ios-uikit-architecture

MVVM architecture separates UIKit presentation logic from business logic by organizing code into View, ViewModel, and Model layers. The ViewModel handles state and logic, the View displays data, and the Model manages business rules. This separation improves testability and maintainability in UIKit projects.

The Coordinator pattern manages navigation flow by centralizing screen transitions in separate objects rather than embedding navigation logic in view controllers. This approach decouples screens, simplifies testing, and makes feature modules easier to reuse and recombine.

Dependency injection passes required dependencies through initializers rather than creating them inside components. In UIKit, inject view models, services, and coordinators into view controllers at creation time, enabling mock objects for testing and flexible component composition.

Yes. MVVM and Coordinator patterns work with UIKit-integrated SwiftUI by maintaining consistent separation of concerns across both frameworks. SwiftUI views bind to shared ViewModels, and Coordinators manage navigation for both UIKit and SwiftUI screens in the same app.

MVVM combined with Coordinators and dependency injection provides clear boundaries for feature modules. Each module owns its screens, ViewModels, and Coordinator, with dependencies injected at module creation, enabling independent development and testing of features.

Separate UI layout code into dedicated View classes that configure constraints programmatically, keeping ViewControllers focused on orchestration. Inject these Views and bind them to ViewModel outputs, maintaining the separation of concerns across layout, presentation, and business logic.