我遇到了从String获取正确日期时间的问题。
let timeStamp = "2018-03-27 21:10:55 PDT"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss zzz"
//Los Angeles is current device timezone
dateFormatter.timeZone = TimeZone.current
let date = dateFormatter.date(from: timeStamp)
print(date) //2018-03-28 04:10:55 +0000
有没有办法可以在设备时区获取日期？例如，我没有得到2018-03-28 04:10:55 +0000，而是希望在设备时区获得时间。
答案 0 :(得分：0)
获取时区：
let timezone = TimeZone.current.identifier
print(timezone)
简短地说：
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
//设置缩写“EST”，“BDT”
formatter.timeZone = TimeZone(abbreviation: "BDT")
//在此处设置您的设备时间
let estDate = formatter.date(from: "2018-03-28 11:28:00")
print("\(estDate!)")
outPut是：
Asia/Dhaka
通过使用此功能，您将获得所有：
let knownTimeZoneIdentifiers = TimeZone.knownTimeZoneIdentifiers
for tz in TimeZone.knownTimeZoneIdentifiers {
let timeZone = TimeZone(identifier: tz)
if let abbreviation = timeZone?.abbreviation(), let seconds = timeZone?.secondsFromGMT() {
print ("timeZone: \(tz) \nabbreviation: \(abbreviation)\nsecondsFromGMT: \(seconds)\n")
}
}
输出：
timeZone: Africa/Abidjan
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Accra
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Addis_Ababa
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Algiers
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Asmara
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Bamako
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Bangui
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Banjul
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Bissau
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Blantyre
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Brazzaville
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Bujumbura
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Cairo
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Casablanca
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Ceuta
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Conakry
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Dakar
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Dar_es_Salaam
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Djibouti
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Douala
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/El_Aaiun
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Freetown
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Gaborone
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Harare
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Johannesburg
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Juba
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Kampala
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Khartoum
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Kigali
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Kinshasa
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Lagos
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Libreville
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Lome
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Luanda
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Lubumbashi
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Lusaka
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Malabo
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Maputo
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Maseru
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Mbabane
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Mogadishu
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Monrovia
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Nairobi
abbreviation: GMT+3
secondsFromGMT: 10800
timeZone: Africa/Ndjamena
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Niamey
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Nouakchott
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Ouagadougou
abbreviation: GMT
secondsFromGMT: 0
timeZone: Africa/Porto-Novo
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Sao_Tome
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Tripoli
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: Africa/Tunis
abbreviation: GMT+1
secondsFromGMT: 3600
timeZone: Africa/Windhoek
abbreviation: GMT+2
secondsFromGMT: 7200
timeZone: America/Adak
abbreviation: HADT
secondsFromGMT: -32400
timeZone: America/Anchorage
abbreviation: AKDT
secondsFromGMT: -28800
timeZone: America/Anguilla
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Antigua
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Araguaina
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Buenos_Aires
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Catamarca
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Cordoba
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Jujuy
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/La_Rioja
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Mendoza
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Rio_Gallegos
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Salta
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/San_Juan
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/San_Luis
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Tucuman
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Argentina/Ushuaia
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Aruba
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Asuncion
abbreviation: GMT-4
secondsFromGMT: -14400
timeZone: America/Atikokan
abbreviation: EST
secondsFromGMT: -18000
timeZone: America/Bahia
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Bahia_Banderas
abbreviation: CST
secondsFromGMT: -21600
timeZone: America/Barbados
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Belem
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Belize
abbreviation: CST
secondsFromGMT: -21600
timeZone: America/Blanc-Sablon
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Boa_Vista
abbreviation: GMT-4
secondsFromGMT: -14400
timeZone: America/Bogota
abbreviation: GMT-5
secondsFromGMT: -18000
timeZone: America/Boise
abbreviation: MDT
secondsFromGMT: -21600
timeZone: America/Cambridge_Bay
abbreviation: MDT
secondsFromGMT: -21600
timeZone: America/Campo_Grande
abbreviation: GMT-4
secondsFromGMT: -14400
timeZone: America/Cancun
abbreviation: EST
secondsFromGMT: -18000
timeZone: America/Caracas
abbreviation: GMT-4
secondsFromGMT: -14400
timeZone: America/Cayenne
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Cayman
abbreviation: EST
secondsFromGMT: -18000
timeZone: America/Chicago
abbreviation: CDT
secondsFromGMT: -18000
timeZone: America/Chihuahua
abbreviation: GMT-7
secondsFromGMT: -25200
timeZone: America/Costa_Rica
abbreviation: CST
secondsFromGMT: -21600
timeZone: America/Creston
abbreviation: MST
secondsFromGMT: -25200
timeZone: America/Cuiaba
abbreviation: GMT-4
secondsFromGMT: -14400
timeZone: America/Curacao
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Danmarkshavn
abbreviation: GMT
secondsFromGMT: 0
timeZone: America/Dawson
abbreviation: PDT
secondsFromGMT: -25200
timeZone: America/Dawson_Creek
abbreviation: MST
secondsFromGMT: -25200
timeZone: America/Denver
abbreviation: MDT
secondsFromGMT: -21600
timeZone: America/Detroit
abbreviation: EDT
secondsFromGMT: -14400
timeZone: America/Dominica
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Edmonton
abbreviation: MDT
secondsFromGMT: -21600
timeZone: America/Eirunepe
abbreviation: GMT-5
secondsFromGMT: -18000
timeZone: America/El_Salvador
abbreviation: CST
secondsFromGMT: -21600
timeZone: America/Fort_Nelson
abbreviation: MST
secondsFromGMT: -25200
timeZone: America/Fortaleza
abbreviation: GMT-3
secondsFromGMT: -10800
timeZone: America/Glace_Bay
abbreviation: ADT
secondsFromGMT: -10800
timeZone: America/Godthab
abbreviation: GMT-2
secondsFromGMT: -7200
timeZone: America/Goose_Bay
abbreviation: ADT
secondsFromGMT: -10800
timeZone: America/Grand_Turk
abbreviation: EDT
secondsFromGMT: -14400
timeZone: America/Grenada
abbreviation: AST
secondsFromGMT: -14400
timeZone: America/Guadeloupe
abbreviation: AST
secondsFromGMT: -14400