SwiftUI iOS Localization Tutorial: Master String Catalogs in Xcode 16

Do you want to localize your iPhone app and iOS Widgets? In this step-by-step SwiftUI tutorial, I’ll show you how to extend the Sleep Tracker widget from my previous video and use Xcode 16’s new String Catalogs to translate your UI into multiple languages. You’ll also learn how to preview on both the Simulator and in SwiftUI Previews so you can QA your translations before shipping.

I’m Paul Solt, a former Apple engineer, and my SwiftUI code powers the GoPro Quik app (I worked closely with GoPro’s localization team). Grab the starter project and follow along below!

#Localizations #SwiftUI #StringCatalog #i18n #localize #translate #languages #spanish #english #widget