pod 'LocalizedSwift'

From Xcode, select File → Swift Packages → Add Package Dependency → Select your project → Search LocalizedSwift

It is possible to localize a class that conforms Localizable adding @Localized("YouKey") before the component declaration. UILabel, UIButton, UITextField and UIImageView already conform Localizable.

// In the following example the string for the key "Label.Title" will be searched in the file "Localizable.strings".
@Localized("Label.Title")
@IBOutlet private var label: UILabel!

If the strings are defined in a file different from Localizable.strings set the parameter stringsFileName with the name of the file.

// In the following example the string for the key "Label.Title" will be searched in the file "AFile.strings".
@Localized("Label.Title", stringsFileName: "AFile") 
@IBOutlet private var label: UILabel!

If the .strings file is in a bundle other than .main set the parameter bundle with the bundle where the file is embedded.

// In the following example the string for the key "Label.Title" will be searched in the file "AFile.strings" in the bundle `.anotherBundle`.
@Localized("Label.Title", stringsFileName: "AFile", bundle: .anotherBundle) 
@IBOutlet private var label: UILabel!

It is possible to set different localized strings for different UIControl.State using the declaration @Localized(.key(, for:), .key(, for:) ..., stringsFileName:, bundle:).

The method .key(:, for: ) is a factory method to instantiate the object that associate a key to a state LocalizedConfiguration.

// In the following example the string for the key "Button.Title" will be set for the normal state and the string for the key "Button.Highlighted.Title" will be set for the highlighted state.
@Localized(.key("Button.Title", for: .normal),
           .key("Button.Highlighted.Title", for: .highlighted))
@IBOutlet private var button: UIButton!

It is possible to set stringsFileName and bundle just like in the examples above.

Made with ❤️ and ☕️ by @MarioIannotta