Xcode:表达式类型不明确，没有更多上下文

Xcode错误：表达式类型不明确，没有更多上下文

我怎么修理它

let componentss = calendar.components(.CalendarUnitYear | .CalendarUnitMonth | .CalendarUnitDay | .CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitSecond, fromDate: date)

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CalendarUnit

名称在Swift 2.0中已更改。试试这个：

let componentss = calendar.components([.Year, .Month, .Day, .Hour, .Minute, .Second], fromDate: date)

谢谢，这很有效

dateFormat.dateStyle = NSDateFormatterStyle.ShortStyle
dateFormat.timeStyle = NSDateFormatterStyle.ShortStyle
datePicker.datePickerMode = UIDatePickerMode.DateAndTime
datePicker.addTarget(self, action: Selector("updateDateField:"),forControlEvents:UIControlEvents.ValueChanged)
yearLabel.inputView = datePicker

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如何将其转换为dd-MM-yyyy H:MM:ss？

好的，但这次出现了另一个错误：let-cal=NSCalendar.currentCalendar（）let-sec=cal.components（.CalendarUnitSecond，fromDate:startDate，toDate:endDate，options:[]）没有更多的

。CalendarUnitSecond

。将其更改为

[.Second]