How to get current language code with Swift

Question

I want get the language code of the device  en  es     in my app written with Swift  How can get this   I m trying this   var preferredLanguages   NSLocale  let pre   preferredLanguages displayNameForKey NSLocaleIdentifier  value  preferredLanguages    But this returns nil

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swift 3  let preferredLanguage   Locale preferredLanguages 0  as String print  preferredLanguage    en-US  let arr   preferredLanguage components separatedBy   -   let deviceLanguage   arr first print  deviceLanguage    en

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Swift 3  amp  4  amp  4 2  amp  5  Locale current languageCode does not compile regularly  Because you did not implemented localization for your project    You have two possible solutions  1  String Locale preferredLanguages 0  prefix 2    It returns phone lang properly   If you want to get the type en-En  you can use Locale preferredLanguages 0   2  Select Project MyApp - Project  not Target -  press   button into Localizations  then add language which you want

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Locale current languageCode returns me wrong code  so I use these extensions   extension Locale       static var preferredLanguageCode  String           let defaultLanguage    en          let preferredLanguage   preferredLanguages first    defaultLanguage         return Locale identifier  preferredLanguage  languageCode    defaultLanguage            static var preferredLanguageCodes   String            return Locale preferredLanguages compactMap  Locale identifier   0  languageCode

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To get current language used in your app  different than preferred languages   NSLocale currentLocale   objectForKey NSLocaleLanguageCode

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In Swift  You can get the locale using   let locale   Locale current identifier

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Swift 4  amp  5   Locale current languageCode

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This is what I use in Swift 5 Xcode 11  Inside the class variables  let languagePrefix   Bundle main preferredLocalizations first  prefix 2   This comes as a string  It returns 2 characters  i e   quot en quot    quot es quot    quot de quot     From this I can easily determine what language to display   if languagePrefix     quot es quot    self flipCard setTitle  quot   ltima carta quot   for   normal     if languagePrefix     quot en quot    self flipCard setTitle  quot Last Card quot   for   normal     If you want the full information of the language  then remove   prefex 2

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Swift 5 3  let languagePrefix   Locale preferredLanguages 0  print languagePrefix

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you may use the below code it works fine with swift 3  var preferredLanguage   String   Bundle main preferredLocalizations first

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It s important to make the difference between the App language and the device locale language  The code below is in Swift 3   Will return the Device language   let locale   NSLocale current languageCode   Will return the App language   let pre   Locale preferredLanguages 0

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In Swift 3  let langStr   Locale current languageCode

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In Swift 3   NSLocale current languageCode

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I want to track the language chosen by the user in Settings app every time the user launches my app - that is not yet localized  my app is in English only   I adopted this logic    create an enum to to make it easier to handle the languages in array  enum Language  String    case none      case en    English  case fr    French  case it    Italian        add as many languages you want  create a couple of extension to Locale  extension Locale        static var enLocale  Locale            return Locale identifier   en-EN            to use in   currentLanguage   to get the localizedString in English      static var currentLanguage  Language             guard let code   preferredLanguages first  components separatedBy   -   last else                print  could not detect language code                return nil                    guard let rawValue   enLocale localizedString forLanguageCode  code  else                print  could not localize language code                return nil                    guard let language   Language rawValue  rawValue  else                print  could not init language from raw value                return nil                   print  language    code -  rawValue             return language          When you need  you can simply use the extension  if let currentLanguage   Locale currentLanguage       print currentLanguage rawValue         Your code here

[swift] How to get current language code with Swift?

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