工作日组件问题

Question

我正在尝试使用日历中的工作日。我应该在星期一收到，但不知何故我在星期二收到。有什么想法吗？

let date = Date(timeIntervalSince1970: 1519654139)
var calendar = Calendar(identifier: .gregorian)
calendar.locale = Locale(identifier: "en_US_POSIX")
calendar.timeZone = TimeZone(secondsFromGMT: 3600)!

let weekDayComponent = calendar.component(Calendar.Component.weekday, from: date)
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEE EEEE"
print("Date formatter says it's " + dateFormatter.string(from: date))
print("Weekday component is \(weekDayComponent)")

控制台输出：

Date formatter says it's Mon Monday
Weekday component is 2

[编辑]：为什么我收到 2 个，而不是 1 个？是的，calendar.firstWeekday 的值为 1。

Answer 1

公历中的星期从星期日开始，因此这是正确的行为，2 是星期一。 Documentation 明确指出：

Weekday units are the numbers 1 through n, where n is the number of days in the week. For example, in the Gregorian calendar, n is 7 and Sunday is represented by 1.

工作日组件问题

Weekday component issue

iphone

nsdateformatter

ios

swift