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 : NSL         


        

Answer 1

In Swift, You can get the locale using.

let locale = Locale.current.identifier

Answer 2

To get current language used in your app (different than preferred languages)

NSLocale.currentLocale().objectForKey(NSLocaleLanguageCode)!

Answer 3

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

Answer 4

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. "en", "es", "de"...

From this I can easily determine what language to display:

 if languagePrefix == "es" { self.flipCard.setTitle("última carta", for: .normal) }
 if languagePrefix == "en" { self.flipCard.setTitle("Last Card", for: .normal) }

If you want the full information of the language, then remove ?.prefex(2)

Answer 5

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:

1. 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
   

2. 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
       }
   }
   

3. When you need, you can simply use the extension

   if let currentLanguage = Locale.currentLanguage {
       print(currentLanguage.rawValue)
       // Your code here.
   }
   

Answer 6

Swift 4 & 5:

Locale.current.languageCode