Introduction to Kotlin Modular TDD Coroutines MVVM Project
The Kotlin Modular TDD Coroutines MVVM project is a sample application that demonstrates modern approaches to Android development using Kotlin and the latest technology stack. This project aims to showcase best practices, offer guidelines, and present a modular, scalable, maintainable, and testable Android application architecture.
Project Overview
This project serves as a template for building robust Android applications. By incorporating various small details, it lays down a rock-solid foundation suitable for larger applications with extensive team involvement and long-term lifecycle management. The project uses the TvMaze API, providing real-world data to showcase the application's capabilities.
Development Environment
To start working on this project, one needs the latest Android Studio (3.5 or newer). It involves setting up the environment, including signing configurations for release builds. A crucial aspect of development resides in maintaining code style and quality using static analysis tools like detekt, ktlint, spotless, and lint.
Design
The application is designed to support different screen sizes, adapting to mobile devices and tablets. It employs Android Material Design for a consistent user experience across platforms. Notably, the app includes a dark theme, benefiting users in low-light environments and improving energy efficiency on certain devices.
Architecture
The project's architecture is based on key principles and patterns:
- Android Architecture Components: Ensures a robust, testable, and maintainable design.
- MVVM Pattern: Promotes separation of concerns within the application.
- S.O.L.I.D Principles: Aids in making software designs flexible and understandable.
- Modular Architecture: Allows independent development of features in isolation.
Modules
The project is divided into distinct modules, each serving a specific function:
- App Module: Handles the application bundle creation and initiates global libraries and settings.
- Base Module: Contains shared code and resources used across different modules.
- Data Module: Manages network requests and database access.
- Domain Module: Bridges the data and view layers, executing business logic.
- Test Shared Module: Provides test utilities for various modules.
Architecture Components
The project utilizes ViewModels that ideally shouldn't be aware of Android-specific components, thereby improving testability and modularity. The communication between layers is facilitated through a reactive paradigm, enhancing efficiency and reducing the risk of memory leaks.
Technical Stack
The project uses a range of popular Android libraries, plugins, and tools. Focusing on Kotlin, the project also incorporates patterns and practices such as Repository Pattern, Observer Pattern, UseCase Pattern, Delegation Pattern, and Test-Driven Development (TDD). The technical stack includes Jetpack components, Coroutines for asynchronous tasks, Dagger2 for dependency injection, and other libraries like Retrofit2, Glide, Gson, and Timber for various functionalities.
Test Dependencies
The project ensures reliability through robust testing frameworks and libraries like Espresso for UI testing, JUnit for unit testing, Mockito for mocking, and more. These tools facilitate thorough testing strategies to ensure code quality and functionality.
Plugins
The integration of tools like ktlint, detekt, spotless, and jacoco augment the project's code quality and maintainability by enforcing coding standards and analyzing coverage.
Resources and Contributions
For those interested in further exploration or contributing, the project offers an array of resources including similar projects, enlightening articles, and best practices in Android development. Contributions are welcome, aligning with the project's roadmap and licensing under the MIT license.
This project is a comprehensive take on modern Android application development, equipping developers with the essential tools and patterns necessary for building scalable and maintainable applications.