Hijri（伊斯兰）日历在swiftالتاريخالهجري [英] Hijri (islamic) calendar in swift التاريخ الهجري

问题描述

有人可以帮我吗

我正在尝试使用Swift语言创建一个IOS应用程序，我需要使用Hijri（伊斯兰）日历

I'm trying to create an IOS app using Swift language and I need to use Hijri (islamic) calendar

我尝试了很多次但是我失败了:(

I tried many time but I failed :(

这是我的尝试

    let datenow = NSDate()
    let calendar = NSCalendar.currentCalendar()
    let components = calendar.components(NSCalendarUnit(UInt.max), fromDate: datenow)

    var gregorian = NSCalendar(identifier:NSIslamicCivilCalendar)
    var date = gregorian.dateFromComponents(components)

    println(date)

输出错误

   2576-04-25 09:05:08 +0000

我们在1434年的hijri不是2576！

We are in year 1434 in hijri not 2576 !

推荐答案

你正在混合日历，日期和组件：

You're mixing up the calendars, dates & components:

let datenow = NSDate() 
    // This is a point in time, independent of calendars
let calendar = NSCalendar.currentCalendar() 
    // System calendar, likely Gregorian 
let components = calendar.components(NSCalendarUnit(UInt.max), fromDate: datenow) 
    // Gregorian components

println("\(components.year)") // "2014"

var islamic = NSCalendar(identifier:NSIslamicCivilCalendar)! // Changed the variable name 
    // *** Note also NSCalendar(identifier:) now returns now returns an optional ***
var date = islamic.dateFromComponents(components) 
    // so you have asked to initialise the date as AH 2014

println(date) 
    // This is a point in time again, sometime in AH 2014, or AD 2576

您需要做的只是：

let datenow = NSDate()
let islamic = NSCalendar(identifier:NSIslamicCivilCalendar)!
let components = islamic.components(NSCalendarUnit(UInt.max), fromDate: datenow)
println("Date in system calendar:\(datenow), in Hijri:\(components.year)-\(components.month)-\(components.day)")
   //"Date in system calendar:2014-09-25 09:53:00 +0000, in Hijri:1435-11-30"

要获取格式化字符串，而不仅仅是整数组件，您需要使用 NSDateFormatter ，它允许您指定日历和&日期以及格式。请参见此处。

To get a formatted string, rather than just the integer components, you need to use NSDateFormatter, which will allow you to specify the calendar & date as well as the format. See here.

更新

简单地将数字音译为（东方）阿拉伯数字（作为0 ... 9被称为（西方）阿拉伯数字以区分它们例如，根据要求，你可以使用：

To simply transliterate the numerals to (Eastern) Arabic numerals (as 0...9 are referred to as (Western) Arabic numerals to distinguish them from, say, Roman numerals), as requested, you could use:

let sWesternArabic = "\(components.day)-\(components.month)-\(components.year)"
let substituteEasternArabic = ["0":"٠", "1":"١", "2":"٢", "3":"٣", "4":"٤", "5":"٥", "6":"٦", "7":"٧", "8":"٨", "9":"٩"]
var sEasternArabic =  ""
for i in sWesternArabic {
    if let subs = substituteEasternArabic[String(i)] { // String(i) needed as i is a character
        sEasternArabic += subs
    } else {
        sEasternArabic += String(i)
    }
}

println("Western Arabic numerals = \(sWesternArabic), Eastern Arabic numerals = \(sEasternArabic)")

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