter and giving you off-by-one. You meant to use hh here.
I need to convert the following date to epoch timestamp
Wed, 21 May 2014 16:47:00 BST
stringPubDate has the above string stored in it.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE, d MMMM yyyy HH:mm:ss z"];
NSDate *date = [dateFormatter dateFromString:stringPubDate];
Null is being returned when I do this. I need to convert this NSString to NSDate and then convert it into epoch timestamp. Can someone please help me?
The problem is that the date format you are giving does not match the format of the date in the string.
I wrote a code block
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:#"en_US"];
[dateFormatter setDateFormat:#"YYYY-MM-dd"];
NSLog(#"date:%#,string:%#", aDate,[dateFormatter stringFromDate:aDate]);
it works well for most date, but if the date is 2013-12-30 it works strange .
the Log string is date:2013-12-30 16:00:00 +0000,string:2014-12-31
Why? why the date 2013-12-30 convert to string is 2014-12-31?
The NSDate you're giving it is 4pm in GMT. You're probably not in GMT, so it's formatting that time/date for your current timezone, where it's at least eight hours later.
Create your NSDate with the local timezone, or use NSDateComponents if you really want just a date with no time.
My dateFromString is not working and i'm not sure why
NSString *purchase = #"2011-09-30 17:47:57";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd hh:mm:ss"];
NSDate *date = [dateFormat dateFromString:purchase];
date is 'invalid CFStringRef'
See anything i might be overlooking?
Try changing the hours in the formatter to capitals, i.e. yyyy-MM-dd HH:mm:ss
I'm not sure if that will solve your error, but that is the correct way to parse a 24 hour time
in the format
"hh" means Hour [1-12].
"HH" means Hour [0-23].
See UTS Date Field Symbol Table for the date format specifiers.
Try this:
NSString *purchase = #"2011-09-30 17:47:57";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSDate *date = [dateFormat dateFromString:purchase];
Date Formatters Guide - HH is used for 24 hour times, hh for 12 hour.
If you mean that "date" is not accepted as an NSString by another function, that's because it's not a string, it's an NSDate.
(Where, precisely, are you getting the error message, and what is the full text?)