检查日期是否介于 2 个日期之间 [英] Check if date falls between 2 dates

问题描述

我有将字符串转换为日期对象的代码

I have this code where convert a String into a date object

let date2 = KeysData[indexPath.row]["starttime"] as? String

let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"

if let date = dateFormatter.dateFromString(date2!) {
   println(date)          
}

我想知道当前日期是否介于我在数组 startdate 和 endate

I would like to know if the current date falls between the 2 days i got in the array startdate and endate

推荐答案

Swift 2

有关更好的答案，请参阅 Swift ≧ 3.

您已经拥有将 KeysData 中的日期字符串转换为 NSDate 的代码.假设您在 startdate 和 enddate 中有两个日期，您所要做的就是检查当前日期是否介于两者之间:

You already have the code for conversion of your date string in KeysData to NSDate. Assuming you have the two dates in startdate and enddate, all you have to do is check if the current date is in between:

let startDate = ...
let endDate = ...

NSDate().isBetween(date: startDate, andDate: endDate)

extension NSDate {
    func isBetweeen(date date1: NSDate, andDate date2: NSDate) -> Bool {
        return date1.compare(self) == self.compare(date2)
    }
}

如果要执行包含范围检查，请使用以下条件:

If you want to perform an inclusive range check, use this condition:

 extension NSDate {
    func isBetween(date date1: NSDate, andDate date2: NSDate) -> Bool {
        return date1.compare(self).rawValue * self.compare(date2).rawValue >= 0
    }
}

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