Bir kullanıcının saat dilimi nasıl alınır?

Swift'de kullanıcıların saat dilimini öğrenmenin bir yolunu bilen var mı?

Bir veri tabanından televizyonda belirli bir zaman alıyorum ve ardından doğru zamanı onlara göstermek için bulundukları yerden çıkarmam / eklemem gerekiyor.

düzenleme / güncelleme:

Xcode 8 veya üzeri • Swift 3 veya üzeri

var secondsFromGMT: Int { return TimeZone.current.secondsFromGMT() }
secondsFromGMT  // -7200

kısaltmaya ihtiyacınız varsa:

var localTimeZoneAbbreviation: String { return TimeZone.current.abbreviation() ?? "" }
localTimeZoneAbbreviation   // "GMT-2"

saat dilimi tanımlayıcısına ihtiyacınız varsa:

var localTimeZoneIdentifier: String { return TimeZone.current.identifier }

localTimeZoneIdentifier // "America/Sao_Paulo"

Mevcut tüm saat dilimleri kısaltmalarını bilmek için:

var timeZoneAbbreviations: [String:String] { return TimeZone.abbreviationDictionary }
timeZoneAbbreviations   // ["CEST": "Europe/Paris", "WEST": "Europe/Lisbon", "CDT": "America/Chicago", "EET": "Europe/Istanbul", "BRST": "America/Sao_Paulo", "EEST": "Europe/Istanbul", "CET": "Europe/Paris", "MSD": "Europe/Moscow", "MST": "America/Denver", "KST": "Asia/Seoul", "PET": "America/Lima", "NZDT": "Pacific/Auckland", "CLT": "America/Santiago", "HST": "Pacific/Honolulu", "MDT": "America/Denver", "NZST": "Pacific/Auckland", "COT": "America/Bogota", "CST": "America/Chicago", "SGT": "Asia/Singapore", "CAT": "Africa/Harare", "BRT": "America/Sao_Paulo", "WET": "Europe/Lisbon", "IST": "Asia/Calcutta", "HKT": "Asia/Hong_Kong", "GST": "Asia/Dubai", "EDT": "America/New_York", "WIT": "Asia/Jakarta", "UTC": "UTC", "JST": "Asia/Tokyo", "IRST": "Asia/Tehran", "PHT": "Asia/Manila", "AKDT": "America/Juneau", "BST": "Europe/London", "PST": "America/Los_Angeles", "ART": "America/Argentina/Buenos_Aires", "PDT": "America/Los_Angeles", "WAT": "Africa/Lagos", "EST": "America/New_York", "BDT": "Asia/Dhaka", "CLST": "America/Santiago", "AKST": "America/Juneau", "ADT": "America/Halifax", "AST": "America/Halifax", "PKT": "Asia/Karachi", "GMT": "GMT", "ICT": "Asia/Bangkok", "MSK": "Europe/Moscow", "EAT": "Africa/Addis_Ababa"]

Mevcut tüm saat dilimleri adlarını (tanımlayıcıları) bilmek için:

var timeZoneIdentifiers: [String] { return TimeZone.knownTimeZoneIdentifiers }
timeZoneIdentifiers           // ["Africa/Abidjan", "Africa/Accra", "Africa/Addis_Ababa", "Africa/Algiers", "Africa/Asmara", "Africa/Bamako", "Africa/Bangui", "Africa/Banjul", "Africa/Bissau", "Africa/Blantyre", "Africa/Brazzaville", "Africa/Bujumbura", "Africa/Cairo", "Africa/Casablanca", "Africa/Ceuta", "Africa/Conakry", "Africa/Dakar", "Africa/Dar_es_Salaam", "Africa/Djibouti", "Africa/Douala", "Africa/El_Aaiun", "Africa/Freetown", "Africa/Gaborone", "Africa/Harare", "Africa/Johannesburg", "Africa/Juba", "Africa/Kampala", "Africa/Khartoum", "Africa/Kigali", "Africa/Kinshasa", "Africa/Lagos", "Africa/Libreville", "Africa/Lome", "Africa/Luanda", "Africa/Lubumbashi", "Africa/Lusaka", "Africa/Malabo", "Africa/Maputo", "Africa/Maseru", "Africa/Mbabane", "Africa/Mogadishu", "Africa/Monrovia", "Africa/Nairobi", "Africa/Ndjamena", "Africa/Niamey", "Africa/Nouakchott", "Africa/Ouagadougou", "Africa/Porto-Novo", "Africa/Sao_Tome", "Africa/Tripoli", "Africa/Tunis", "Africa/Windhoek", "America/Adak", "America/Anchorage", "America/Anguilla", "America/Antigua", "America/Araguaina", "America/Argentina/Buenos_Aires", "America/Argentina/Catamarca", "America/Argentina/Cordoba", "America/Argentina/Jujuy", "America/Argentina/La_Rioja", "America/Argentina/Mendoza", "America/Argentina/Rio_Gallegos", "America/Argentina/Salta", "America/Argentina/San_Juan", "America/Argentina/San_Luis", "America/Argentina/Tucuman", "America/Argentina/Ushuaia", "America/Aruba", "America/Asuncion", "America/Atikokan", "America/Bahia", "America/Bahia_Banderas", "America/Barbados", "America/Belem", "America/Belize", "America/Blanc-Sablon", "America/Boa_Vista", "America/Bogota", …, "Pacific/Marquesas", "Pacific/Midway", "Pacific/Nauru", "Pacific/Niue", "Pacific/Norfolk", "Pacific/Noumea", "Pacific/Pago_Pago", "Pacific/Palau", "Pacific/Pitcairn", "Pacific/Pohnpei", "Pacific/Ponape", "Pacific/Port_Moresby", "Pacific/Rarotonga", "Pacific/Saipan", "Pacific/Tahiti", "Pacific/Tarawa", "Pacific/Tongatapu", "Pacific/Truk", "Pacific/Wake", "Pacific/Wallis"]

İhtiyacınız olabilecek birkaç bilgi daha var:

var isDaylightSavingTime: Bool { return TimeZone.current.isDaylightSavingTime(for: Date()) }
print(isDaylightSavingTime) // true (in effect)

var daylightSavingTimeOffset: TimeInterval { return TimeZone.current.daylightSavingTimeOffset() }
print(daylightSavingTimeOffset)  // 3600 seconds (1 hour - daylight savings time)


var nextDaylightSavingTimeTransition: Date? { return TimeZone.current.nextDaylightSavingTimeTransition }    //  "Feb 18, 2017, 11:00 PM"
 print(nextDaylightSavingTimeTransition?.description(with: .current) ?? "none")
nextDaylightSavingTimeTransition   // "Saturday, February 18, 2017 at 11:00:00 PM Brasilia Standard Time\n"

var nextDaylightSavingTimeTransitionAfterNext: Date? {
    guard
        let nextDaylightSavingTimeTransition = nextDaylightSavingTimeTransition
        else { return nil }
    return TimeZone.current.nextDaylightSavingTimeTransition(after: nextDaylightSavingTimeTransition)
}

nextDaylightSavingTimeTransitionAfterNext  //   "Oct 15, 2017, 1:00 AM"

TimeZone - Apple Developer Swift Belgeleri

Xcode 8.2.1 • Swift 3.0.2

Locale.availableIdentifiers
Locale.isoRegionCodes
Locale.isoCurrencyCodes
Locale.isoLanguageCodes
Locale.commonISOCurrencyCodes

Locale.current.regionCode           // "US"
Locale.current.languageCode         // "en"
Locale.current.currencyCode         // "USD"
Locale.current.currencySymbol       // "$"
Locale.current.groupingSeparator    // ","
Locale.current.decimalSeparator     // "."
Locale.current.usesMetricSystem     // false

Locale.windowsLocaleCode(fromIdentifier: "pt_BR")                   //  1,046
Locale.identifier(fromWindowsLocaleCode: 1046) ?? ""                // "pt_BR"
Locale.windowsLocaleCode(fromIdentifier: Locale.current.identifier) //  1,033 Note: I am in Brasil but I use "en_US" format with all my devices
Locale.windowsLocaleCode(fromIdentifier: "en_US")                                   // 1,033
Locale.identifier(fromWindowsLocaleCode: 1033) ?? ""                                // "en_US"

Locale(identifier: "en_US_POSIX").localizedString(forLanguageCode: "pt")            // "Portuguese"
Locale(identifier: "en_US_POSIX").localizedString(forRegionCode: "br")              // "Brazil"
Locale(identifier: "en_US_POSIX").localizedString(forIdentifier: "pt_BR")           // "Portuguese (Brazil)"

TimeZone.current.localizedName(for: .standard, locale: .current) ?? ""              // "Brasilia Standard Time"
TimeZone.current.localizedName(for: .shortStandard, locale: .current) ?? ""         // "GMT-3
TimeZone.current.localizedName(for: .daylightSaving, locale: .current) ?? ""        // "Brasilia Summer Time"
TimeZone.current.localizedName(for: .shortDaylightSaving, locale: .current) ?? ""   // "GMT-2"
TimeZone.current.localizedName(for: .generic, locale: .current) ?? ""               // "Brasilia Time"
TimeZone.current.localizedName(for: .shortGeneric, locale: .current) ?? ""          // "Sao Paulo Time"

var timeZone: String {
    return TimeZone.current.localizedName(for: TimeZone.current.isDaylightSavingTime() ?
                                               .daylightSaving :
                                               .standard,
                                          locale: .current) ?? "" }

timeZone       // "Brasilia Summer Time"

Mevcut saat dilimini almak için aşağıdaki kodu kullanabilirsiniz

 func getCurrentTimeZone() -> String{

         return TimeZone.current.identifier

  }

  let currentTimeZone = getCurrentTimeZone()
   print(currentTimeZone)

NSTimeZone *timeZone = [NSTimeZone localTimeZone];
NSString *tzName = [timeZone name];

İsim, "Avustralya / Sidney" veya "Avrupa / Lizbon" gibi bir şey olacaktır.

Sadece kıtayı önemsiyormuşsunuz gibi göründüğünden, ihtiyacınız olan tek şey bu olabilir.

Swift 4, 4.2 ve 5

var timeZone : String = String()

override func viewDidLoad() {
    super.viewDidLoad()
    timeZone = getCurrentTimeZone()
    print(timeZone)
}

func getCurrentTimeZone() -> String {
        let localTimeZoneAbbreviation: Int = TimeZone.current.secondsFromGMT()
        let items = (localTimeZoneAbbreviation / 3600)
        return "\(items)"
}