How to reduce few minutes for current date in Swift 2.0 [duplicate]

问题

This question already has answers here:

How to add minutes to current time in swift (9 answers)

Closed 4 years ago.

How can I reduce 5 or 10 minutes from current time and then store it as date format in Swift 2.0 ?

let now = NSDate()
var reducedTime = ???? \\ Here I want 10 minutes reduced from current time.

If current time is 02:20:00, then reducedTime should be 02:10:00 How can I do this in a simplest way ???

回答1:

You can use calendar method dateByAddingUnit and subtract 10 minutes fro the date.

let now = NSDate()

let reducedTime = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)?.dateByAddingUnit(.Minute, value: -10, toDate: now, options: NSCalendarOptions())

来源：https://stackoverflow.com/questions/33025860/how-to-reduce-few-minutes-for-current-date-in-swift-2-0