Making Date With Given Numbers

Question

I have the following Swift (Swift 3) function to make a date (Date) with date components (DateComponents).

func makeDate(year: Int, month: Int, day: Int, hr: Int, min: Int, sec: Int) -> NSDate {
    let calendar = NSCalendar(calendarIdentifier: .gregorian)!
    let components = NSDateComponents()
    components.year = year
    components.month = month
    components.day = day
    components.hour = hr
    components.minute = min
    components.second = sec
    let date = calendar.date(from: components as DateComponents)
    return date! as NSDate
}

If I use it, it will return a GMT date.

override func viewDidLoad() {
    super.viewDidLoad()
    let d = makeDate(year: 2017, month: 1, day: 8, hr: 22, min: 16, sec: 50)
    print(d) // 2017-01-08 13:16:50 +0000
}

What I actually want to return is a date (2017-01-08 22:16:50) literally based on those numbers. How can I do that with DateComponents? Thanks.

Answer 1

The function does return the proper date. It's the print function which displays the date in UTC.

By the way, the native Swift 3 version of your function is

func makeDate(year: Int, month: Int, day: Int, hr: Int, min: Int, sec: Int) -> Date {
    var calendar = Calendar(identifier: .gregorian)
    // calendar.timeZone = TimeZone(secondsFromGMT: 0)!
    let components = DateComponents(year: year, month: month, day: day, hour: hr, minute: min, second: sec)
    return calendar.date(from: components)!
}

But if you really want to have UTC date, uncomment the line to set the time zone.