［已解决］swift把NSDate时间变成时间戳

//: Playground – noun: a place where people can play

import UIKit

extension NSDate {

    //convert time to Int64 timestamp:

    //-> in millisecond -> 13 digits: 1466576142336

    //-> in second      -> 10 digits: 1466576128

    func toTimestamp(toMilliSec:Bool = true) -> Int64 {

        var curTimestamp:Int64 = 0

        print(“self=\(self)”)

        print(“self.timeIntervalSince1970=\(self.timeIntervalSince1970)”)

        //1466576025.00243

        var curTimestampFloat = Float(self.timeIntervalSince1970)

        print(“curTimestampFloat=\(curTimestampFloat)”)

        if toMilliSec {

            curTimestampFloat = curTimestampFloat * 1000

            print(“timestampFloat=\(curTimestampFloat)”)

        }

        curTimestamp = Int64(curTimestampFloat)

        print(“curTimestamp=\(curTimestamp)”)

        //1466576025002

        //1466576025

        return curTimestamp

    }

    func toTimestampInSec() -> Int64 {

        return self.toTimestamp(false)

    }

}

let curTime = NSDate()

print(“curTime=\(curTime)”)

//let timeIntervalInSecFloat:Float = Float(curTime.timeIntervalSince1970)

//print(“timeIntervalInSecFloat=\(timeIntervalInSecFloat)”)

//

//let timeIntervalInMsFloat:Float = timeIntervalInSecFloat * 1000

//print(“timeIntervalInMsFloat=\(timeIntervalInMsFloat)”)

//curTime.toTimestamp(false)

curTime.toTimestamp()

curTime=2016-06-22 06:16:06 +0000

self=2016-06-22 06:16:06 +0000

self.timeIntervalSince1970=1466576166.77657

curTimestampFloat=1.46658e+09

timestampFloat=1.46658e+12

curTimestamp=1466576142336

curTime=2016-06-22 06:18:06 +0000

self=2016-06-22 06:18:06 +0000

self.timeIntervalSince1970=1466576286.4994

curTimestampFloat=1.46658e+09

curTimestamp=1466576256