swift - 如何将变量的值设置为在日期选择器中选择的小时值

Question

我有一个名为 datePicker 的 UIDatePicker。我想让 var datePickerHour 等于在日期选择器中选择的小时值。目前，我能够获取 datePicker.date，其结果为 2017-03-15 05:24:12 +0000。

当前代码是...

@IBOutlet weak var datePicker: UIDatePicker!

@IBAction func button(_ sender): Any) {
    let datePickerHour = datePicker.date
    print(datePickerHour)
}

感谢您的帮助。

Answer 1

试试这段代码:

let currentDate = datePicker.date
let calender : NSCalendar = NSCalendar.current as NSCalendar
let datePickerHour = calender.components(NSCalendarUnit.Hour , from: currentDate as Date)
print(datePickerHour)