将unix时间转换为日期和时间

My current code:

我现在的代码:

if  let var timeResult = (jsonResult["dt"] as? Double) {
    timeResult = NSDate().timeIntervalSince1970
    println(timeResult)
    println(NSDate())
}

The results:

结果:

println(timeResult) = 1415639000.67457

println(timeResult)= 1415639000.67457

println(NSDate()) = 2014-11-10 17:03:20 +0000 was just to test to see what NSDate was providing.

println(NSDate() = 2014-11-10 17:03:20 +0000只是测试看看NSDate提供了什么。

I want the first to look like the last. The value for dt = 1415637900.

我希望第一个看起来像最后一个。dt的值等于1415637900。

Also, how can I adjust to time zone? Running on iOS.

另外，我如何适应时区?在iOS上运行。

8 个解决方案

#1

You can get a date with that value by using the NSDate(withTimeIntervalSince1970:) initializer:

通过使用NSDate(带有timeintervalsince1970:)初始化器:

let date = NSDate(timeIntervalSince1970: 1415637900)

#2

It's simple to convert the Unix timestamp into the desired format. Lets suppose _ts is the Unix timestamp in long

将Unix时间戳转换为所需的格式很简单。假设_ts是Unix时间戳

let date = NSDate(timeIntervalSince1970: _ts)

let dayTimePeriodFormatter = NSDateFormatter()
dayTimePeriodFormatter.dateFormat = "MMM dd YYYY hh:mm a"

 let dateString = dayTimePeriodFormatter.stringFromDate(date)

  print( " _ts value is \(_ts)")
  print( " _ts value is \(dateString)")

#3

To get the date to show as the current time zone I used the following.

为了获得显示为当前时区的日期，我使用了以下方法。

if  let timeResult = (jsonResult["dt"] as? Double) {
  let date = NSDate(timeIntervalSince1970: timeResult)
  let dateFormatter = NSDateFormatter()
  dateFormatter.timeStyle = NSDateFormatterStyle.MediumStyle //Set time style
  dateFormatter.dateStyle = NSDateFormatterStyle.MediumStyle //Set date style
  dateFormatter.timeZone = NSTimeZone()
  let localDate = dateFormatter.stringFromDate(date)
  self.defaults.setObject(localDate, forKey: "localdate")
}

Swift 3.0 Version

斯威夫特3.0版本

if  let  timeResult = (jsonResult["dt"] as? Double) {
        let date = Date(timeIntervalSince1970: timeResult)
        let dateFormatter = DateFormatter()
        dateFormatter.timeStyle = DateFormatter.Style.medium //Set time style
        dateFormatter.dateStyle = DateFormatter.Style.medium //Set date style
        dateFormatter.timeZone = self.timeZone
        let localDate = dateFormatter.string(from: date)


}

#4

For managing dates in Swift 3 I ended up with this helper function:

对于Swift 3中的日期管理，我最终实现了这个助手功能:

extension Double {
    func getDateStringFromUTC() -> String {
        let date = Date(timeIntervalSince1970: self)

        let dateFormatter = DateFormatter()
        dateFormatter.locale = Locale(identifier: "en_US")
        dateFormatter.dateStyle = .medium

        return dateFormatter.string(from: date)
    }
}

This way it easy to use whenever you need it - in my case it was converting a string:

这样，当你需要它的时候，它很容易使用——在我的例子中，它是在转换一个字符串:

("1481721300" as! Double).getDateStringFromUTC() // "Dec 14, 2016"

Reference the DateFormatter docs for more details on formatting (Note that some of the examples are out of date)

有关格式化的更多细节，请参考DateFormatter文档(请注意，有些示例已经过时)

I found this article to be very helpful as well

我发现这篇文章也很有帮助

#5

func timeStringFromUnixTime(unixTime: Double) -> String {
    let date = NSDate(timeIntervalSince1970: unixTime)

    // Returns date formatted as 12 hour time.
    dateFormatter.dateFormat = "hh:mm a"
    return dateFormatter.stringFromDate(date)
}

func dayStringFromTime(unixTime: Double) -> String {
    let date = NSDate(timeIntervalSince1970: unixTime)
    dateFormatter.locale = NSLocale(localeIdentifier: NSLocale.currentLocale().localeIdentifier)
    dateFormatter.dateFormat = "EEEE"
    return dateFormatter.stringFromDate(date)
}

#6

Here is a working Swift 3 solution from one of my apps.

这是我的一个应用的Swift 3解决方案。

/**
 * 
 * Convert unix time to human readable time. Return empty string if unixtime     
 * argument is 0. Note that EMPTY_STRING = ""
 *
 * @param unixdate the time in unix format, e.g. 1482505225
 * @param timezone the user's time zone, e.g. EST, PST
 * @return the date and time converted into human readable String format
 *
 **/

private func getDate(unixdate: Int, timezone: String) -> String {
    if unixdate == 0 {return EMPTY_STRING}
    let date = NSDate(timeIntervalSince1970: TimeInterval(unixdate))
    let dayTimePeriodFormatter = DateFormatter()
    dayTimePeriodFormatter.dateFormat = "MMM dd YYYY hh:mm a"
    dayTimePeriodFormatter.timeZone = NSTimeZone(name: timezone) as TimeZone!
    let dateString = dayTimePeriodFormatter.string(from: date as Date)
    return "Updated: \(dateString)"
}

#7

Swift:

迅速:

extension Double {
    func getDateStringFromUnixTime(dateStyle: DateFormatter.Style, timeStyle: DateFormatter.Style) -> String {
        let dateFormatter = DateFormatter()
        dateFormatter.dateStyle = dateStyle
        dateFormatter.timeStyle = timeStyle
        return dateFormatter.string(from: Date(timeIntervalSince1970: self))
    }
}

#8

Anyway @Nate Cook's answer is accepted but I would like to improve it with better date format.

无论如何，@Nate Cook的答案是可以接受的，但是我想用更好的日期格式来改进它。

with Swift 2.2, I can get desired formatted date

使用Swift 2.2，我可以得到想要的格式化日期。

//TimeStamp
let timeInterval  = 1415639000.67457
print("time interval is \(timeInterval)")

//Convert to Date
let date = NSDate(timeIntervalSince1970: timeInterval)

//Date formatting
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd, MMMM yyyy HH:mm:a"
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let dateString = dateFormatter.stringFromDate(date)
print("formatted date is =  \(dateString)")

the result is

结果是

time interval is 1415639000.67457

时间间隔是1415639000.67457

formatted date is = 10, November 2014 17:03:PM

格式日期为:2014年11月10日17:03:PM

#1