ios-patterns

SwiftUI MVVM architecture with async/await is implemented by using @Observable ViewModels for typed state handling, separating domain use cases from data repositories, and building URLSession API clients to manage structured concurrency workflows in production iOS apps.

Handling SwiftUI navigation state requires using NavigationStack and NavigationPath to manage routing. This approach fits modern iOS UI development by enabling consistent view composition and type-safe navigation routing across scalable application features.

SwiftData persistence in iOS 17+ is set up by integrating it as a modern alternative to Core Data within a clean architecture. This involves wiring SwiftData into your data access layer while maintaining robust error handling and separation from domain models.

Testing SwiftUI features involves structuring unit, snapshot, and UI tests around @Observable ViewModels and repository protocols. This testing approach ensures behavior remains stable during iteration by validating loading, error, and success state flows.

Yes, this iOS architecture pattern supports separating domain use cases from URLSession API clients. It structures repositories with protocol and implementation separation, enabling testable and maintainable features that rely on external API networking.

You should use SwiftData instead of Core Data when building offline-friendly SwiftUI apps targeting iOS 17+. SwiftData provides a modern persistence alternative that integrates natively with modern Swift concurrency and clean layering patterns.