I want to display the date in this format (Wed Jan 10 2018 11:20:17). How to convert milliseconds to this format in swift?I want to get the day as Wed, time as 10:30 AM or PM and the date as 10 Jan.
First convert it in date by dividing it by 1000
var date = Date(timeIntervalSince1970: (1477593000000 / 1000.0))
then use DateFormatter to convert in desired format you need
Note: Not tested in XCODE
var dateFormatter = DateFormatter()
dateFormatter.dateFormat = "E, d MMM yyyy HH:mm:ss"
print(dateFormatter.string(from: date))
Hope it is helpful to you.
Related
I need to obtain a date from some variable values
So I specify year, month and day and I need a Date as return
Doing the following works except for the day because it return the day input - 1
let todayDate: Date = Calendar.current.startOfDay(for: Date.from(year: 2022, month: 09, day: 05)!)
print("today date = \(todayDate)")
extension Date {
static func from(year: Int, month: Int, day: Int) -> Date? {
let calendar = Calendar(identifier: .gregorian)
var dateComponents = DateComponents()
dateComponents.year = year
dateComponents.month = month
dateComponents.day = day
return calendar.date(from: dateComponents) ?? nil
}
}
And the output is
today date = 2022-09-04 22:00:00 +0000
Date and time can be a bit tricky. The Date struct stores a point in time relative to GMT. If you print it it will show exactly that.
Solution:
Don´t use print, use a proper Dateformatter. To illustrate what I mean use this in a playground:
let date = Calendar.current.startOfDay(for: Date())
print(date)
//2022-09-03 22:00:00 +0000
// when it is 4.th of september 00:00 in my timezone (+- Daylight saving) it is this time in GMT
let formatter = DateFormatter()
formatter.dateFormat = "dd MM yyyy HH:mm:ss"
print(formatter.string(from: date))
//04 09 2022 00:00:00
// this is the time in my timezone
So the issue here is not that it has the wrong time, it is just not presented in the correct time zone.
How can I format a date that includes a friendly day and month literal such as:
"Thursday, June 14, 2018"
Day can be:
Sunday, Monday, Tuesday, Wedenesday, Thursday, Friday, Saturday,
Friday
Month can be:
January, February, March, April, May, June, July, August, September,
October, November, December
let formatter = DateFormatter()
formatter.dateFormat = format
return formatter.date(from: "Thursday, June 14, 2018")
What should the format be set to?
Something like this?
static let format = "DAY, MONTH, dd, YYYY"
Is it even possible to do this with DateFormatter() ?
Use EEEE for the full weekday name and MMMM for the full month name. But since you are parsing fixed formatted strings that are in English, you must also set the formatter's locale to en_US_POSIX.
let formatter = DateFormatter()
formatter.dateFormat = "EEEE, MMMM d, yyyy"
formatter.locale = Locale(identifier: "en_US_POSIX")
return formatter.date(from: "Thursday, June 14, 2018")
Note that this will treat the date as being in the user's local timezone.
See the full specification for all possible date formatting patterns.
The new month of Feburary date continues to count up from January. So instead of showing Feburary 1St, it's showing Feburary 32 Like the picture below, any help would be appreciated thanks.
This is how I am getting the current date:
let date = Date()
let format = DateFormatter()
format.dateFormat = "EE, MMM DD, YYYY"
let currentDate = format.string(from: date)
header.headerTitle.text = currentDate
This is the result Feburary 32, 2018
Change "EE, MMM DD, YYYY" to "EE, MMM dd, yyyy" (or maybe just one d) and next time please try to read up on how date formatters work before trying to use them:
http://userguide.icu-project.org/formatparse/datetime
I have a textfield connected to a date picker
I am then trying to store the selected date into core data,
My log off the date picked by the user seems ok:
2016-01-29 00:00:00 +0000 [I strip the time component with some code]
This is converted into a String and displayed in the textfield called startDate.
func handleDatePicker(sender: UIDatePicker) {
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "EEE, dd MMM YYYY"
startDate.text = dateFormatter.stringFromDate(sender.date)
}
Now the strange thing is that when I try and store this into CoreData and convert the string back into a date (the attribute I am saving it into is configured as a Date)
let cont = self.context
let newCustomer = NSEntityDescription.entityForName("Customer", inManagedObjectContext: cont)
let aCust = Customer(entity: newCustomer!, insertIntoManagedObjectContext: cont)
let DF = NSDateFormatter()
DF.dateFormat = "EEE, dd MMM YYYY"
aCust.c15das = DF.dateFromString(startDate.text!)
print("Saved Date: \(DF.dateFromString(startDate.text!))")
Now the log prints out:
2015-12-25 00:00:00 +0000
Why the difference? How can I stop this happening?
Sorry if its something obvious that I am not spotting.
"EEE, dd MMM YYYY" -> YYYY: "Week of Year Calendar", aka "ISO Week Date System". The first week does not start on the first January. If the January 1st is either Monday, Tuesday, Wednesday or Thursday, the whole week is the first week of the new year. if it is Friday, Saturday or Sunday the week is the 53rd week of the last year. So this is a calendar with year that only have integral weeks. Either 52 or 53, rather than 365 or 366 days.
In this calendar January 29th would be the 5th day of the 4th week of the year 2016 — 2016-W4-5. This system does not know months and therefor your date is nonsense.
You want "EEE, dd MMM yyyy", as yyyy indicates a year that starts on 1st of January and ends after 31st of December — The Gregorian Year.
[I strip the time component with some code]
You shouldn't do that. Rather NSCalendar's method to get a date at the beginning of the day.
var today: NSDate?
cal.rangeOfUnit(.Day, startDate: &today, interval: nil, forDate: date)
Try this code, that worked for me:
let dateString = "Fri, 29 Jan 2016" // change to your date format
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "EEE, dd MMM yyyy"
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let date = dateFormatter.dateFromString(dateString)
print(date!)
I'm trying to convert string to Date, but it result incorrect date.
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd MMM YYYY"
let dt = dateFormatter.dateFromString("17 Sep 2015")
println("Date : \(dt)")
It result
Date : Optional(2014-12-20 18:30:00 +0000)
Please let me know where I'm making mistake. I tried other format too, but it return nil.
The format for year is incorrect, it should be yyyy, not YYYY.
"Y": Year (in "Week of Year" based calendars). This year designation is used in ISO year-week calendar as defined by ISO 8601, but can be used in non-Gregorian based calendar systems where week date processing is desired. May not always be the same value as calendar year.
See: Date Field SymbolTable.
Also: ICU Formatting Dates and Times
Your date format string is wrong. Change it to the following:
dateFormatter.dateFormat = "dd MMM yyyy"
For more information read Date Formatters documentation.