如何将日期范围格式化为“MMM，d”？

我正在尝试显示当前日期的周数以及周数的日期范围。现在日期范围格式是 DateTime，我想将其更改为“Jan 13”。关于如何解决这个问题有什么建议吗？

override func viewDidLoad() {
    super.viewDidLoad()


    let dateToday = Date()
    let weekNumber = NSCalendar.current.component(.weekOfYear, from: dateToday)
    let weekRange = dayRangeOf(weekOfYear: weekNumber, for: dateToday)

    weekLabel.text = String("Week #\(weekNumber): \(weekRange)")
}

func dayRangeOf(weekOfYear: Int, for date: Date) -> Range<Date>
{
    let calendar = Calendar.current
    let year = calendar.component(.yearForWeekOfYear, from: date)
    let startComponents = DateComponents(weekOfYear: weekOfYear, yearForWeekOfYear: year)
    let startDate = calendar.date(from: startComponents)!
    let endComponents = DateComponents(day:7, second: -1)
    let endDate = calendar.date(byAdding: endComponents, to: startDate)!
    return startDate..<endDate
}

有一个专用的 API 来显示日期间隔：DateIntervalFormatter https://developer.apple.com/documentation/foundation/dateintervalformatter

let intervalForatter = DateIntervalFormatter()
intervalFormatter.timeStyle = .none
intervalFormatter.dateStyle = .medium
weekLabel.text = String("Week #\(weekNumber): \(intervalFormatter.string(from: weekRange.lowerBound, to: weekRange.upperBound))")

您还可以使用自定义日期格式（顺便说一句，1 月 13 日是MMM d)

let intervalFormatter = DateIntervalFormatter()
intervalFormatter.dateTemplate = "MMM d"
let text = String("Week #\(weekNumber): \(intervalFormatter.string(from: weekRange.lowerBound, to: weekRange.upperBound))")