| name | apple-translation |
| description | On-device translation: Translation framework, system translation sheet, TranslationSession API, language detection. Use when adding text translation, language switching, or on-device ML translation features. Triggers: Translation, TranslationSession, translate, language, translationTask. |
Apple Translation
APPLE ON-DEVICE TRANSLATION (Translation framework):
FRAMEWORK: import Translation (iOS 17.4+, on-device, NO internet required, NO API key)
KEY DISTINCTION: Translation is for translating USER CONTENT on demand (e.g. translating a message from French to English). It is NOT for app localization (.strings files). Do not confuse the two.
MODIFIER APPROACH (simplest — shows system translation sheet):
@State private var showTranslation = false
Text(userContent)
.translationPresentation(isPresented: $showTranslation, text: userContent)
Button("Translate") { showTranslation = true }
PROGRAMMATIC TRANSLATION (TranslationSession):
@State private var translatedText = ""
func translateText(_ input: String) async {
let config = TranslationSession.Configuration(source: .init(identifier: "fr"), target: .init(identifier: "en"))
let session = TranslationSession(configuration: config)
do {
let response = try await session.translate(input)
translatedText = response.targetText
} catch {
// Handle: language pair not supported on device, model not downloaded
}
}
// Call with .task or Button:
.task { await translateText(originalText) }
SUPPORTED LANGUAGES: Check Translation.supportedLanguages for the device's available language pairs.
AVAILABILITY: Some language pairs require a model download on first use.
NO ENTITLEMENTS NEEDED: Translation framework requires no special entitlements or Info.plist keys.
