Android application that displays a list of images with description. The data for these images is fetched from this API. Demo Video

The app uses Clean Architecture principles + MVVM Pattern, for a clear separation of concerns across these layers:

Focused on data management, it uses:

• Room Database for local data storage.
• Retrofit2 for API interactions.

Components include:

• Repositories
• Mappers
• Local data storage modules
• Remote data retrieval modules

Encapsulates the app's core logic and functionalities with:

• Use cases (e.g., Fetching a list of images)
• Domain models
• Data repository interfaces

Handles the user interface and interactions with:

• ViewModels for UI logic.
• UI Screens designed using Jetpack Compose.
• Utility functions.
• Reusable UI components also built with Jetpack Compose.

The app handles configuration changes like screen rotations using:

• ViewModel: Ensure that ViewModel retains data across configuration changes. Also, annotated with @HiltViewModel, which means it's managed by Hilt and will survive configuration changes.
• State: using StateFlow and MutableState to manage the state in the ViewModel.
• Jetpack Compose: Provides a more intuitive way to handle UI state without the complexities of traditional Android UI development.

The application integrates a variety of libraries:

• Room: Database operations.
• Dagger/Hilt: Dependency injection.
• Retrofit2 + GsonConverter: API interactions and JSON data processing.
• Coroutine: Asynchronous operations.
• Jetpack Compose/Material3: UI development.
• Coil: Image loading in Jetpack Compose.
• JUnit and Mockito: Unit testing and data mocking.

Unit tests are in place to validate the app's functionality:

• ViewModels
• common and Utils

• Load data using pagination
• Persist data into local database only when there is new update (e.g; condition based on a dateTime value returned with api that contains last update time)