两个时间戳之间的天数

I want to get number of days between two timestamps but I am getting wrong value using this code.

我想获得两个时间戳之间的天数,但是使用此代码我得到了错误的值。

Code :

    let currentDateTimeStamp = Date().timeIntervalSince1970 * 1000.0
    let firstDate = Date.init(timeIntervalSince1970: currentDateTimeStamp)
    let lastDate = Date.init(timeIntervalSince1970: individualCellData["joining_date"] as! TimeInterval) 
// First Method using extension
    let daysBetween = firstDate.interval(ofComponent: .day, fromDate: lastDate)
// Second method
    let components = Calendar.current.dateComponents([.day], from: lastDate, to: firstDate)

    extension Date {
        func interval(ofComponent comp: Calendar.Component, fromDate date: Date) -> Int {

            let currentCalendar = Calendar.current
            guard let start = currentCalendar.ordinality(of: comp, in: .era, for: date) else { return 0 }
            guard let end = currentCalendar.ordinality(of: comp, in: .era, for: self) else { return 0 }
            return end - start
        }
     }

I am getting timestamp from server in milliseconds. What is the correct way ?

我在几毫秒内从服务器获取时间戳。什么是正确的方法?

1 个解决方案

#1

let date1 = NSDate(timeIntervalSince1970: 1507211263)//Thursday, 5 October 2017 13:47:43
let date2 = NSDate(timeIntervalSince1970: 1507556863)//Monday, 9 October 2017 13:47:43

var secondsBetween: TimeInterval = date2.timeIntervalSince(date1 as Date)
var numberOfDays = Int(secondsBetween / 86400)
print("There are \(numberOfDays) days in between the two dates.")

//FYI: 86400 seconds = 24 hr

// FYI:86400秒= 24小时