I get the following date back from an API.
{
"createdDate": "2019-03-22T15:53:06.663Z"
}
I'd like to decode this and store it as a Date type.
My JSONDecoder is not able to decode this however.
I have tried to extend it with
extension DateFormatter {
static let iso8601Full: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
formatter.calendar = Calendar(identifier: .iso8601)
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.locale = Locale(identifier: "en_US_POSIX")
return formatter
}()
}
and then using decoder.dateDecodingStrategy = .formatted(DateFormatter.iso8601Full) but this does not work
Use ISO8601DateFormatter with formatting options
let str = "2019-03-22T15:53:06.663Z"
let formatter = ISO8601DateFormatter()
formatter.formatOptions = [.withFullDate, .withFullTime, .withTimeZone, .withFractionalSeconds]
let date = formatter.date(from: str)
Related
Hi I want to convert Date() into string by following this format exactly 2020-07-29T05:27:04.000Z.
Tried1:
let dateFormatter = DateFormatter()
dateFormatter.calendar = Calendar(identifier: .iso8601)
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
let string = dateFormatter.string(from: Date())
print("String: \(string)")
Output 1: 2020-08-06T10:14:25.890Z
Tried2:
let formatter = ISO8601DateFormatter()
formatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
let string = formatter.string(from: Date())
print("String: \(string)")
Output2: 2020-08-06T10:17:33.508Z
But I want to get string that exactly matches to 2020-07-29T05:27:04.000Z this format. Please help me to find out. Thanks in advance.
Just replace SSS with 000
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.000XXXXX"
This is a piece of code that was working in earlier version of swift. It is now giving an error (Cannot convert value of type 'NSDate' to type 'NSDate.Date' in coercion)
extension NSDate {
struct Date {
static let formatterISO8601: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.ISO8601)! as Calendar
formatter.locale = NSLocale.current
formatter.timeZone = NSTimeZone(forSecondsFromGMT: 0) as TimeZone!
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssXXX"
return formatter
}()
}
var formattedISO8601: String { return Date.formatterISO8601.string(from: self as Date) }
}
Issue is that in Swift 3 there is already a structure define with named Date.
So what you can do is change your struct name to MyDate or something else and you all set to go.
Also it is better if you use new Date, Calendar and TimeZone instead of NSDate, NSCalendar and NSTimeZone.
Or make extension of Date like this way.
extension Date {
static let formatterISO8601: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.locale = Locale.current
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssXXX"
return formatter
}()
var formattedISO8601: String { return Date.formatterISO8601.string(from: self) }
}
Extensions for both NSDate and Date.
extension Date {
static let formatterISO8601: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.ISO8601)! as Calendar
formatter.locale = NSLocale.current
formatter.timeZone = NSTimeZone(forSecondsFromGMT: 0) as TimeZone!
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssXXX"
return formatter
}()
func formattedISO8601() -> String {
return Date.formatterISO8601.string(from: self)
}
}
extension NSDate {
func formattedISO8601() -> String {
return Date.formatterISO8601.string(from: self as Date)
}
}
And use it like this ...
// NSDate
let nsdate = NSDate.init()
let formattedDate = nsdate.formattedISO8601()
// Date
let date = Date.init()
let formattedNsDate = date.formattedISO8601()
try this
extension Date {
static let formatterISO8601: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.ISO8601)! as Calendar
formatter.locale = NSLocale.current
formatter.timeZone = NSTimeZone(forSecondsFromGMT: 0) as TimeZone!
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssXXX"
return formatter
}()
var formattedISO8601: String { return Date.formatterISO8601.string(from: self)
}
}
let dateFormatter = DateFormatter()
let dateFormatter2 = DateFormatter()
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
let date = dateFormatter.date(from: event!)
dateFormatter2.timeZone = TimeZone.current
let dateString = dateFormatter2.string(from: date!)
let finalDate = dateFormatter2.date(from: dateString)
return finalDate!
I have sports events that give me string dates in UTC which I am trying to convert into local time. This code is similar to the dozens of examples given in this site when asked this question, yet it doesn't work.
This is the iso8601 formatter :
static let iso8601: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
return formatter
}()
This turns your string into a Date.
You will need to add the time difference, most likely through TimeZone.autoupdatingCurrent
This question already has answers here:
Convert NSDate to NSString
(19 answers)
Closed 5 years ago.
I am trying to convert a NSDate to a String and then Change Format. But when I pass NSDate to String it is producing whitespace.
let formatter = DateFormatter()
let myString = (String(describing: date))
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let yourDate: Date? = formatter.date(from: myString)
formatter.dateFormat = "dd-MMM-yyyy"
print(yourDate)
you get the detail information from Apple Dateformatter Document.If you want to set the dateformat for your dateString, see this link , the detail dateformat you can get here
for e.g , do like
let formatter = DateFormatter()
// initially set the format based on your datepicker date / server String
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let myString = formatter.string(from: Date()) // string purpose I add here
// convert your string to date
let yourDate = formatter.date(from: myString)
//then again set the date format whhich type of output you need
formatter.dateFormat = "dd-MMM-yyyy"
// again convert your date to string
let myStringDate = formatter.string(from: yourDate!)
print(myStringDate)
you get the output as
I always use this code while converting Date to String . (Swift 3)
extension Date
{
func toString( dateFormat format : String ) -> String
{
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = format
return dateFormatter.string(from: self)
}
}
and call like this . .
let today = Date()
today.toString(dateFormat: "dd-MM")
DateFormatter has some factory date styles for those too lazy to tinker with formatting strings. If you don't need a custom style, here's another option:
extension Date {
func asString(style: DateFormatter.Style) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = style
return dateFormatter.string(from: self)
}
}
This gives you the following styles:
short, medium, long, full
Example usage:
let myDate = Date()
myDate.asString(style: .full) // Wednesday, January 10, 2018
myDate.asString(style: .long) // January 10, 2018
myDate.asString(style: .medium) // Jan 10, 2018
myDate.asString(style: .short) // 1/10/18
Your updated code.update it.
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let myString = formatter.string(from: date as Date)
let yourDate: Date? = formatter.date(from: myString)
formatter.dateFormat = "dd-MMM-yyyy"
print(yourDate!)
Something to keep in mind when creating formatters is to try to reuse the same instance if you can, as formatters are fairly computationally expensive to create. The following is a pattern I frequently use for apps where I can share the same formatter app-wide, adapted from NSHipster.
extension DateFormatter {
static var sharedDateFormatter: DateFormatter = {
let dateFormatter = DateFormatter()
// Add your formatter configuration here
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
return dateFormatter
}()
}
Usage:
let dateString = DateFormatter.sharedDateFormatter.string(from: Date())
After allocating DateFormatter you need to give the formatted string
then you can convert as string like this way
var date = Date()
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let myString = formatter.string(from: date)
let yourDate: Date? = formatter.date(from: myString)
formatter.dateFormat = "dd-MMM-yyyy"
let updatedString = formatter.string(from: yourDate!)
print(updatedString)
OutPut
01-Mar-2017
You can use this extension:
extension Date {
func toString(withFormat format: String) -> String {
let formatter = DateFormatter()
formatter.dateFormat = format
let myString = formatter.string(from: self)
let yourDate = formatter.date(from: myString)
formatter.dateFormat = format
return formatter.string(from: yourDate!)
}
}
And use it in your view controller like this (replace <"yyyy"> with your format):
yourString = yourDate.toString(withFormat: "yyyy")
I have a date string in this format:
2016-06-20T13:01:46.457+02:00
and I need to change it to something like this:
20/06/2016
Previously I have always used this library -> SwiftDate to manipulate the dates, but it doesn't work now.
I tried also something like:
let myDate = self.dateNoteDict[indexPath.row]!
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss.SSSSxxx"
let date = dateFormatter.dateFromString(myDate)
print("date -> \(date)")
but it doesn't work. How can I do?
Thanks in advance.
The standard ISO8601 date format with fractional seconds and time zone is
yyyy-MM-dd'T'HH:mm:ss.SSSZ
let myDate = "2016-06-20T13:01:46.457+02:00"
let dateFormatter = NSDateFormatter()
dateFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") // edited
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.dateFromString(myDate)!
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.stringFromDate(date)
Swift 3:
let myDate = "2016-06-20T13:01:46.457+02:00"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX") // edited
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.date(from:myDate)!
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)
In macOS 10.13+, iOS 11+ ISO8601DateFormatter is an alternative as input formatter
let myDate = "2016-06-20T13:01:46.457+02:00"
let inputFormatter = ISO8601DateFormatter()
inputFormatter.formatOptions = [.withFullDate, .withFullTime, .withFractionalSeconds]
let date = dateFormatter.date(from:myDate)!
let outputFormatter = DateFormatter()
outputFormatter.locale = Locale(identifier: "en_US_POSIX")
outputFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)
I always use this code while converting String to Date .
(Swift 3)
extension String
{
func toDate( dateFormat format : String) -> Date
{
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = format
if let date = dateFormatter.date(from: self)
{
return date
}
print("Invalid arguments ! Returning Current Date . ")
return Date()
}
}
and just call like . .
print ( "2016-06-20T13:01:46.457+02:00".toDate(dateFormat: "yyyy-MM-dd'T'HH:mm:ss.SSSZ") )
//Capital HH for 24-Hour Time
I always use this code while converting String to Date. (Swift 4.2)
let myDate = datePicker.date
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = myDate
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)
print(dateString)
You can try manually also:
let myDate = "2019-02-22T08:21:11+0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = myDate
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)
print(dateString)