Can you list the main architectural patterns used for organizing the user interface layer?

Main architectural patterns for organizing the user interface layer in Flutter:

• MVC (Model-View-Controller): separates application logic into model, view, and controller.
• MVVM (Model-View-ViewModel): separates UI from business logic through ViewModel, simplifying testing.
• BLoC (Business Logic Component): uses streams to manage state and separate business logic from UI.
• Provider: a simple way to manage state using dependency injection.

For example, BLoC helps manage state through events and states, making the code more predictable and scalable.