如何在日期格式中添加 th 和 st [英] How to add th and st in Date Format
本文介绍了如何在日期格式中添加 th 和 st的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想将日期转换为星期五 17 日下午 7:00" 这种格式.但我无法在日期后添加th"和st".我正在使用下面的代码来转换这样的日期格式.请告诉我.我为这种格式做什么?
I want to convert the date like "Friday 17th, 7:00pm" this format. but I am unable to add "th" and "st" after the date. I am using below code to convert the date format like this. please tell me. What I do for this format?
func convertDateFormater(_ date: String) -> String
{
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"//this your string date format
dateFormatter.timeZone = NSTimeZone(name: "UTC") as TimeZone?
//dateFormatter.locale = Locale(identifier: "your_loc_id")
let convertedDate = dateFormatter.date(from: date)
guard dateFormatter.date(from: date) != nil else {
assert(false, "no date from string")
return ""
}
dateFormatter.dateFormat = "EEEE dd, h:mma"///this is what you want to convert format
dateFormatter.timeZone = NSTimeZone(name: "UTC") as TimeZone?
let timeStamp = dateFormatter.string(from: convertedDate!)
return timeStamp
}
推荐答案
只要不同的语言环境不发挥任何作用,您可以执行以下操作:
As long as different locales do not play any role you could do something like this:
let date = Date()
let calendar = Calendar.current
let day = calendar.component(.day, from: date)
let daySuffix: String
switch day {
case 11...13: return "th"
default:
switch day % 10 {
case 1: return "st"
case 2: return "nd"
case 3: return "rd"
default: return "th"
}
}
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEE dd'\(daySuffix)', h:mma"
dateFormatter.string(from: date)
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