Android Clean Architecture
Clean Architecture in Android: layers, use cases, repository pattern, and SOLID principles
1What are the 3 main layers of Clean Architecture?
What are the 3 main layers of Clean Architecture?
Answer
Clean Architecture consists of 3 layers: Presentation (UI, ViewModels), Domain (Use Cases, business entities), and Data (repositories, data sources). Each layer has its responsibility and depends only on inner layers.
2What is a Use Case in Clean Architecture?
What is a Use Case in Clean Architecture?
Answer
A Use Case (or Interactor) is a class that encapsulates a single business action of the application. It contains business logic specific to a use case and orchestrates Repository calls. Example: LoginUseCase, GetUserProfileUseCase.
3What is the Repository pattern?
What is the Repository pattern?
Answer
Repository is an abstraction providing an interface for data access, hiding the actual source (API, local DB, cache). It coordinates different data sources and returns Domain entities. It centralizes data access logic.
What are the types of Data Sources in Clean Architecture?
What is the difference between Domain Models and Data Models?
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