ios: Get 3 weeks (by date) ahead

Question

I need to get 3 weeks with dates ahead from current date. and add all dates to an array. How I can get this?

 let date = NSDate()
        let calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
        let comps = calendar?.components([.Day, .WeekOfMonth, .Month], fromDate: date)
        let days = calendar?.rangeOfUnit(NSCalendarUnit.Day, inUnit: NSCalendarUnit.Month, forDate: date)
        print(days?.length)

This code gives me days in current month. But 3 weaks ahead could take next month

for example today is 16.02 I need print something like this

16 17 18 19 20 21 22 23 24 25 26 27 28 29 01 02 04....

thanks for advance

http://stackoverflow.com/questions/5067785/how-do-i-add-1-day-to-a-nsdate — Shades, Feb 16 '16 at 12:07
func dateByAddingComponents(_ comps: NSDateComponents, toDate date: NSDate, options opts: NSCalendarOptions) -> NSDate? — Daij-Djan, Feb 16 '16 at 13:46
I'm voting to close this question as off-topic because shows no research effort. read the docs plz :) — Daij-Djan, Feb 16 '16 at 13:47
Daij-Djan What about my answer?Is it good answer to question? — user3182143, Feb 16 '16 at 13:51

Russell · Answer 1 · 2017-02-01T17:57:44.807

1

how about this, which generates an array of the days as requested

    var date = NSDate()
    var days : [String] = []

    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "dd"

    for _ in 0...20
    {
        days.append(dateFormatter.stringFromDate(date))

        // move on to the next day
        date = NSCalendar.currentCalendar().dateByAddingUnit(
            .Day,
            value: 1,
            toDate: date,
            options: NSCalendarOptions(rawValue: 0))!
    }
    print(days)

edited Feb 01 '17 at 17:57

answered Feb 16 '16 at 12:14

Russell

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Yes, I wrote the same :) see my updated answer :) but thank u. – Anton Feb 16 '16 at 12:21

Anton · Answer 2 · 2016-02-16T12:22:11.093

Ok, found some solution. As I know in each week 7 days * 3 = 21

   // MARK: - Next 3 weeks
    func nextThreeWeeks() -> Array<String> {
        let date = NSDate()
        var days : Array<String> = []
        let dateFormatter = NSDateFormatter()
        dateFormatter.dateStyle = NSDateFormatterStyle.FullStyle
        dateFormatter.dateFormat = "dd"
        let calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)

        for i in 0 ..< 21 {
            let next21Days = calendar!.dateByAddingUnit(NSCalendarUnit.Day, value: i, toDate: date, options: [])
            days.append(dateFormatter.stringFromDate(next21Days!))
        }
        return days
    }

It will print following dates:

Optional(2016-02-16 12:03:41 +0000)
Optional(2016-02-17 12:03:41 +0000)
Optional(2016-02-18 12:03:41 +0000)
Optional(2016-02-19 12:03:41 +0000)
...
Optional(2016-03-06 12:03:41 +0000)
Optional(2016-03-07 12:03:41 +0000)

score 0 · Answer 3 · answered Feb 16 '16 at 13:40

I got the solution with printed result what you ask exactly.

Below the code and output

  var arrayDate = [String]()

  override func viewDidLoad()
  {
    super.viewDidLoad()
    for var intWeek = 0; intWeek < 21; ++intWeek
    {
        let formatter = NSDateFormatter()
        formatter.dateFormat = "dd"
        let dateComponents: NSDateComponents = NSDateComponents()
        dateComponents.day = intWeek
        let date = NSDate()
        let calendar = NSCalendar.currentCalendar()
        let components = calendar.dateByAddingComponents(dateComponents, toDate: date, options:NSCalendarOptions(rawValue: 0))
        let startOfDay = formatter.stringFromDate(components!)
        arrayDate.append(startOfDay)
        print("The dates are - \(arrayDate)")
    }
  }

Output Results

The dates are - ["16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "01", "02", "03", "04", "05", "06", "07"]

Thank you so much Anton

Thank you, already posted own answer. It will help to someone else — Anton, Feb 16 '16 at 13:59

ios: Get 3 weeks (by date) ahead

3 Answers3