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iOS Swift que convierte el componente del calendario int mes al mes de cadena de estilo medio

Question

Quiero mostrar el calendario en este formato

al usuario. Una opción es usar el "rango de cadena" para obtener los componentes individuales del calendario. El segundo es conseguirlo usando NSCalendar, que a mi me parece el mejor (¿verdad?). Así que mi código es el siguiente. pero hay dos problemas.

1. No obtengo el formulario de hora local "componentes de hora y minuto"
2. Estoy recibiendo mes en Int. Quiero que esté en String (mes en mediumStyle)

¿Alguien sabe como conseguir lo que necesito? Imagen adjunta es exactamente lo que quiero lograr. Allí estoy usando tres UILabel uno para "fecha", segundo para "mes, año" y tercero para "tiempo".

Cualquier ayuda sería apreciada.

var inputDateString = "Jun/12/2015 02:05 Am +05:00"

override func viewDidLoad() {
    super.viewDidLoad()
    let newDate = dateformatterDateString(inputDateString)
    let calendar = NSCalendar.currentCalendar()
    let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitMonth | .CalendarUnitYear | .CalendarUnitDay, fromDate: newDate!)

    let hour = components.hour
    let minutes = components.minute
    let month = components.month
    let year = components.year
    let day = components.day

    println(newDate)
    println(components)
    println(day)     // 12
    println(month)   // 6 -----> Want to have "Jun" here
    println(year)    // 2015
    println(hour)    // 2 ------> Want to have the hour in the inputString i.e. 02
    println(minutes) // 35 ------> Want to have the minute in the inputString i.e.  05
}

func dateformatterDateString(dateString: String) -> NSDate? {
    let dateFormatter: NSDateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "MMM/dd/yyyy hh:mm a Z"
    //      dateFormatter.timeZone = NSTimeZone(abbreviation: "UTC")
    dateFormatter.timeZone = NSTimeZone.localTimeZone()
    return dateFormatter.dateFromString(dateString)
}

Answer 1

Puede utilizar DateFormatter de la siguiente manera:

extension Formatter {
    static let monthMedium: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "LLL"
        return formatter
    }()
    static let hour12: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "h"
        return formatter
    }()
    static let minute0x: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "mm"
        return formatter
    }()
    static let amPM: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "a"
        return formatter
    }()
}
extension Date {
    var monthMedium: String  { return Formatter.monthMedium.string(from: self) }
    var hour12:  String      { return Formatter.hour12.string(from: self) }
    var minute0x: String     { return Formatter.minute0x.string(from: self) }
    var amPM: String         { return Formatter.amPM.string(from: self) }
}

let date = Date()

let dateMonth  = date.monthMedium  // "May"
let dateHour   = date.hour12       // "1"
let dateMinute = date.minute0x     // "18"
let dateAmPm = date.amPM           // "PM"

Answer 2

NSDateFormatter tiene monthSymbols , shortMonthSymbols y veryShortSymbols .

Así que prueba esto:

let dateFormatter: NSDateFormatter = NSDateFormatter()

let months = dateFormatter.shortMonthSymbols
let monthSymbol = months[month-1] as! String // month - from your date components

println(monthSymbol)

Answer 3

I am adding three types. Have a look.

        //Todays Date
        let todayDate = NSDate()
        let calendar = NSCalendar(identifier: NSCalendarIdentifierGregorian)!
        let components = calendar.components(.CalendarUnitYear | .CalendarUnitMonth | .CalendarUnitDay, fromDate: todayDate)
        var (year, month, date) = (components.year, components.month, components.day)
        println("YEAR: /(year)  MONTH: /(month) DATE: /(date)")

        //Making a X mas Yr
        let morningOfChristmasComponents = NSDateComponents()
        morningOfChristmasComponents.year = 2014
        morningOfChristmasComponents.month = 12
        morningOfChristmasComponents.day = 25
        morningOfChristmasComponents.hour = 7
        morningOfChristmasComponents.minute = 0
        morningOfChristmasComponents.second = 0

        let morningOfChristmas = NSCalendar.currentCalendar().dateFromComponents(morningOfChristmasComponents)!
        let formatter = NSDateFormatter()
        formatter.dateStyle = NSDateFormatterStyle.LongStyle
        formatter.timeStyle = .MediumStyle
        let dateString = formatter.stringFromDate(morningOfChristmas)
        print("dateString : /(dateString)")


        //Current month - complete name
        let dateFormatter: NSDateFormatter = NSDateFormatter()
        let months = dateFormatter.monthSymbols
        let monthSymbol = months[month-1] as! String
        println("monthSymbol  : /(monthSymbol)")


Print Results:

YEAR: 2015  MONTH: 10 DATE: 9
dateString : December 25, 2014 at 7:00:00 AM
monthSymbol  : October