If You Want to Implement i18n on iOS and Dynamically Switch Languages in the App, This is a Great Library
If you’re working on i18n for iOS and need to dynamically switch languages within the app, you can use this package: Localize-Swift. Recently, I worked on an i18n feature and compiled some related resources here.
Installation
Using CocoaPods
pod 'Localize-Swift'
Using Swift Package Manager
dependencies: [
.package(url: "https://github.com/marmelroy/Localize-Swift.git", .upToNextMajor(from: "3.2.0"))
]
Usage
/// Import the library wherever you need multilingual support
import Localize_Swift
Add .localized() to any string object you want to translate:
textLabel.text = "Hello World".localized()
Get an array of available languages:
Localize.availableLanguages()
Change the current language:
Localize.setCurrentLanguage("fr")
If you need to update the UI in a view controller to handle language changes, observe LCLLanguageChangeNotification:
NotificationCenter.default.addObserver(self, selector: #selector(setText), name: NSNotification.Name(LCLLanguageChangeNotification), object: nil)
Reset the language back to the app’s default:
Localize.resetCurrentLanguageToDefault()
Beyond Localizable.strings: Now You Can Use xcstrings
While working on development, I noticed that when adding a new strings file, there was a “deprecated” label, along with a new xcstrings option. After doing some research, I discovered this was introduced at WWDC 2023. The format looks quite similar to Android’s multilingual GUI interface. Below is the related video. Once I get to use this in a real project, I’ll write another blog post about it.