Multi-Module Movies is a The Movie DB project that demonstrates how to build a scalable multi-module architecture for Android apps that use Jetpack Compose.
Add your API key in local.properties file.
tmdb_api_key=API_KEYLearn more about this project from the publications linked below.
- Navigating through multi-module Jetpack Compose applications blog post at ProAndroidDev
- Scalable multi-module architecture for Jetpack Compose apps talk at Android Worldwide
The codebase is written in Kotlin language with Jetpack Compose as a primary UI framework.
In addition, the following technologies are used in the project:
- Compose Paging - for displaying paginated UI lists.
- Coil - for loading images.
- Compose Navigation - for navigating between features.
- Kotlin Coroutines - for concurrency.
- Dagger - for dependency injection.
- Retrofit - for networking.
- Room - for persistence and offline mode.
The project implements a scalable multi-module architecture that aims to achieve the following goals:
- Separation of concerns - strict isolation and separation of logic between features for easier testability and maintainability of a codebase.
- Scalability - the architecture is applicable for projects that use hundreds or thousands Gradle/Bazel modules.
- Dependency graph optimization - allows keeping a developer productivity on a decent level by preventing long build times and ensuring efficient incremental builds.
All the project modules could be separated into 3 types:
- Feature modules - which hold a logic related to a specific feature and consist of API and Impl modules. Former are framework-agnostic and hold lightweight interfaces as feature entry points.
- Library modules - commonly used logic by other features.
- Injector modules - modules that build a dependency graph of the app. E.g. app module.
