我如何计算两个日期之间的天数？

Question

嗨希望有人能帮助我。我需要计算日期之间的天数。流量是：

选择一个日期
新的年份日期（例如 2 年）
获取 "pick date" 和 "New date"

Answer 1

试试这个代码，为 Swift 2.0

更新

let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"

let first = "2010-09-01"
let firstDate = dateFormatter.dateFromString(first)!
let last = "2010-09-05"
let lastDate = dateFormatter.dateFromString(last)!

let currentCalendar = NSCalendar.currentCalendar()
let timeUnitDay = NSCalendarUnit.Day

let daysBetween = currentCalendar.components(timeUnitDay, fromDate: firstDate, toDate: lastDate, options: NSCalendarOptions.MatchStrictly)

print(daysBetween.day)

我如何计算两个日期之间的天数？

How can i calculate the days between two dates?

xcode

nsdate

swift