I have such time which I have to send to the server:
2019-03-06T14:49:55+01:00
I thought that I can do it in such way:
NSDate(timeIntervalSince1970: TimeInterval(NSDate().timeIntervalSince1970))
but I got such time:
2021-01-24 15:42:31 +0000
I thought that I have to user decoding pattern, so used such way:
let dateFormatterGet = DateFormatter()
dateFormatterGet.dateFormat = "yyyy-MM-dd HH:mm:ss+z"
let dateFormatterPrint = DateFormatter()
dateFormatterPrint.dateFormat = "MMM dd,yyyy"
let time = NSDate(timeIntervalSince1970: TimeInterval(NSDate().timeIntervalSince1970))
if let date = dateFormatterGet.date(from: time.description) {
print(dateFormatterPrint.string(from: date))
} else {
print("There was an error decoding the string")
}
but its output was:
There was an error decoding the string
what means that I can't decode this time in such way. What I did wrong?
You are creating a string from a date from a time interval from a date, three of the conversions are waste.
The conversion failed because time.description doesn't match the format yyyy-MM-dd HH:mm:ss+z
To get an ISO8601 string with time zone the date format is yyyy-MM-dd'T'HH:mm:ssZ and you have to specify a fixed locale
let formatter = DateFormatter()
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
let isoString = formatter.string(from: Date())
There is a shorter way as suggested by Rob in the comments
let formatter = ISO8601DateFormatter()
formatter.timeZone = .current
let isoString = formatter.string(from: Date())
Related
I have myString "28-OCT-22"
I need to convert it to different format "dd.MM.yyyy"
What I've tried:
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "d-MMM-yy"
let date = dateFormatter.date(from: myString)! //error, I think because OCT is uppercase, NSDateFormatter doesn't have this format?
dateFormatter.dateFormat = "dd.MM.yyyy"
let stringDate = dateFormatter.string(from: date)
and is there more clean way to do this?
Month abbreviations are localized.
Set the locale to the fixed generic value en_US_POSIX which supports OCT
let myString = "28-OCT-22"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "d-MMM-yy"
let date = dateFormatter.date(from: myString)!
dateFormatter.dateFormat = "dd.MM.yyyy"
let stringDate = dateFormatter.string(from: date)
Although the format is correct force unwrapping converted dates is not recommended
I need to date and time with my own format like time in AM/PM (12 hours).
extension Date {
func getStringFromDateWithUTCFormat() -> ObjTimeStamp {
let dateFormatterPrint = DateFormatter()
dateFormatterPrint.timeZone = TimeZone.init(abbreviation: "UTC")
// Get Date
dateFormatterPrint.dateFormat = "MM/dd/yyyy" //"MMM dd,yyyy"
let date = dateFormatterPrint.string(from: self)
// Get Time
dateFormatterPrint.dateFormat = "hh:mm:ss a"
let time = dateFormatterPrint.string(from: self)
return ObjTimeStamp.init(date: date, time: time, timeStamp: self)
}
}
Update
Calling function
self.currentDate = Date()
let objTimeStamp = currentDate.getStringFromDateWithUTCFormat()
Perfect work when device time in 12-hour format when I try to change device time in 24-hour formate then given wrong time format.
set your dateFormatter locale to en-US then try to convert, it's works for me when iPhone's time format is 24 hour:
let date = Date()
let formatter = DateFormatter()
formatter.locale = Locale(identifier: "en-US")
formatter.dateFormat = "hh:mm a"
let time12 = formatter.string(from: date)
print(time12)
output:
01:37 PM
I'm trying to get the current date. Current Date and time is 2019-12-16 05:12:59 but I get 2019-12-16 10:12:59.
let dateAdded = itemDict["time"] as! String
let df = DateFormatter()
df.dateFormat = "yyyy-MM-dd hh:mm:ss"
let currentTime = df.date(from: dateAdded)
let dateTime = currentTime!.addingTimeInterval(60.0 * 60.0)
let currentDate = Date()
Try this:
Date().toCurrentTimezone()
extension Date {
func toCurrentTimezone() -> Date {
let timeZoneDifference =
TimeInterval(TimeZone.current.secondsFromGMT())
return self.addingTimeInterval(timeZoneDifference)
}
}
To get the current time without a format you can simply just add this:
let currentDateTime = Date()
print(currentDateTime)
But if you would like to retrieve a "string" and convert it into a date you can do:
let dateAdded = itemDict["time"] as! String
//Convert string to date
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
let date = dateFormatter.date(from: dateAdded!)
If you're still getting wrong time, you should add timezone. In that case the code will be something like this:
let dateAdded = itemDict["time"] as! String
//Convert string to date
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
let date = dateFormatter.date(from: dateAdded!)
If you're using uppercase "HH" that means you're using the 24h clock. Otherwise use small case "hh".
You need to set your local time zone in date formator.
//Get local time Zone
var localTimeZoneIdentifier: String { return TimeZone.current.identifier }
print("local Time zone: " + localTimeZoneIdentifier)
let inputdateString: String = "2019-12-16 05:12:59"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: localTimeZoneIdentifier)
dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
let inputDate = dateFormatter.date(from: inputdateString )!
print("Output date: \(String(describing: inputDate))")
out put:-
local Time zone:-Asia/Kolkata
Output date: 2019-12-15 23:42:59 +0000
I have a date "2017-12-31" as a String.
What I want to get finally is only the month: "12" as a String.
So I thought that I can change it to Date using a date formatter
let formatter = DateFormatter()
formatter.dateFormat = "MM"
What do I do next?
let dateString = "2017-12-31"
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: Calendar.Identifier.iso8601) formatter.timeZone = TimeZone(identifier: TimeZone.autoupdatingCurrent.identifier)
formatter.dateFormat = "yyyy-MM-dd"
let localDate = formatter.date(from: dateString)
formatter.dateFormat = "MM"
let strMonth = formatter.string(from: localDate!)
print("Month is:",strMonth)
Another way
let dateString = "2017-12-31"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
let localDate = formatter.date(from: dateString)
let month = String(NSCalendar.current.component(.month, from: localDate!))
print(month)
First you have to use the DateFormatter to create a temporary Date object from your source String object. Then you have to use it to create your final String from the temporary Date object.
let dateString = "2017-12-31"
let dateFormatter = DateFormatter()
// set the dateFormatter's dateFormat to the dateString's format
dateFormatter.dateFormat = "yyyy-MM-dd"
// create date object
guard let tempDate = dateFormatter.date(from: dateString) else {
fatalError("wrong dateFormat")
}
// set the dateFormatter's dateFormat to the output format you wish to receive
dateFormatter.dateFormat = "LL" // LL is the stand-alone month
let month = dateFormatter.string(from: tempDate)
Use below function for getting month from string file of date
func getMonthFromDateString(strDate: String) -> String {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
let date = formatter.date(from: strDate) // Convert String File To Date
formatter.dateFormat = "MM"
let strMM = formatter.string(from: date!) // Convert date to string
return strMM
}
I'm getting UTC string dates that look like this "2015-10-17T00:00:00.000Z" and want to convert them to an NSDate in this format "October 12th 2015 11:19:12 am"
This is the route that I'm trying but I can't seem to get the right dateFormat.
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = //can't seem to get this right
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let date = dateFormatter.dateFromString("2015-10-17T00:00:00.000Z")
I think this should work
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let localDate = formatter.date(from: date)
This works for Swift 3.0 and latest Xcode [April 2017]
let dateString = "2017-Jan-01 12:00:00.250"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-M-dd HH:mm:ss.SSS"
dateFormatter.locale = Locale.init(identifier: "en_GB")
let dateObj = dateFormatter.date(from: dateString)
let date = dateObj
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 HH:mm:ss.SSSXXXXX"
let currentDateTime = formatter.string(from: date!)
Swift 4 code
let dateString = "2015-10-17T00:00:00.000Z"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = formatter.date(from: dateString)
You can find useful info about date formats here
This question is a few years old but let's answer it literally.
First of all DateFormatter doesn't provide a format specifier for an ordinal suffix so we have to write a function
func ordinalSuffix(for day : String) -> String {
switch day {
case "1", "11", "21", "31": return "st"
case "2", "12", "22": return "nd"
case "3", "13", "23": return "rd"
default: return "th"
}
}
To convert the iso8601 string to date create a DateFormatter, set its calendar to an iso8601 calendar and convert the string to Date. As the time zone is specified in the string you don't need to set it explicitly
let dateString = "2015-10-17T00:00:00.000Z"
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
guard let date = formatter.date(from: dateString) else {
// replace that with a proper error handling
fatalError("Could not convert date string")
}
To convert the date back to string you have to set the Locale to a fixed value, set the am/pm symbols to the lowercase versions, extract the day component first for the ordinal suffix calculation and then take advantage of String(format to insert the ordinal suffix.
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.amSymbol = "am"
formatter.pmSymbol = "pm"
formatter.dateFormat = "dd"
let day = formatter.string(from: date)
formatter.dateFormat = "MMMM dd'%#' yyyy h:mm:ss a"
let output = String(format: formatter.string(from: date), ordinalSuffix(for: day))
print(output)