List of dates for given day of the week Swift

Question

I need to get the List of dates for the given date of the week.

As an example : If user select the random date from picker Like 2017-6-7, I needs to get and display the dates of the week. [2017-6-4, 2017-6-5, 2017-6-6, 2017-6-7, 2017-6-8, 2017-6-9, 2017-6-10]

I couldn't find any solution on the internet.

Thank you

Answer 1

Try this:

let dateInWeek = Date()//7th June 2017

let calendar = Calendar.current
let dayOfWeek = calendar.component(.weekday, from: dateInWeek)
let weekdays = calendar.range(of: .weekday, in: .weekOfYear, for: dateInWeek)!
let days = (weekdays.lowerBound ..< weekdays.upperBound)
    .compactMap { calendar.date(byAdding: .day, value: $0 - dayOfWeek, to: dateInWeek) }

print(days)

It will give you this:

4 June 2017(Sunday)
5 June 2017
6 June 2017
7 June 2017
8 June 2017
9 June 2017
10 June 2017(Saturday)

---

Start fromMonday
The above is default behavior for my calendar that's why it is starting from Sunday.
If you want start from Monday then do this change:

let dayOfWeek = calendar.component(.weekday, from: dateInWeek) - 1

It depends on which locale your calendar is in.

Answer 2

This is a starting point using the date math skills of Calendar

var calendar = Calendar.current
calendar.firstWeekday = 1 // adjust first weekday if necessary
var startOfWeek = Date()
var interval : TimeInterval = 0.0
_ = calendar.dateInterval(of:.weekOfYear, start: &startOfWeek, interval: &interval, for: Date())
for i in 0..<7 {
    print(calendar.date(byAdding: .day, value: i, to: startOfWeek)!)
}