从 NSCalendar 组件中获取小时、分钟、秒？（迅速）[重复]答案

【问题标题】：Get hour, minitues, seconds from NSCalendar components? (swift) [duplicate]从 NSCalendar 组件中获取小时、分钟、秒？（迅速）[重复]
【发布时间】：2015-11-06 22:21:23
【问题描述】：

我想从 NSCalendar 获取小时、分钟、秒：

    let calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
    let units = NSCalendarUnit.Hour | NSCalendarUnit.Minute | NSCalendarUnit.Second
    let components = calendar?.components(units, fromDate: NSDate())
    var hours = components.hour
    var min = components.minute
    var sec = components.second

和

// This line is error, How to get the units ?
units = NSCalendarUnit.Hour | NSCalendarUnit.Minute | NSCalendarUnit.Second

【问题讨论】：

标签： ios swift

【解决方案1】：

这是因为它需要一组选项，试试这个：

[NSCalendarUnit.Hour, NSCalendarUnit.Minute, NSCalendarUnit.Second]

【讨论】：

【解决方案2】：

let calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
let components = calendar?.components([.Hour, .Minute, .Second], fromDate: NSDate())
var hours = components?.hour
var min = components?.minute
var sec = components?.second

【讨论】：