i am trying to change the weeks day symbols in swift
with the code below
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEE d MMM"
dateFormatter.weekdaySymbols = ["Måndag", "Tisdag", "Onsdag", "Torsdag", "Fredag", "Lördag", "Söndag"]
let dateString = dateFormatter.string(from: Date())
print(dateString)
And i am getting this wrong day blow
Tisdag 9 Jul
but today is Monday
Instead of managing weekday names yourself, you could use DateFormatter's template api.
let dateFormatter = DateFormatter()
dateFormatter.setLocalizedDateFormatFromTemplate("dEEEEMMM")
let dateString = dateFormatter.string(from: Date()).capitalized(with: locale)
print(dateString)
This should use the phone's locale, which should be what user wants most times.
But you can also set the locale manually.
If you add
let locale = Locale(identifier: "sv_SE")
dateFormatter.locale = locale
it will print
Måndag 9 Juli
if you use
let locale = Locale(identifier: "de_DE")
it prints
Montag, 9. Juli
weekdaySymbols start with sunday, not with monday. You need to change this:
dateFormatter.weekdaySymbols = ["Söndag", "Måndag", "Tisdag", "Onsdag", "Torsdag", "Fredag", "Lördag"]
Related
This question already has answers here:
How can I parse / create a date time stamp formatted with fractional seconds UTC timezone (ISO 8601, RFC 3339) in Swift?
(13 answers)
Closed 3 years ago.
I am converting current date into GMT/UTC date string. But every time it returns me with wrong date.
My todays date is 07 February 2020, 11:09:20 AM. You can refer below image.
Here is my code :
let apiFormatter = DateFormatter()
//apiFormatter.dateStyle = DateFormatter.Style.long
//apiFormatter.timeStyle = DateFormatter.Style.long
//apiFormatter.calendar = Calendar.current
apiFormatter.timeZone = TimeZone.init(identifier: "GMT") //TimeZone(abbreviation: "UTC") //TimeZone.current //
//apiFormatter.locale = Locale.current
//apiFormatter.dateFormat = "yyyy-MM-DD HH:mm:ss"
apiFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
//apiFormatter.dateFormat = "yyyy-MM-dd'T'hh:mm:ssZ"
let endDate = apiFormatter.string(from: Date())
print(endDate)
And what I am getting in return is also you can check in image - 2020-02-38T05:33:34.598Z. I have tried with all the format, but no any luck. Can anyone suggest where it is going wrong?
First of all, the format should be:
apiFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
The Z is not a literal letter, it's the description of the time zone. However, making it a literal won't probably make a problem.
The 38 for day from your output is obviously caused by the DD format you have commented out.
Nevertheless, you have to set the locale:
apiFormatter.locale = Locale(identifier: "en_US_POSIX")
Otherwise you will have problems with 12/24h switching.
let apiFormatter = DateFormatter()
apiFormatter.locale = Locale(identifier: "en_US_POSIX")
// remove this if you want to keep your current timezone (shouldn't really matter, the time is the same)
apiFormatter.timeZone = TimeZone(secondsFromGMT: 0)
apiFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let endDate = apiFormatter.string(from: Date())
print(endDate) // 2020-02-07T08:25:23.470+0000
print(Date()) // 2020-02-07 08:25:23 +0000
Also note that you can use ISO8601DateFormatter instead of DateFormatter.
Try this and adjust according to what format you are getting from server -
private func getFormatedDateInString(_ dateString: String) -> String? {
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
dateFormatter.timeZone = TimeZone(identifier: "UTC")
if let date = dateFormatter.date(from: dateString) {
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
dateFormatter.timeZone = TimeZone.current
let timeStamp = dateFormatter.string(from: date)
return timeStamp
}
return nil
}
so here is the string Date that I want to Convert
2019-03-22T00:00:00
and here is the problem
Remember that I used "yyyy-MM-dd'T'HH:mm:ss" or "yyyy-MM-ddTHH:mm:ss" or "yyyy-MM-dd HH:mm:ss" or yyyy-MM-dd'T'HH:mm:ssZ and some other similar formats
You have to set a time zone and locale when parsing internet dates:
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
// necessary to avoid daylight saving (and other time shift) problems
dateFormatter.timeZone = TimeZone(secondsFromGMT: TimeZone.current.secondsFromGMT())
// necessary to avoid problems with 12h vs 24h time formatting
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
print(dateFormatter.date(from: "2019-03-22T00:00:00"))
The default time zone contains information about daylight saving time and some specific times does not exist there. Instead, we have to use a generic time zone.
See https://developer.apple.com/library/archive/qa/qa1480/_index.html
22 March 2019 around midnight is the day & time when daylight saving change in Iran makes an hour non-existent.
The same can be achieved using ISO8601DateFormatter:
let dateFormatter = ISO8601DateFormatter()
dateFormatter.formatOptions = ISO8601DateFormatter.Options.withInternetDateTime.subtracting(.withTimeZone)
print(dateFormatter.date(from: "2019-03-22T00:00:00"))
Try this function might help
public func dateFormatter(strDate: String) -> String{
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "fa_IR")
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
let date = dateFormatter.date(from: strDate)
let dateString = dateFormatter.string(from: date!)
return dateString
}
dateFormatter.isLenient = true
Ignores missing hours during daylight saving time offset
I want to extract today, yesterday from date so it is localised automatically when I change language like which happens with weekdays and month.
Code for localised date that I am using:
let dateFormatter = Foundation.DateFormatter()
dateFormatter.dateFormat = "MMMM dd, yyyy"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone(identifier: "UTC")
let dateStr = dateFormatter.string(from: datePickerView.date)
let timeStr = "00:00:00.000"
let dateString = NSString(format:"%# %#",dateStr,timeStr)
let mainDF = Foundation.DateFormatter()
mainDF.dateFormat = "MMMM dd, yyyy hh:mm:ss.SSS"
mainDF.locale = Locale(identifier: "en_US_POSIX")
mainDF.timeZone = TimeZone(identifier: "UTC")
let date = mainDF.date(from: dateString as String)
How to achieve this?
DateFormatter has special flag for that: doesRelativeDateFormatting, which renders dates in relative format, using locale set for this formatter.
… If a date formatter uses relative date formatting, where possible it
replaces the date component of its output with a phrase—such as
“today” or “tomorrow”—that indicates a relative date. The available
phrases depend on the locale for the date formatter; whereas, for
dates in the future, English may only allow “tomorrow,” French may
allow “the day after the day after tomorrow,” …
Example:
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale.autoupdatingCurrent // Using system locale
dateFormatter.doesRelativeDateFormatting = true // Enabling relative date formatting
// other dataFormatter settings here, irrelevant for example
dateFormatter.timeStyle = .none
dateFormatter.dateStyle = .medium
let now = Date()
let dateString: String = dateFormatter.string(from: now)
print("dateString: \(dateString)") // Prints `dateString: <Today in current locale>`
I have displayed the list of timezones in my app. If user selects a particular timezones, I need to change the local timezone to the selected timezone by the user.
let region = Region(tz: timeZoneName.timeZone , cal: cal, loc: cal.locale!)
let date = Date().inRegion(region: region).absoluteDate
Here is the problem, the region is changed to the selected timezone but the date issuing the local timezone.
A Date contains no timezone. From apple's docs: A specific point in time, independent of any calendar or time zone.
The timezone comes into play as soon as you want to present a date to the user. And that's what a DateFormatter is for. As #AlexWoe89 already pointed out, it let's you convert a string, containing a date into a Date object, but also lets you convert a given date into a string representing the date in the time zone you set to the timeZone property of DateFormatter.
let date = Date()
var dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
dateFormatter.timeZone = TimeZone(identifier: "America/Los_Angeles")
let dateString1 = dateFormatter.string(from: date)
dateFormatter.timeZone = TimeZone(identifier: "Germany/Berlin")
let dateString2 = dateFormatter.string(from: date)
This will store 2017-10-23 04:27 in dateString1, while the same date leads to 2017-10-23 13:27 in dateString2.
You can use DateFormatter as a solution, try something like this:
let dateString = "<yourDateAsString>"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX") // => there are a lot of identifiers you can use
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.defaultDate = Date()
dateFormatter.dateFormat = "dd-MM-yyyy hh:mm” // => your needed time format
let convertedDate = dateFormatter.date(from: dateString)
I'm looking for a way to display the current GMT-0 time.
So far, I've been doing it like:
let UTCDate = Date()
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let defaultTimeZoneStr = formatter.string(from: UTCDate)
However it returns the current time of the phone.
How can I get the current GMT-0 time using Swift 3?
Before the last line of your code, insert this line:
formatter.timeZone = TimeZone(secondsFromGMT:0)
Or this line:
formatter.timeZone = TimeZone(identifier:"GMT")