语法更新了，用components(［.Year］, fromDate: <#NSDate#>, toDate: <#NSDate#>, options: <#NSCalendarOptions#>)就OK

问题已经解决了，用NSYearCalendarUnit就ok了，虽然会有警告，但是程序可以运行

大神的封装是何等的重要！原谅我说一句没用的话，但我觉得这样的代码看看就行，没必要自己写，费力不讨好

第一个参数改成

NSCalendarUnit.CalendarUnitYear

就好了。

你仔细看enum NSCalendarUnit的定义，在一开始有新的定义，我觉得应该是消息提示的有错误，应该是下面我标黑体的CalendarUnitYear。你怎么看？

struct NSCalendarUnit : RawOptionSetType {

    init(_ rawValue: UInt)

    init(rawValue: UInt)

    static var CalendarUnitEra: NSCalendarUnit { get }

    static var CalendarUnitYear: NSCalendarUnit { get }

    static var CalendarUnitMonth: NSCalendarUnit { get }

    static var CalendarUnitDay: NSCalendarUnit { get }

    static var CalendarUnitHour: NSCalendarUnit { get }

    static var CalendarUnitMinute: NSCalendarUnit { get }

 ............................

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitEra instead")

    static var EraCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitYear instead")

    static var YearCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitMonth instead")

    static var MonthCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitDay instead")

    static var DayCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitHour instead")

    static var HourCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitMinute instead")

    static var MinuteCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitSecond instead")

    static var SecondCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitWeekOfMonth or NSCalendarUnitWeekOfYear, depending on which you mean")

    static var WeekCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitWeekday instead")

    static var WeekdayCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=2.0, deprecated=8.0, message="Use NSCalendarUnitWeekdayOrdinal instead")

    static var WeekdayOrdinalCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=4.0, deprecated=8.0, message="Use NSCalendarUnitQuarter instead")

    static var QuarterCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=5.0, deprecated=8.0, message="Use NSCalendarUnitWeekOfMonth instead")

    static var WeekOfMonthCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=5.0, deprecated=8.0, message="Use NSCalendarUnitWeekOfYear instead")

    static var WeekOfYearCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=5.0, deprecated=8.0, message="Use NSCalendarUnitYearForWeekOfYear instead")

    static var YearForWeekOfYearCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=4.0, deprecated=8.0, message="Use NSCalendarUnitCalendar instead")

    static var CalendarCalendarUnit: NSCalendarUnit { get }

    @availability(iOS, introduced=4.0, deprecated=8.0, message="Use NSCalendarUnitTimeZone instead")

    static var TimeZoneCalendarUnit: NSCalendarUnit { get }

}

没有和我一样问题的同学吗？