如何快速增加分钟到当前时间

可以使用 Calendar 的方法

func date(byAdding component: Calendar.Component, value: Int, to date: Date, wrappingComponents: Bool = default) -> Date?

将任意 Calendar.Component添加到任意 Date。您可以创建一个 Date 扩展，将 x 分钟添加到 UIDatePicker的日期:

Xcode 8 and Xcode 9• Swift 3.0 and Swift 4.0

extension Date {
func adding(minutes: Int) -> Date {
return Calendar.current.date(byAdding: .minute, value: minutes, to: self)!
}
}

然后，您可以使用扩展方法向发送方(UIDatePicker)添加分钟:

let section1 = sender.date.adding(minutes: 5)
let section2 = sender.date.adding(minutes: 10)

游乐场测试:

Date().adding(minutes: 10)  //  "Jun 14, 2016, 5:31 PM"

有两种方法:

1. 使用 Calendar和 date(byAdding:to:wrappingComponents:)，例如，在 Swift 3和更高版本中:

   let calendar = Calendar.current
   let date = calendar.date(byAdding: .minute, value: 5, to: startDate)
   

2. Just use + operator (see +(_:_:)) to add a TimeInterval (i.e. a certain number of seconds). E.g. to add five minutes, you can:

   let date = startDate + 5 * 60
   

   (注意，这里的顺序是特定的: +左边的日期和右边的秒。)

   如果你愿意，你也可以使用 addingTimeInterval:

   let date = startDate.addingTimeInterval(5 * 60)
   

Bottom line, +/addingTimeInterval is easiest for simple scenarios, but if you ever want to add larger units (e.g., days, months, etc.), you would likely want to use the calendrical calculations because those adjust for daylight savings, whereas addingTimeInterval doesn’t.

For Swift 2 renditions, see the previous revision of this answer.

你可以使用 NSDateComponents进行日期算术。例如:

import Foundation


let comps = NSDateComponents()


comps.minute = 5


let cal = NSCalendar.currentCalendar()


let r = cal.dateByAddingComponents(comps, toDate: NSDate(), options: nil)

这是你在操场上看到的

NSDate.init与 timeIntervalSinceNow:
例如:

 let dateAfterMin = NSDate.init(timeIntervalSinceNow: (minutes * 60.0))

保存这个小扩展:

extension Int {


var seconds: Int {
return self
}


var minutes: Int {
return self.seconds * 60
}


var hours: Int {
return self.minutes * 60
}


var days: Int {
return self.hours * 24
}


var weeks: Int {
return self.days * 7
}


var months: Int {
return self.weeks * 4
}


var years: Int {
return self.months * 12
}
}

然后直观地使用它，比如:

let threeDaysLater = TimeInterval(3.days)
date.addingTimeInterval(threeDaysLater)

斯威夫特3:

let minutes: TimeInterval = 1 * 60
let nowPlusOne = Date() + minutes

斯威夫特4:

let date = startDate.addingTimeInterval(TimeInterval(5.0 * 60.0))

let date = startDate.addingTimeInterval(TimeInterval(-5.0 * 60.0))

// subtract 5 minutes from date
transportationFromDate.addTimeInterval(TimeInterval(-5.0 * 60.0))