How to get the hour of the day with Swift?

Question

How would I get the hour of the day in Swift. I have tried NSCalendar and NSDateComponents, but I'm afraid I'm just starting with Swift.

Answer 1

Swift 5.0 / 4.0 / 3.0

let hour = Calendar.current.component(.hour, from: Date())

 

Or, if you're interested in 12 hour AM/PM date format, then use NSDateFormatter

let formatter = DateFormatter()
formatter.dateFormat = "hh a" // "a" prints "pm" or "am"
let hourString = formatter.string(from: Date()) // "12 AM"

If you want minutes, seconds and others, do as following

let date = Date() // save date, so all components use the same date
let calendar = Calendar.current // or e.g. Calendar(identifier: .persian)

let hour = calendar.component(.hour, from: date)
let minute = calendar.component(.minute, from: date)
let second = calendar.component(.second, from: date)

Check out available components on Apple docs:

.era, .year, .month, .day, .hour, .minute, .second,
.weekday, .weekdayOrdinal, .quarter, weekOfMonth, .weekOfYear,
.yearForWeekOfYear, .nanosecond, .calendar, .timezone

Swift 2.0

let hour = NSCalendar.currentCalendar().component(.Hour, fromDate: NSDate())

Swift 1.0

let hour = NSCalendar.currentCalendar().component(.CalendarUnitHour, fromDate: NSDate())