Reputation: 4274
I want to convert the string "2014-07-15 06:55:14.198000+00:00"
to an NSDate
in Swift.
Upvotes: 196
Views: 206258
Reputation: 11364
ability to get from string with months/days written by text ( "September", "Monday", "Mon" ect ) Other answers in most cases does not
Other answers does not
extension Date {
static func fromString(strDate: String, _ template: String,
locale: Locale = Locale(identifier: "en_US"),
timeZoneFix: TimeZone? = TimeZone(abbreviation: "GMT+0:00") ) -> Date?
{
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = template
dateFormatter.locale = locale
dateFormatter.timeZone = timeZoneFix
return dateFormatter.date(from: strDate)
}
}
Upvotes: 0
Reputation: 6092
try this:
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = /* find out and place date format from
* http://userguide.icu-project.org/formatparse/datetime
*/
let date = dateFormatter.dateFromString(/* your_date_string */)
For further query, check NSDateFormatter and DateFormatter classes of Foundation framework for Objective-C and Swift, respectively.
Swift 3 and later
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = /* date_format_you_want_in_string from
* http://userguide.icu-project.org/formatparse/datetime
*/
guard let date = dateFormatter.date(from: /* your_date_string */) else {
fatalError("ERROR: Date conversion failed due to mismatched format.")
}
// use date constant here
Edit:
Alternative date time format reference https://unicode-org.github.io/icu/userguide/format_parse/datetime/
Upvotes: 342
Reputation: 4945
SWIFT 5, Xcode 11.0
Pass your (date in string) in "dateString" and in "dateFormat" pass format you want. To choose format, use NDateFormatter website.
func getDateFrom(dateString: String, dateFormat: String) -> Date? {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = dateFormat
dateFormatter.locale = Locale(identifier: "en_US")
guard let date = dateFormatter.date(from: dateString) else {return nil}
return date
}
Upvotes: 1
Reputation: 25304
import Foundation
extension DateFormatter {
convenience init (format: String) {
self.init()
dateFormat = format
locale = Locale.current
}
}
extension String {
func toDate (dateFormatter: DateFormatter) -> Date? {
return dateFormatter.date(from: self)
}
func toDateString (dateFormatter: DateFormatter, outputFormat: String) -> String? {
guard let date = toDate(dateFormatter: dateFormatter) else { return nil }
return DateFormatter(format: outputFormat).string(from: date)
}
}
extension Date {
func toString (dateFormatter: DateFormatter) -> String? {
return dateFormatter.string(from: self)
}
}
var dateString = "14.01.2017T14:54:00"
let dateFormatter = DateFormatter(format: "dd.MM.yyyy'T'HH:mm:ss")
let date = Date()
print("original String with date: \(dateString)")
print("date String() to Date(): \(dateString.toDate(dateFormatter: dateFormatter)!)")
print("date String() to formated date String(): \(dateString.toDateString(dateFormatter: dateFormatter, outputFormat: "dd MMMM")!)")
let dateFormatter2 = DateFormatter(format: "dd MMM HH:mm")
print("format Date(): \(date.toString(dateFormatter: dateFormatter2)!)")
Upvotes: 20
Reputation: 1372
You can try this swift code
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"//same as strDate date formator
dateFormatter.timeZone = TimeZone(abbreviation: "GMT+0:00")//Must used if you get one day less in conversion
let convertedDateObject = dateFormatter.date(from: strDate)
Upvotes: 2
Reputation: 911
Below are some string to date format converting options can be usedin swift iOS.
Thursday, Dec 27, 2018
format= EEEE, MMM d, yyyy
12/27/2018
format= MM/dd/yyyy
12-27-2018 09:59
format= MM-dd-yyyy HH:mm
Dec 27, 9:59 AM
format= MMM d, h:mm a
December 2018
format= MMMM yyyy
Dec 27, 2018
format= MMM d, yyyy
Thu, 27 Dec 2018 09:59:19 +0000
format= E, d MMM yyyy HH:mm:ss Z
2018-12-27T09:59:19+0000
format= yyyy-MM-dd'T'HH:mm:ssZ
27.12.18
format= dd.MM.yy
09:59:19.815
format= HH:mm:ss.SSS
Upvotes: 2
Reputation: 2157
Swift 4
import Foundation
let dateString = "2014-07-15" // change to your date format
var dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
let date = dateFormatter.date(from: dateString)
println(date)
Swift 3
import Foundation
var dateString = "2014-07-15" // change to your date format
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
var date = dateFormatter.dateFromString(dateString)
println(date)
I can do it with this code.
Upvotes: 73
Reputation: 624
This work for me..
import Foundation
import UIKit
//dateString = "01/07/2017"
private func parseDate(_ dateStr: String) -> String {
let simpleDateFormat = DateFormatter()
simpleDateFormat.dateFormat = "dd/MM/yyyy" //format our date String
let dateFormat = DateFormatter()
dateFormat.dateFormat = "dd 'de' MMMM 'de' yyyy" //format return
let date = simpleDateFormat.date(from: dateStr)
return dateFormat.string(from: date!)
}
Upvotes: 2
Reputation: 12383
Swift 3,4:
2 useful conversions:
string(from: Date) // to convert from Date to a String
date(from: String) // to convert from String to Date
Usage: 1.
let date = Date() //gives today's date
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd.MM.yyyy"
let todaysDateInUKFormat = dateFormatter.string(from: date)
2.
let someDateInString = "23.06.2017"
var getDateFromString = dateFormatter.date(from: someDateInString)
Upvotes: 4
Reputation: 2117
func convertDateFormatter(date: String) -> String
{
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"//this your string date format
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let date = dateFormatter.dateFromString(date)
dateFormatter.dateFormat = "yyyy MMM EEEE HH:mm"///this is what you want to convert format
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let timeStamp = dateFormatter.stringFromDate(date!)
return timeStamp
}
Updated for Swift 3.
func convertDateFormatter(date: String) -> String
{
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"//this your string date format
dateFormatter.timeZone = NSTimeZone(name: "UTC") as TimeZone!
let date = dateFormatter.date(from: date)
dateFormatter.dateFormat = "yyyy MMM EEEE HH:mm"///this is what you want to convert format
dateFormatter.timeZone = NSTimeZone(name: "UTC") as TimeZone!
let timeStamp = dateFormatter.string(from: date!)
return timeStamp
}
Upvotes: 56
Reputation: 1216
FOR SWIFT 3.1
func convertDateStringToDate(longDate: String) -> String{
/* INPUT: longDate = "2017-01-27T05:00:00.000Z"
* OUTPUT: "1/26/17"
* date_format_you_want_in_string from
* http://userguide.icu-project.org/formatparse/datetime
*/
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.date(from: longDate)
if date != nil {
let formatter = DateFormatter()
formatter.dateStyle = .short
let dateShort = formatter.string(from: date!)
return dateShort
} else {
return longDate
}
}
NOTE: THIS WILL RETURN THE ORIGINAL STRING IF ERROR
Upvotes: 3
Reputation: 12206
The first thing Apple mentions is that you cache your formatter...
Link to Apple doco stating exactly how to do this:
Cache Formatters for Efficiency Creating a date formatter is not a cheap operation. ...cache a single instance...
Use a global...
let df : DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
return formatter
}()
Then simply use that formatter anywhere...
let s = df.string(from: someDate)
or
let d = df.date(from: someString)
Or use any of the other many, many convenient methods on DateFormatter.
(If you write an extension on String, your code is completely "upside down" - you can't use any dateFormatter calls!)
Note that usually you will have a few of those globals .. such as "formatForClient" "formatForPubNub" "formatForDisplayOnInvoiceScreen" .. etc.
Upvotes: 6
Reputation: 616
For Swift 3
func stringToDate(_ str: String)->Date{
let formatter = DateFormatter()
formatter.dateFormat="yyyy-MM-dd hh:mm:ss Z"
return formatter.date(from: str)!
}
func dateToString(_ str: Date)->String{
var dateFormatter = DateFormatter()
dateFormatter.timeStyle=DateFormatter.Style.short
return dateFormatter.string(from: str)
}
Upvotes: 8
Reputation: 2916
Since Swift 3, many of the NS prefixes have been dropped.
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
/* date format string rules
* http://userguide.icu-project.org/formatparse/datetime
*/
let date = dateFormatter.date(from: dateString)
Upvotes: 4
Reputation: 396
Swift support extensions, with extension you can add a new functionality to an existing class
, structure
, enumeration
, or protocol
type.
You can add a new init
function to NSDate
object by extenging the object using the extension
keyword.
extension NSDate
{
convenience
init(dateString:String) {
let dateStringFormatter = NSDateFormatter()
dateStringFormatter.dateFormat = "yyyyMMdd"
dateStringFormatter.locale = NSLocale(localeIdentifier: "fr_CH_POSIX")
let d = dateStringFormatter.dateFromString(dateString)!
self.init(timeInterval:0, sinceDate:d)
}
}
Now you can init a NSDate object using:
let myDateObject = NSDate(dateString:"2010-12-15 06:00:00")
Upvotes: 4
Reputation: 1745
To add String within Date Format in Swift, I did this
var dataFormatter:NSDateFormatter = NSDateFormatter()
dataFormatter.dateFormat = "dd-MMMM 'at' HH:mm a"
cell.timeStamplbl.text = dataFormatter.stringFromDate(object.createdAt)
Upvotes: 2
Reputation: 2912
If you're going to need to parse the string into a date often, you may want to move the functionality into an extension. I created a sharedCode.swift file and put my extensions there:
extension String
{
func toDateTime() -> NSDate
{
//Create Date Formatter
let dateFormatter = NSDateFormatter()
//Specify Format of String to Parse
dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss.SSSSxxx"
//Parse into NSDate
let dateFromString : NSDate = dateFormatter.dateFromString(self)!
//Return Parsed Date
return dateFromString
}
}
Then if you want to convert your string into a NSDate you can just write something like:
var myDate = myDateString.toDateTime()
Upvotes: 15
Reputation: 7862
Swift: iOS
if we have string, convert it to NSDate,
var dataString = profileValue["dob"] as String
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
// convert string into date
let dateValue:NSDate? = dateFormatter.dateFromString(dataString)
if you have and date picker parse date like this
// to avoid any nil value
if let isDate = dateValue {
self.datePicker.date = isDate
}
Upvotes: 0
Reputation: 19
import Foundation
let now : String = "2014-07-16 03:03:34 PDT"
var date : NSDate
var dateFormatter : NSDateFormatter
date = dateFormatter.dateFromString(now)
date // $R6: __NSDate = 2014-07-16 03:03:34 PDT
Upvotes: -3