Converting Nsstring to Nsdate (And Back Again)

Converting NSString to NSDate (and back again)

Swift 4 and later

Updated: 2018

String to Date

var dateString = "02-03-2017"
var dateFormatter = DateFormatter()

// This is important - we set our input date format to match our input string
// if the format doesn't match you'll get nil from your string, so be careful
dateFormatter.dateFormat = "dd-MM-yyyy"

//`date(from:)` returns an optional so make sure you unwrap when using. 
var dateFromString: Date? = dateFormatter.date(from: dateString)

Date to String

var formatter = DateFormatter()
formatter.dateFormat = "dd-MM-yyyy"
guard let unwrappedDate = dateFromString else { return }

//Using the dateFromString variable from before. 
let stringDate: String = formatter.string(from: dateFromString)

Swift 3

Updated: 20th July 2017

String to NSDate

var dateString = "02-03-2017"
var dateFormatter = DateFormatter()
// This is important - we set our input date format to match our input string
// if the format doesn't match you'll get nil from your string, so be careful
dateFormatter.dateFormat = "dd-MM-yyyy"
var dateFromString = dateFormatter.date(from: dateString)

NSDate to String

var formatter = DateFormatter()
formatter.dateFormat = "dd-MM-yyyy"
let stringDate: String = formatter.string(from: dateFromString)

---

Swift

Updated: 22nd October 2015

String to NSDate

var dateString = "01-02-2010"
var dateFormatter = NSDateFormatter()
// this is imporant - we set our input date format to match our input string
dateFormatter.dateFormat = "dd-MM-yyyy"
// voila!
var dateFromString = dateFormatter.dateFromString(dateString)

NSDate to String

var formatter = NSDateFormatter()
formatter.dateFormat = "dd-MM-yyyy"
let stringDate: String = formatter.stringFromDate(NSDate())
println(stringDate)

---

Objective-C

NSString to NSDate

NSString *dateString = @"01-02-2010";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd-MM-yyyy"];
NSDate *dateFromString = [dateFormatter dateFromString:dateString];

NSDate convert to NSString:

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd-MM-yyyy"];
NSString *stringDate = [dateFormatter stringFromDate:[NSDate date]];
NSLog(@"%@", stringDate);

Conversion from NSString to NSDate and back again

Change it to,

NSString *RSSDate1 = @"Fri, 23 Nov 2012 15:39:00 -0800";
NSDateFormatter *RSSDateFormatter = [[NSDateFormatter alloc] init];
[RSSDateFormatter setDateFormat:@"EEE, dd MMM yyyy HH:mm:ss zzzzz"];

NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [RSSDateFormatter dateFromString:RSSDate1];
NSLog(@"dateFromString = %@", dateFromString);    
[RSSDateFormatter release];

NSDateFormatter *RSSDateFormatter2 = [[NSDateFormatter alloc] init];
[RSSDateFormatter2 setDateFormat:@"MMM dd, yyyy hh:mm aaa"];
NSLog(@"dateToString = %@", [RSSDateFormatter2 stringFromDate:dateFromString]);

UIAlertView *dateAlert = [[UIAlertView alloc] init];
[dateAlert setTitle:[RSSDateFormatter2 stringFromDate:dateFromString]];
[dateAlert addButtonWithTitle:@"Dismiss"];
[dateAlert show];
[dateAlert release];

Output:

dateToString = Nov 23, 2012 03:39 PM

Note that the format for "Fri, 23 Nov 2012 15:39:00 -0800" is "EEE, dd MMM yyyy HH:mm:ss zzzzz" and for "Nov 23, 2012 03:39 PM" it is "MMM dd, yyyy hh:mm aaa". Each letters in the format represents the corresponding word in date string. For eg:- EEE is for Fri, aaa for PM etc.. Check this for more information on how to do this formatting.

Convert NSString to NSDate and back to different format NSString

Convert

[dateFormatter setDateFormat:@"MMM dd, yyyy, hh:mm p"];

to, Because MMM dd, yyyy, hh:mm p not a valid date formate

 [dateFormatter setDateFormat:@"MMM dd, yyyy, hh:mm a"];

And

NSDate *dateFromString = [dateFormatter dateFromString:substring];

To get string again

NSLog(@"%@",[dateFormatter stringFromDate:dateFromString]);

for me NSLog is Dec 04, 2012, 12:33 PM

Convert NSString to NSDate

It's a simple one, converting NSString to NSDate we use NSDateformatter using dateFromString method. We need to provide the Dateformatter style with existing style for NSString

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *date = [dateFormatter dateFromString:@"2013-02-01T06:25:47Z"];
NSTimeZone *pdt = [NSTimeZone timeZoneWithAbbreviation:@"PDT"];
[dateFormatter setTimeZone:pdt];
[dateFormatter setDateFormat:@"HH:mm:ss zzz"];
[dateFormatter setDateFormat:@"K:mm a, z"];
NSString * updated String = [dateFormatter stringFromDate:date];

How to convert NSString to NSDate in IOS?

 -(NSString *)geTimeFromString:(NSString *)string
    {
        NSString * dateString = [NSString stringWithFormat: @"%@",string];
        NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
        [dateFormatter setDateFormat:@"hh:mm:ss"];
        NSDate* myDate = [dateFormatter dateFromString:dateString];
        [dateFormatter setDateFormat:@"hh:mm a"];
        [dateFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"]];
        NSString *stringFromTime = [dateFormatter stringFromDate:myDate];
        return stringFromTime;
    }

Try this

Convert NSString to NSDate is not working

Its because of your current time zone, add this then it will give u correct date

[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"GMT"]];

How to convert NSString to NSDate object

Your code should be like,

NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *myDate = [df dateFromString: @"2012-04-23T14:00:51Z"];
NSLog(@"%@",myDate);

---

Related Topics