xcode 从日期获取工作日 - Swift 3
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Get Weekday from Date - Swift 3
提问by Martin Vidic
I have looked around a bit, but didnt find a quick answer for this in swift 3. I get todays weekday like this:
我环顾四周，但没有在 swift 3 中找到一个快速答案。我今天的工作日是这样的：
let weekday = Calendar.current.component(.weekday, from: Date())
But instead, i would like to get the weekday of a given date. How is this done? Thanx
但相反，我想获得给定日期的工作日。这是怎么做的？谢谢
回答by Joe Daniels
Presumably you have a Datealready?
想必你已经Date有了？
let weekday = Calendar.current.component(.weekday, from: myDate)
Maybe you want the name of the weekday?
也许你想要工作日的名字？
let f = DateFormatter()
f.weekdaySymbols[Calendar.current.component(.weekday, from: Date()) - 1]
The -1is added at the end because Calendar.current.component(.weekday, from: Date()) returns values from 1-7 but weekdaySymbols expects array indices.
的-1是在结束时加入，因为Calendar.current.component（.weekday，来自：日期（））1-7返回值，但预计weekdaySymbols阵列索引。
Investigate the NSCalendar/DateComponentsapi or edit your question to be more specific if you need help with the DateComponents api.
如果您需要有关 DateComponents api 的帮助，请调查NSCalendar/ DateComponentsapi 或编辑您的问题以使其更具体。
回答by Yakup Ad
let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy"
//OR dateFormatter.dateFormat = "EEEE, MMMM dd, yyyy"
let currentDateString: String = dateFormatter.string(from: date)
print("Current date is \(currentDateString)")
Current date is Monday, June 29, 2017
当前日期是 2017 年 6 月 29 日，星期一
回答by Sukhwinder Singh
Swift4 get week day from DateFormatter
Swift4 从 DateFormatter 获取工作日
func getTodayWeekDay()-> String{
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEE"
let weekDay = dateFormatter.string(from: Date())
return weekDay
}
回答by Yedy
To get local format you can use:
要获取本地格式，您可以使用：
extension Date{
func stringValueFullWithTime()-> String?{
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .full
dateFormatter.timeStyle = . short
dateFormatter.locale = Locale.current
return dateFormatter.string(from: self)
}
This will print as german local:
Sonntag, 11. November 2018 um 11:17
这将打印为德国本地：
Sonntag，2018 年 11 月 11 日 11:17
回答by Devesh
If you want dayNumber component in TimeZone
如果你想要 TimeZone 中的 dayNumber 组件
func dayNumberOfWeek() -> Int? {
let timeZone = TimeZone(abbreviation: "EDT")
let component = Calendar.current.dateComponents(in: timeZone!, from: self)
return component.day
}
