Swift 转换时间到时间之前

Question

在 Swift5 中，我们有 RelativeDateTimeFormatter

Swift5 之前的版本：

我正在尝试将时间转换为以前的时间，我想做的是：

从 1 到 15 秒它会说“刚刚”

从 60 分钟到 119 分钟，它会说“一个小时前”

从 24 小时到 47 小时它会说“昨天”

从 7 天到 7 天 23 小时它会说“一周前”

我不确定我的计数是否错误，请随时为我修正

这是代码

    extension NSDate {

    struct Date {
        static let timeFormatter: NSDateFormatter = {
            let df = NSDateFormatter()
            df.calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
            df.dateFormat = "h:mm a"
            return df
            }()
    }
    var time: String { return Date.timeFormatter.stringFromDate(self) }

    var year:    Int { return NSCalendar.autoupdatingCurrentCalendar().component(.Year,   fromDate: self) }
    var month:   Int { return NSCalendar.autoupdatingCurrentCalendar().component(.Month,  fromDate: self) }
    var day:     Int { return NSCalendar.autoupdatingCurrentCalendar().component(.Day,    fromDate: self) }
    var hour:     Int { return NSCalendar.autoupdatingCurrentCalendar().component(.Hour,    fromDate: self) }
    var minute:     Int { return NSCalendar.autoupdatingCurrentCalendar().component(.Minute,    fromDate: self) }
    var second:     Int { return NSCalendar.autoupdatingCurrentCalendar().component(.Second,    fromDate: self) }


    struct DateComponents {
        static let formatter: NSDateComponentsFormatter = {
            let dcFormatter = NSDateComponentsFormatter()
            dcFormatter.calendar = NSCalendar(identifier: NSCalendarIdentifierISO8601)!
            dcFormatter.unitsStyle = .Full
            dcFormatter.maximumUnitCount = 1
            dcFormatter.zeroFormattingBehavior = .Default
            dcFormatter.allowsFractionalUnits = false
            dcFormatter.allowedUnits = [.Year, .Month, .Weekday, .Day, .Hour, .Minute, .Second]
            return dcFormatter
            }()
    }

    var elapsedTime: String {


        if isecond(NSDate()) {
            return "Just now"

        }

        if ishour(NSDate()) {
           return "an hour ago"

        }
        if isyesterday(NSDate()) {
            return "Yesterday"
        }
        if isweek(NSDate()) {

            return "a week ago"
        }




        return (DateComponents.formatter.stringFromTimeInterval(NSDate().timeIntervalSinceDate(self)) ?? "") + " ago"
    }
    func isyesterday(date: NSDate) -> Bool {
        return  NSCalendar.autoupdatingCurrentCalendar().isDate(self, inSameDayAsDate: date.yesterday)
    }
    var yesterday: NSDate {
        return  NSCalendar.autoupdatingCurrentCalendar().dateWithEra(1, year: year, month: month, day: day-1, hour: 0, minute: 0, second: 0, nanosecond: 0)!
    }



    func isweek(date: NSDate) -> Bool {
        return  NSCalendar.autoupdatingCurrentCalendar().isDate(self, inSameDayAsDate: date.weekago)
    }
    var weekago: NSDate {
        return  NSCalendar.autoupdatingCurrentCalendar().dateWithEra(1, year: year, month: month, day: day-7, hour: 0, minute: 0, second: 0, nanosecond: 0)!
    }

    func isecond(date: NSDate) -> Bool {
        return  NSCalendar.autoupdatingCurrentCalendar().isDate(self, inSameDayAsDate: date.secondsago)
    }
    var secondsago: NSDate {
        return  NSCalendar.autoupdatingCurrentCalendar().dateWithEra(1, year: year, month: month, day: 0, hour: 0, minute: 0, second: second-15, nanosecond: 0)!
    }

    func ishour(date: NSDate) -> Bool {
        return  NSCalendar.autoupdatingCurrentCalendar().isDate(self, inSameDayAsDate: date.hourago)
    }
    var hourago: NSDate {
        return  NSCalendar.autoupdatingCurrentCalendar().dateWithEra(1, year: year, month: month, day: 0, hour: hour-1, minute: minute-1, second: 0, nanosecond: 0)!
    }
}

这是我在我的应用程序中得到的：

"an hour ago"、“刚才”等引号没有显示，只显示“昨天”，我不确定是否只有 7 天到 23 小时！

这是我的第一个问题 link：

请帮我修改代码，感谢@Leo Dabus 提供的代码。

Answer 1

根据需要更改文本。

extension NSDate {

    func getElapsedInterval() -> String {

        var interval = NSCalendar.currentCalendar().components(.Year, fromDate: self, toDate: NSDate(), options: []).year

        if interval > 0 {
            return interval == 1 ? "\(interval)" + " " + "year" :
            "\(interval)" + " " + "years"
        }

        interval = NSCalendar.currentCalendar().components(.Month, fromDate: self, toDate: NSDate(), options: []).month
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " " + "month" :
            "\(interval)" + " " + "months"
        }

        interval = NSCalendar.currentCalendar().components(.Day, fromDate: self, toDate: NSDate(), options: []).day
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " " + "day" :
            "\(interval)" + " " + "days"
        }

        interval = NSCalendar.currentCalendar().components(.Hour, fromDate: self, toDate: NSDate(), options: []).hour
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " " + "hour" :
            "\(interval)" + " " + "hours"
        }

        interval = NSCalendar.currentCalendar().components(.Minute, fromDate: self, toDate: NSDate(), options: []).minute
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " " + "minute" :
            "\(interval)" + " " + "minutes"
        }

        return "a moment ago"
    }
}

Answer 2

我将更新 Truongky 对 Swif 3 的回答：

extension Date {

func getElapsedInterval() -> String {

    let interval = Calendar.current.dateComponents([.year, .month, .day], from: self, to: Date())

    if let year = interval.year, year > 0 {
        return year == 1 ? "\(year)" + " " + "year ago" :
            "\(year)" + " " + "years ago"
    } else if let month = interval.month, month > 0 {
        return month == 1 ? "\(month)" + " " + "month ago" :
            "\(month)" + " " + "months ago"
    } else if let day = interval.day, day > 0 {
        return day == 1 ? "\(day)" + " " + "day ago" :
            "\(day)" + " " + "days ago"
    } else {
        return "a moment ago"

    }

}
}

如果您更喜欢可本地化的响应而不是仅使用英语，则此代码可以完成工作

extension Date {
func getElapsedInterval() -> String {

    var calendar = Calendar.current
    calendar.locale = Locale(identifier: Bundle.main.preferredLocalizations[0]) 
// IF THE USER HAVE THE PHONE IN SPANISH BUT YOUR APP ONLY SUPPORTS I.E. ENGLISH AND GERMAN
// WE SHOULD CHANGE THE LOCALE OF THE FORMATTER TO THE PREFERRED ONE 
// (IS THE LOCALE THAT THE USER IS SEEING THE APP), IF NOT, THIS ELAPSED TIME 
// IS GOING TO APPEAR IN SPANISH

    let formatter = DateComponentsFormatter()
    formatter.unitsStyle = .full
    formatter.maximumUnitCount = 1
    formatter.calendar = calendar

    var dateString: String?

    let interval = calendar.dateComponents([.year, .month, .weekOfYear, .day], from: self, to: Date())

    if let year = interval.year, year > 0 {
        formatter.allowedUnits = [.year] //2 years
    } else if let month = interval.month, month > 0 {
        formatter.allowedUnits = [.month] //1 month
    } else if let week = interval.weekOfYear, week > 0 {
        formatter.allowedUnits = [.weekOfMonth] //3 weeks
    } else if let day = interval.day, day > 0 {
        formatter.allowedUnits = [.day] // 6 days
    } else {
        let dateFormatter = DateFormatter()
        dateFormatter.locale = Locale(identifier: Bundle.main.preferredLocalizations[0]) //--> IF THE USER HAVE THE PHONE IN SPANISH BUT YOUR APP ONLY SUPPORTS I.E. ENGLISH AND GERMAN WE SHOULD CHANGE THE LOCALE OF THE FORMATTER TO THE PREFERRED ONE (IS THE LOCALE THAT THE USER IS SEEING THE APP), IF NOT, THIS ELAPSED TIME IS GOING TO APPEAR IN SPANISH
        dateFormatter.dateStyle = .medium
        dateFormatter.doesRelativeDateFormatting = true

        dateString = dateFormatter.string(from: self) // IS GOING TO SHOW 'TODAY'
    }

    if dateString == nil {
        dateString = formatter.string(from: self, to: Date())
    }

    return dateString!
}

Answer 3

Swift 3 版本 :

extension Date {

    var timeAgoSinceNow: String {
        return getTimeAgoSinceNow()
    }

    private func getTimeAgoSinceNow() -> String {

        var interval = Calendar.current.dateComponents([.year], from: self, to: Date()).year!
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " year" : "\(interval)" + " years"
        }

        interval = Calendar.current.dateComponents([.month], from: self, to: Date()).month!
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " month" : "\(interval)" + " months"
        }

        interval = Calendar.current.dateComponents([.day], from: self, to: Date()).day!
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " day" : "\(interval)" + " days"
        }

        interval = Calendar.current.dateComponents([.hour], from: self, to: Date()).hour!
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " hour" : "\(interval)" + " hours"
        }

        interval = Calendar.current.dateComponents([.minute], from: self, to: Date()).minute!
        if interval > 0 {
            return interval == 1 ? "\(interval)" + " minute" : "\(interval)" + " minutes"
        }

        return "a moment ago"
    }
}

Answer 4

使用 Date 而不是 NSDate：Answer taking from:

func timeAgoSinceDate(_ date:Date, numericDates:Bool = false) -> String {
    let calendar = NSCalendar.current
    let unitFlags: Set<Calendar.Component> = [.minute, .hour, .day, .weekOfYear, .month, .year, .second]
    let now = Date()
    let earliest = now < date ? now : date
    let latest = (earliest == now) ? date : now
    let components = calendar.dateComponents(unitFlags, from: earliest,  to: latest)

    if (components.year! >= 2) {
        return "\(components.year!) years ago"
    } else if (components.year! >= 1){
        if (numericDates){
            return "1 year ago"
        } else {
            return "Last year"
        }
    } else if (components.month! >= 2) {
        return "\(components.month!) months ago"
    } else if (components.month! >= 1){
        if (numericDates){
            return "1 month ago"
        } else {
            return "Last month"
        }
    } else if (components.weekOfYear! >= 2) {
        return "\(components.weekOfYear!) weeks ago"
    } else if (components.weekOfYear! >= 1){
        if (numericDates){
            return "1 week ago"
        } else {
            return "Last week"
        }
    } else if (components.day! >= 2) {
        return "\(components.day!) days ago"
    } else if (components.day! >= 1){
        if (numericDates){
            return "1 day ago"
        } else {
            return "Yesterday"
        }
    } else if (components.hour! >= 2) {
        return "\(components.hour!) hours ago"
    } else if (components.hour! >= 1){
        if (numericDates){
            return "1 hour ago"
        } else {
            return "An hour ago"
        }
    } else if (components.minute! >= 2) {
        return "\(components.minute!) minutes ago"
    } else if (components.minute! >= 1){
        if (numericDates){
            return "1 minute ago"
        } else {
            return "A minute ago"
        }
    } else if (components.second! >= 3) {
        return "\(components.second!) seconds ago"
    } else {
        return "Just now"
    }

}

使用方法

var createdDate : String = "123232323" //time stamp
var createdDataDisplayString: String {
    let date = Date(timeIntervalSince1970: Double(self.createdDate)!).timeAgoSinceDate(numericDates: true)
    return "\(date)"
}
print(self.createdDataDisplayString)

Answer 5

Swift 4.1。在函数参数中传递日期，函数将 return 过去。

func getPastTime(for date : Date) -> String {

    var secondsAgo = Int(Date().timeIntervalSince(date))
    if secondsAgo < 0 {
        secondsAgo = secondsAgo * (-1)
    }

    let minute = 60
    let hour = 60 * minute
    let day = 24 * hour
    let week = 7 * day

    if secondsAgo < minute  {
        if secondsAgo < 2{
            return "just now"
        }else{
            return "\(secondsAgo) secs ago"
        }
    } else if secondsAgo < hour {
        let min = secondsAgo/minute
        if min == 1{
            return "\(min) min ago"
        }else{
            return "\(min) mins ago"
        }
    } else if secondsAgo < day {
        let hr = secondsAgo/hour
        if hr == 1{
            return "\(hr) hr ago"
        } else {
            return "\(hr) hrs ago"
        }
    } else if secondsAgo < week {
        let day = secondsAgo/day
        if day == 1{
            return "\(day) day ago"
        }else{
            return "\(day) days ago"
        }
    } else {
        let formatter = DateFormatter()
        formatter.dateFormat = "MMM dd, hh:mm a"
        formatter.locale = Locale(identifier: "en_US")
        let strDate: String = formatter.string(from: date)
        return strDate
    }
}

Answer 6

Swift 4+ 版本

extension Date {

    func timeAgoSinceDate() -> String {

        // From Time
        let fromDate = self

        // To Time
        let toDate = Date()

        // Estimation
        // Year
        if let interval = Calendar.current.dateComponents([.year], from: fromDate, to: toDate).year, interval > 0  {

            return interval == 1 ? "\(interval)" + " " + "year ago" : "\(interval)" + " " + "years ago"
        }

        // Month
        if let interval = Calendar.current.dateComponents([.month], from: fromDate, to: toDate).month, interval > 0  {

            return interval == 1 ? "\(interval)" + " " + "month ago" : "\(interval)" + " " + "months ago"
        }

        // Day
        if let interval = Calendar.current.dateComponents([.day], from: fromDate, to: toDate).day, interval > 0  {

            return interval == 1 ? "\(interval)" + " " + "day ago" : "\(interval)" + " " + "days ago"
        }

        // Hours
        if let interval = Calendar.current.dateComponents([.hour], from: fromDate, to: toDate).hour, interval > 0 {

            return interval == 1 ? "\(interval)" + " " + "hour ago" : "\(interval)" + " " + "hours ago"
        }

        // Minute
        if let interval = Calendar.current.dateComponents([.minute], from: fromDate, to: toDate).minute, interval > 0 {

            return interval == 1 ? "\(interval)" + " " + "minute ago" : "\(interval)" + " " + "minutes ago"
        }

        return "a moment ago"
    }
}

用法

yourDate.timeAgoSinceDate()

Answer 7

我的需求比较简单，要么"now"要么"x ago"

从 iOS 8 开始，您可以使用 (NS)DateComponentsFormatter

func getElapsedInterval() -> String {

    let formatter = DateComponentsFormatter()
    formatter.allowedUnits = [.minute, .hour, .day, .month, .year]
    formatter.unitsStyle = .abbreviated
    formatter.zeroFormattingBehavior = .dropAll
    formatter.maximumUnitCount = 1

    var dateString: String?

    if self.timeIntervalSince(Date()) > -60*5 {
        dateString = NSLocalizedString("now", comment: "")
    } else {
        dateString = String.init(format: NSLocalizedString("%@ ago", comment: ""), locale: .current, formatter.string(from: self, to: Date())!)
    }

    return dateString ?? ""
}

例如

var date = Date.init(timeIntervalSinceNow: -60)
print(date.getElapsedInterval())
date = Date.init(timeIntervalSinceNow: -60*10)
print(date.getElapsedInterval())
date = Date.init(timeIntervalSinceNow: -60*60)
print(date.getElapsedInterval())
date = Date.init(timeIntervalSinceNow: -60*60*24)
print(date.getElapsedInterval())
date = Date.init(timeIntervalSinceNow: -60*60*24*30)
print(date.getElapsedInterval())
date = Date.init(timeIntervalSinceNow: -60*60*24*31*12)
print(date.getElapsedInterval())

现在
10m 前
1小时前
1 天前
1个月前
1 年前

Answer 8

您需要在您的助手 class 或 swift 文件中的任何文件中添加此日期扩展。 Swift 4.2。如果你想在 swift 3 中取消注释行并注释下一行。

调用方法如下：

 let dateText = Date().offsetFrom(date: yourDate!)

yourDate 是要更改的日期

////MARK: *************** Extension Date ***************
 extension Date{


func convertToString(validDateFormatter:String) -> String {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = validDateFormatter //"dd MMM yyyy" //yyyy-mm-dd hh:mm
    //return dateFormatter.stringFromDate(self)
    return dateFormatter.string(from: self as Date)

}

func yearsFrom(date:Date) -> Int{
    //        return NSCalendar.currentCalendar.components(.Year, fromDate: date, toDate: self, options: []).year
    //        let calendar = NSCalendar.current

    //        let components = Calendar.current.dateComponents([.year], from: date, to: self as Date)

    return Calendar.current.dateComponents([.year], from: date, to: self).year!

}
func monthsFrom(date:Date) -> Int{
    //        return NSCalendar.currentCalendar.components(.Month, fromDate: date, toDate: self, options: []).month
    return Calendar.current.dateComponents([.month], from: date as Date, to: self).month!
}
func weeksFrom(date:Date) -> Int{
    //return NSCalendar.currentCalendar.components(.WeekOfYear, fromDate: date, toDate: self, options: []).weekOfYear
    return Calendar.current.dateComponents([.weekOfYear], from: date, to: self).weekOfYear!
}
func daysFrom(date:Date) -> Int{
    //        return NSCalendar.currentCalendar.components(.Day, fromDate: date, toDate: self, options: []).day
    return Calendar.current.dateComponents([.day], from: date, to: self).day!
}
func hoursFrom(date:Date) -> Int{
    //        return NSCalendar.currentCalendar.components(.Hour, fromDate: date, toDate: self, options: []).hour
    return Calendar.current.dateComponents([.hour], from: date, to: self).hour!
}
func minutesFrom(date:Date) -> Int{
    //        return NSCalendar.currentCalendar.components(.Minute, fromDate: date, toDate: self, options: []).minute
    return Calendar.current.dateComponents([.minute], from: date, to: self).minute!
}
func secondsFrom(date:Date) -> Int{
    //        return NSCalendar.currentCalendar.components(.Second, fromDate: date, toDate: self, options: []).second
    return Calendar.current.dateComponents([.second], from: date, to: self).second!
}
func offsetFrom(date:Date) -> String
{
    if yearsFrom(date: date) > 0 {
        return "\(yearsFrom(date: date))y"
    }
    if monthsFrom(date: date) > 0 {
        return "\(monthsFrom(date: date))M"
    }
    if weeksFrom(date: date) > 0{
        return "\(weeksFrom(date: date))w"
    }
    if daysFrom(date: date) > 0 {
        return "\(daysFrom(date: date))d"
    }
    if hoursFrom(date: date) > 0 {
        return "\(hoursFrom(date: date))h"
    }
    if minutesFrom(date: date) > 0 {
        return "\(minutesFrom(date: date))m"
    }
    if secondsFrom(date: date) > 0 {
        return "\(secondsFrom(date: date))s"
    }
    return ""

}

}

Answer 9

这里有解决办法，你可以复制粘贴

 func timeAgoSinceDate(_ date:Date, numericDates:Bool = false) -> String? {
    let calendar = NSCalendar.current
    let unitFlags: Set<Calendar.Component> = [.minute, .hour, .day, .weekOfYear, .month, .year, .second]
    let now = Date()
    let earliest = now < date ? now : date
    let latest = (earliest == now) ? date : now
    let components = calendar.dateComponents(unitFlags, from: earliest,  to: latest)

    if (components.year! >= 2) {
        return "\(components.year!)yr"
    } else if (components.year! >= 1){
        if (numericDates){
            return "1yr"
        } else {
            return "Last year"
        }
    } else if (components.month! >= 2) {
        return "\(components.month!)mo"
    } else if (components.month! >= 1){
        if (numericDates){
            return "1 mo"
        } else {
            return "Last mo"
        }
    } else if (components.weekOfYear! >= 2) {
        return "\(components.weekOfYear!) weeks"
    } else if (components.weekOfYear! >= 1){
        if (numericDates){
            return "1 week"
        } else {
            return "Last week"
        }
    } else if (components.day! >= 2) {
        return "\(components.day!) d"
    } else if (components.day! >= 1){
        if (numericDates){
            return "1 d"
        } else {
            return "1 d"
        }
    } else if (components.hour! >= 2) {
        return "\(components.hour!) hrs"
    } else if (components.hour! >= 1){
        if (numericDates){
            return "1 hr"
        } else {
            return "1 hr"
        }
    } else if (components.minute! >= 2) {
        return "\(components.minute!) m"
    } else if (components.minute! >= 1){
        if (numericDates){
            return "1 m"
        } else {
            return "2 m"
        }
    } else if (components.second! >= 3) {
        return "\(components.second!)s"
    } else {
        return "now"
    }

}

调用，只需使用

    // the date you are getting information about 
let dateToReference = Date()
            if let timeAgo = timeAgoSinceDate(dateToReference) {
                //will be a String value
                print(timeAgo)

            } else {
                //just in case something goes wrong
                print("recently")

            }

Answer 10

Swift 4 版

并且现在不为 TimeEnd 添加可选。

extension Date {

    func getElapsedInterval(to end: Date = Date()) -> String {

        if let interval = Calendar.current.dateComponents([Calendar.Component.year], from: self, to: end).day {
            if interval > 0 {
                return "\(interval) year\(interval == 1 ? "":"s")"
            }
        }

        if let interval = Calendar.current.dateComponents([Calendar.Component.month], from: self, to: end).month {
            if interval > 0 {
                return "\(interval) month\(interval == 1 ? "":"s")"
            }
        }

        if let interval = Calendar.current.dateComponents([Calendar.Component.weekOfMonth], from: self, to: end).weekOfMonth {
            if interval > 0 {
                return "\(interval) week\(interval == 1 ? "":"s")"
            }
        }

        if let interval = Calendar.current.dateComponents([Calendar.Component.day], from: self, to: end).day {
            if interval > 0 {
                return "\(interval) day\(interval == 1 ? "":"s")"
            }
        }

        if let interval = Calendar.current.dateComponents([Calendar.Component.hour], from: self, to: end).hour {
            if interval > 0 {
                return "\(interval) hour\(interval == 1 ? "":"s")"
            }
        }

        if let interval = Calendar.current.dateComponents([Calendar.Component.minute], from: self, to: end).minute {
            if interval > 0 {
                return "\(interval) minute\(interval == 1 ? "":"s")"
            }
        }

        return "Just now."
    }

}

Answer 11

On Swift 5 使用 RelativeDateTimeFormatter，

let formatter = RelativeDateTimeFormatter()

formatter.localizedString(from: DateComponents(day: -1)) // "1 day ago"
formatter.localizedString(from: DateComponents(hour: 2)) // "in 2 hours"
formatter.localizedString(from: DateComponents(minute: 45)) // "in 45 minutes"

设置 dateTimeStyle 获取本地化指示语句，例如-

formatter.dateTimeStyle = .named 
formatter.localizedString(from: DateComponents(day: -1)) // "yesterday"

Answer 12

对于swift5.x

extension Date {

    func timeAgoSinceDate() -> String {

        // From Time
        let fromDate = self

        // To Time
        let toDate = Date()

        // Year
        if let interval = Calendar.current.dateComponents([.year], from: fromDate, to: toDate).year, interval > 0  {

            return interval == 1 ? "\(interval)" + " " + "year ago" : "\(interval)" + " " + "years ago"
        }

        // Month
        if let interval = Calendar.current.dateComponents([.month], from: fromDate, to: toDate).month, interval > 0  {

            return interval == 1 ? "\(interval)" + " " + "month ago" : "\(interval)" + " " + "months ago"
        }

        // Day
        if let interval = Calendar.current.dateComponents([.day], from: fromDate, to: toDate).day, interval > 0  {

            return interval == 1 ? "\(interval)" + " " + "day ago" : "\(interval)" + " " + "days ago"
        }

        // Hours
        if let interval = Calendar.current.dateComponents([.hour], from: fromDate, to: toDate).hour, interval > 0 {

            return interval == 1 ? "\(interval)" + " " + "hour ago" : "\(interval)" + " " + "hours ago"
        }

        // Minute
        if let interval = Calendar.current.dateComponents([.minute], from: fromDate, to: toDate).minute, interval > 0 {

            return interval == 1 ? "\(interval)" + " " + "minute ago" : "\(interval)" + " " + "minutes ago"
        }

        return "just now"
    }
}

使用方法

oldDate.timeAgoSinceDate()

Answer 13

与接受的答案相似，字符串处理更清晰：

extension Date
{
    func getElapsedInterval() -> String
    {
        let interval = Calendar.current.dateComponents([.year, .month, .day], from: self, to: Date())
        
        if let yearsPassed = interval.year,
            yearsPassed > 0
        {
            return "\(yearsPassed) year\(yearsPassed == 1 ? "" : "s") ago"
        }
        else if let monthsPassed = interval.month,
            monthsPassed > 0
        {
            return "\(monthsPassed) month\(monthsPassed == 1 ? "" : "s") ago"
        }
        else if let daysPassed = interval.day,
            daysPassed > 0
        {
            return "\(daysPassed) day\(daysPassed == 1 ? "" : "s") ago"
        }
        
        return "a moment ago"
    }
}

Swift 转换时间到时间之前

Swift convert time to time ago

nsdate

parse-platform

swift