Swift add 1 week to current date

Question

I am using a datePicker and trying to establish the minimum date as the current date and the maximum being a week from today. I cannot seem to get the max working. Here is my code:

calendarView.minimumDate = todaysDate
calendarView.maximumDate = [todaysDate .dateByAddingTimeInterval(60*60*24*10)]

Refer this post http://stackoverflow.com/questions/5067785/how-do-i-add-1-day-to-a-nsdate — Khuong, Sep 07 '16 at 04:21
1) Never do date math using `dateByAddingTimeInterval`. 2) Why are you trying to add 10 days when you want to add 1 week? — rmaddy, Sep 07 '16 at 04:30
Does this answer your question? [How do I add 1 day to an NSDate?](https://stackoverflow.com/questions/5067785/how-do-i-add-1-day-to-an-nsdate) — Dirk Bester, May 07 '20 at 17:12

Rashwan L · Answer 1 · 2020-05-11T05:37:27.900

19

You can do:

let today = NSDate()
let cal = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)
let nextWeek = cal!.dateByAddingUnit(NSCalendar.Unit.Day, value: 7, toDate: today, options: NSCalendar.Options.MatchLast)

This will print out 2016-09-14 04:21:14

Swift 5.x

let calendar = Calendar.current
let addOneWeekToCurrentDate = calendar.date(byAdding: .weekOfYear, value: 1, to: Date())

edited May 11 '20 at 05:37

answered Sep 07 '16 at 04:22

Rashwan L

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7
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2

Never use the first option. It will be wrong in some cases. – rmaddy Sep 07 '16 at 04:29
I was looking for a ".week" property, but I guess this works too! – Daniel Springer Jan 13 '19 at 19:50
I was concerned if using a different calendar, but apparently almost all calendars have 7 days in a week: https://www.atlasobscura.com/articles/why-cant-we-get-rid-of-the-7day-week – TruMan1 May 07 '19 at 13:34
1

@DanielSpringer, late reply but check the update with the .week property you asked for – Rashwan L Nov 26 '19 at 21:39

score 6 · Answer 2 · answered May 12 '19 at 01:16

6

This code works well even if over the year-end.

Calendar.current.date(byAdding: .weekOfYear, value: 1, to: date)

answered May 12 '19 at 01:16

mishimay

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1
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Is there any difference in using `.weekOfMonth` instead of `.weekOfYear` in this case? I tried different calendars, locales and timezones but it seems to work fine – fruitcoder Jan 03 '20 at 10:06

score 2 · Answer 3 · answered Sep 17 '20 at 09:37

2

    extension Date {
    func addWeek(noOfWeeks: Int) -> Date {
    return Calendar.current.date(byAdding: .weekOfYear, value: noOfWeeks, to: self)!
    }
   }
    //USAGE    
    let newDate = Date().addWeek(noOfWeeks: 3)

answered Sep 17 '20 at 09:37

Pranit

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Swift add 1 week to current date

3 Answers3

Swift 5.x