How to change UIDatePicker to a specific time (in code)

Question

I need to change the UIDatePicker to a specific dynamically.

My date picker is set to time mode only. i can set the time with

timePicker.setDate(NSDate(), animated: false)

but i cant figure out how to change it to a different time and not to current time.

So how do i change it?

Thanks

arthankamal · Accepted Answer · 2015-03-11T12:09:18.627

20

You've to change the time, you can do it using NSDateComponents and set the modified date to your DatePicker

var calendar:NSCalendar = NSCalendar.currentCalendar()
let components = calendar.components(NSCalendarUnit.HourCalendarUnit | NSCalendarUnit.MinuteCalendarUnit, fromDate: NSDate())
components.hour = 5
components.minute = 50
datePicker.setDate(calendar.dateFromComponents(components)!, animated: true)

edited Mar 11 '15 at 12:09

answered Mar 11 '15 at 12:02

arthankamal

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1

Please don't ever do this if the `UIDatePicker` is in time only mode. The reason is that, imagine the above code is executed in New York at 14 March 2021. If the code trying to change the hour = 2. It will be very wrong. Due to Day Light Saving, there is no 2am in 14 March 2021. A correct way is to hard coded a timezone without DST like GMT, so that user can read/ write time only information to DatePicker without the above mentioned issue. – Cheok Yan Cheng Nov 10 '21 at 10:45

score 9 · Answer 2 · edited Aug 25 '18 at 15:05

9

Swift 3 and 4:

extension UIDatePicker {

   func setDate(from string: String, format: String, animated: Bool = true) {

      let formater = DateFormatter()

      formater.dateFormat = format

      let date = formater.date(from: string) ?? Date()

      setDate(date, animated: animated)
   }
}

Usage:

datePicker.setDate(from: "1/1/2000 10:10:00", format: "dd/MM/yyyy HH:mm:ss")

edited Aug 25 '18 at 15:05

Naveed Ahmad

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answered Dec 14 '16 at 11:17

zombie

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Perfect Solution, Thanks @Zombie checked in Swift 4 – Naveed Ahmad Aug 25 '18 at 15:05

score 6 · Answer 3 · edited Nov 19 '20 at 22:25

6

Swift 5

let calendar = Calendar.current
var components = DateComponents()
components.hour = 5
components.minute = 50
    
timePicker.setDate(calendar.date(from: components)!, animated: false)

edited Nov 19 '20 at 22:25

Michal Šrůtek

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answered May 09 '18 at 04:28

Jay Mutzafi

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7

score 5 · Answer 4 · edited Mar 05 '16 at 18:07

5

To set the date pick (time only) to a specific time such as "09:00" I would set the NSDateComponents and picker like this.

let calendar = NSCalendar.currentCalendar()
let components = NSDateComponents()
components.hour = 9
components.minute = 0
timePicker.setDate(calendar.dateFromComponents(components)!, animated: true)

edited Mar 05 '16 at 18:07

Tunaki

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answered Mar 05 '16 at 18:05

Kevin Horgan

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Useful for setting UIDatePicker when using datePicker.datePickerMode = UIDatePickerMode.CountDownTimer – ObjectiveTC Jul 27 '16 at 12:44

score 4 · Answer 5 · edited Nov 12 '15 at 19:22

4

You can customize it by formatting your Date and Time this way:

let dateString = "12-11-2015 10:50:00"
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm:ss"
let date = dateFormatter.dateFromString(dateString)

timePicker.setDate(date, animated: false)

edited Nov 12 '15 at 19:22

rbrundritt

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answered Mar 11 '15 at 11:53

Diamond King

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i need to set a UIDatePicker not a textfield – ilan Mar 11 '15 at 11:55
format Date and Time is not the answer for setting date and time for UIDatePicker – CodeOverRide Nov 12 '15 at 18:52
Updated: Divi I see what you try to do and could've made more clear by adding more code to yours. I try to undo vote but couldn't. – CodeOverRide Nov 12 '15 at 19:07

score 3 · Answer 6 · answered Mar 11 '15 at 11:37

3

you can use it like this

timePicker.setDate(NSDate(timeInterval: 60, sinceDate: NSDate()), animated: false)

or

timePicker.setDate(NSDate(timeIntervalSinceNow: 60), animated: false)

it would set date with difference of 1 minute from current date.

answered Mar 11 '15 at 11:37

Dheeraj Singh

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I need to change to a totally different time. i get a time from server in "HH:mm" format and i need to show it in date picker – ilan Mar 11 '15 at 11:38

score 0 · Answer 7 · answered Sep 30 '16 at 11:39

If u do not want to type multiple lines of code each time when you want Date or Time from string U can copy below function and use as

let DateVar = DateTimeFrmSrgFnc("31/12/1990",FmtSrg: "dd/MM/yyyy")

timePicker.setDate(DateVar, animated: false)

func DateTimeFrmSrgFnc(DateSrgPsgVar: String, FmtSrg FmtSrgPsgVar: String)-> NSDate
{
    // Format: "dd-MM-yyyy HH:mm:ss"

    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = FmtSrgPsgVar
    return dateFormatter.dateFromString(DateSrgPsgVar)!
}

How to change UIDatePicker to a specific time (in code)

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