Convert date string swift - ios

Question

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.

Answer 1

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)

Answer 2

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

Answer 3

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)