试试下面的日期格式。

let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZZZ"
let date = dateFormatter. dateFromString (strDate)

希望能有所帮助。

Swift 4.1:

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZZZ"
let date = dateFormatter.date(from: strDate)

从iOS 15.0开始，我们可以更快速地将字符串转换为日期:

let strategy = Date.ParseStrategy(format: "\(year: .defaultDigits)-\(month: .twoDigits)-\(day: .twoDigits)T\(hour: .twoDigits(clock: .twentyFourHour, hourCycle: .zeroBased)):\(minute: .twoDigits):\(second: .twoDigits)\(timeZone: .iso8601(.short))", timeZone: .current)
let date = try? Date("2016-04-14T10:44:00+0000", strategy: strategy)

请使用ISO8601解析库来执行此操作。编码字符串的方法太多了。不要依赖于特定的格式，也不要依赖于始终发送相同的服务器。问题从末尾的“Z”开始，它将扩展到标准的所有品种。解析库将处理所有情况，并始终提供安全转换——而固定格式化字符串在将来可能会失败。

您可以使用这些库之一。CococaPods上也有:

https://github.com/boredzo/iso-8601-date-formatter/

https://github.com/malcommac/SwiftDate

看一下实现。它们都有几百行——这是有原因的。

关于这个问题:你可以使用NSDateComponents从日期中提取日期组件。网站上的例子正好符合你的情况。

https://developer.apple.com/documentation/foundation/nscalendar/1414841-components?language=objc

请注意，转换日期时会考虑到时区。你可能想显式地设置NSCalendar的locale。

试试下面的日期格式。

let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZZZ"
let date = dateFormatter. dateFromString (strDate)

希望能有所帮助。

Swift 4.1:

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZZZ"
let date = dateFormatter.date(from: strDate)

在swift中使用字符串扩展将字符串转换为日期 Swift - 5.0

    extension String {
         public enum DateFormatType {
        
        /// The ISO8601 formatted year "yyyy" i.e. 1997
        case isoYear
        
        /// The ISO8601 formatted year and month "yyyy-MM" i.e. 1997-07
        case isoYearMonth
        
        /// The ISO8601 formatted date "yyyy-MM-dd" i.e. 1997-07-16
        case isoDate
        
        /// The ISO8601 formatted date and time "yyyy-MM-dd'T'HH:mmZ" i.e. 1997-07-16T19:20+01:00
        case isoDateTime
        
        /// The ISO8601 formatted date, time and sec "yyyy-MM-dd'T'HH:mm:ssZ" i.e. 1997-07-16T19:20:30+01:00
        case isoDateTimeSec
        
        /// The ISO8601 formatted date, time and millisec "yyyy-MM-dd'T'HH:mm:ss.SSSZ" i.e. 1997-07-16T19:20:30.45+01:00
        case isoDateTimeMilliSec
        
        /// The dotNet formatted date "/Date(%d%d)/" i.e. "/Date(1268123281843)/"
        case dotNet
        
        /// The RSS formatted date "EEE, d MMM yyyy HH:mm:ss ZZZ" i.e. "Fri, 09 Sep 2011 15:26:08 +0200"
        case rss
        
        /// The Alternative RSS formatted date "d MMM yyyy HH:mm:ss ZZZ" i.e. "09 Sep 2011 15:26:08 +0200"
        case altRSS
        
        /// The http header formatted date "EEE, dd MM yyyy HH:mm:ss ZZZ" i.e. "Tue, 15 Nov 1994 12:45:26 GMT"
        case httpHeader
        
        /// A generic standard format date i.e. "EEE MMM dd HH:mm:ss Z yyyy"
        case standard
        
        /// A custom date format string
        case custom(String)
        
        /// The local formatted date and time "yyyy-MM-dd HH:mm:ss" i.e. 1997-07-16 19:20:00
        case localDateTimeSec
        
        /// The local formatted date  "yyyy-MM-dd" i.e. 1997-07-16
        case localDate
        
        /// The local formatted  time "hh:mm a" i.e. 07:20 am
        case localTimeWithNoon
        
        /// The local formatted date and time "yyyyMMddHHmmss" i.e. 19970716192000
        case localPhotoSave
        
        case birthDateFormatOne
        
        case birthDateFormatTwo
        
        ///
        case messageRTetriveFormat
        
        ///
        case emailTimePreview
        
        var stringFormat:String {
          switch self {
          //handle iso Time
          case .birthDateFormatOne: return "dd/MM/YYYY"
          case .birthDateFormatTwo: return "dd-MM-YYYY"
          case .isoYear: return "yyyy"
          case .isoYearMonth: return "yyyy-MM"
          case .isoDate: return "yyyy-MM-dd"
          case .isoDateTime: return "yyyy-MM-dd'T'HH:mmZ"
          case .isoDateTimeSec: return "yyyy-MM-dd'T'HH:mm:ssZ"
          case .isoDateTimeMilliSec: return "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
          case .dotNet: return "/Date(%d%f)/"
          case .rss: return "EEE, d MMM yyyy HH:mm:ss ZZZ"
          case .altRSS: return "d MMM yyyy HH:mm:ss ZZZ"
          case .httpHeader: return "EEE, dd MM yyyy HH:mm:ss ZZZ"
          case .standard: return "EEE MMM dd HH:mm:ss Z yyyy"
          case .custom(let customFormat): return customFormat
            
          //handle local Time
          case .localDateTimeSec: return "yyyy-MM-dd HH:mm:ss"
          case .localTimeWithNoon: return "hh:mm a"
          case .localDate: return "yyyy-MM-dd"
          case .localPhotoSave: return "yyyyMMddHHmmss"
          case .messageRTetriveFormat: return "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
          case .emailTimePreview: return "dd MMM yyyy, h:mm a"
          }
        }  
 }
        
 func toDate(_ format: DateFormatType = .isoDate) -> Date?{
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = format.stringFormat
        let date = dateFormatter.date(from: self)
        return date 
  }
 }

我们用like

    string.toDate(.isoDate)
    "1997-05-24".toDate(.isoDate)

嗨，你有单独的T格式，然后转换为你喜欢

// create dateFormatter with UTC time format
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let date = dateFormatter.dateFromString("2015-04-01T11:42:00")

// change to a readable time format and change to local time zone
dateFormatter.dateFormat = "EEE, MMM d, yyyy - h:mm a"
dateFormatter.timeZone = NSTimeZone.localTimeZone() 
let timeStamp = dateFormatter.stringFromDate(date!)