如何用文字表达现在的时间

Question

我可以得到当前时间，现在我想用文字输出。

let date = Date()
let calendar = Calendar.current
let hour = calendar.component(.hour, from: date)
let minutes = calendar.component(.minute, from: date)
let seconds = calendar.component(.second, from: date)
print("hours = \(hour):\(minutes):\(seconds)")

输出

10:30

如何得到这样的 -

十点半

Answer 1

此代码将向您展示实现最终目标的可能性。请记住，如上所述，您需要为您想要实现的组合创建逻辑。

Swift 3

let date = Date()
let calendar = Calendar.current
let hour = calendar.component(.hour, from: date)
let minutes = calendar.component(.minute, from: date)
let seconds = calendar.component(.second, from: date)

func spell(_ number: Int) -> String {
    let formatter = NumberFormatter()
    formatter.numberStyle = .spellOut // This will convert the number to words.
    return formatter.string(from: NSNumber(value: number))!
}

if minutes == 30 {
    let hourString = spell(hour)
    print("It's half past \(hourString)")
}

这可能是您使用时间范围范围的一种方式。

if case 1 ... 14 = minutes {
     let hourString = spell(hour) // This will give your hour in word form
     let minString = spell(minutes) // This will give your minutes in word form
     print("It's \(minString) past \(hourString)")
}

Answer 2

正如@MwcsMac 在他的回答中指出的那样，解决这个问题的关键是 Formatter（曾经称为 NSFormatter），特别是将 .numberStyle 设置为 .spellOut.

虽然这会选择当前的语言环境（以及语言），但问题是除英语之外的许多其他语言不使用相同的 "half-past"、"quarter-to" 术语 - 例如，在德语 10:30 是 "halb elf"，字面意思是 "half (to) eleven".

编写假定语言环境为English/American的代码是非常糟糕的做法，如果出现以下情况，应用可能会被拒绝它在这些区域之外提供，所以最好的办法是将“10:30”格式设置为 "ten thirty"、"zehn dreißig".

向@MwcsMac 道歉的代码：

import Foundation

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

func spell(_ number: Int, _ localeID: String) -> String {
    let formatter = NumberFormatter()
    formatter.numberStyle = .spellOut
    // Specify the locale or you will inherit the current default locale
    formatter.locale = Locale(identifier: localeID)
    if let s = formatter.string(from: NSNumber(value: number)) {
        // AVOID forced unwrapping at all times!
        return s
    } else {
        return "<Invalid>" // or make return optional and return `nil`
    }
}
spell(hour, "EN") + " " + spell(minute, "EN") // "nineteen thirty-three"
spell(hour, "FR") + " " + spell(minute, "FR") // ""dix-neuf trente-trois"
spell(hour, "AR") + " " + spell(minute, "AR") // "تسعة عشر ثلاثة و ثلاثون"

如何用文字表达现在的时间

How to express current time in words

foundation

swift