'Language codes to friendly names

I have a language code, such as "en_US", and I'm trying to get a friendly name from it such as "English".

Here's what I'm doing right now:

Locale.current.localizedString(forLanguageCode: code)

It works, but for languages such as Chinese, it doesn't quite do what I want.

zh-Hans should return "Simplified Chinese", and zh-Hant should return "Traditional Chinese".

However, they both just return "Chinese". How would you get them to return the correct values?

swiftmacoslocalization


Solution 1:[1]

You can use NSLocale's displayName(forKey:value:) instead.

let code = "en_US"
if let identifier = (Locale.current as NSLocale).displayName(forKey: .identifier, value: code) {
    print(identifier) /// English (United States)
}

let code = "zh_Hans"
if let identifier = (Locale.current as NSLocale).displayName(forKey: .identifier, value: code) {
    print(identifier) /// Chinese, Simplified
}

Solution 2:[2]

"en_US" is not a language code, it's a locale identifier consisting of the language code "en" and the region code "US". Thus, calling into localizedString(forLanguageCode:) will not work properly. With an identifier (like you have), use localizedString(forIdentifier:):

let identifier = "en_US"
let humanReadableName = 
    Locale.current.localizedString(forIdentifier: identifier) ?? identifier

This also works nicely with identifiers such as zh-Hans which will return "Chinese, Simplified".

Note that I'm suggesting to append ?? identifier at the end because localizedString(forIdentifier:) returns an Optional in case of an invalid identifier where you can fall back to the identifier itself so you don't have to deal with an Optional String.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 aheze
Solution 2 Jeehut

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