Multi Module Architecture in Android
Today, I am going to talk about multi-module architecture, why we use it and how we implementing it.
Multi Module architecture is unlike a monolithic approach, where the entire application is bundled into a single module, multi-module architecture breaks down the application into smaller, manageable, and reusable modules. These modules can be features, layers, or even standalone libraries. This approach not only streamlines the development process but also enhances maintainability and scalability.
Why we use it?
Enhanced Maintainability
Modular systems enable simplified updates and easier debugging. It allow for specific sections of a program to be updated or fixed without having to rebuild every aspect of the whole application. Identifying and resolving bugs becomes more manageable when dealing with smaller, isolated modules.
Improved Scalability
In terms of flexibility, new modules can be seamlessly integrated into the existing structure, allowing the software to grow and adapt. Also, for resource efficiency, modularity enables the allocation of resources to specific modules that require scaling, rather than the entire application.
Increased Development Speed
Different teams can work on separate modules simultaneously, reducing the overall development time. Moreover, modularity allows for quicker prototyping and testing of individual components, speeding up the iteration process.
Reusability of Code
Modules can be reused in different parts of the same application or even across different projects, saving time and effort in development. Furthermore, reusable modules help in standardizing features and functionalities across various applications.
Reduced Complexity
Developers can focus on a specific module without being overwhelmed by the complexity of the entire system. Also, new team members can more easily understand the functionality of a system when it is broken down into smaller, self-contained units.
Better Risk Management
In a modular system, we encounter more like isolated failure. In other words, failure in one module is less likely to impact the entire system. If a particular module update fails, it can be rolled back without affecting other parts of the application.
Implementing Multi-Module Architecture in Android
Setting Up
Create a New Project
Identify Modules -> For instance, authentication, user_profile,
Create Modules File > New > New Module
Choose the module type such as Android Library
Configure Settings -> In the project’s settings.gradle file, include your newly created modules. For example, include ':app', ':authentication'
Configure Module-Level build.gradle
Define Dependencies ->Each module’s build.gradle must specify its dependencies.
Add Module Dependencies -> For example, implementation project(':authentication') in user_profile
Designing Module Interfaces
Define Interfaces to interacts with other modules like through public classes, methods, or data models.
Implementing Features in Modules
Implement the features of each module independently.
Integrating Modules into the Main Application
In the main app module (app), integrate the feature modules by adding them as dependencies in the build.gradle file.
Handling Resource Management
If multiple modules use common resources, consider creating a common module to hold these shared resources.
Managing App-Wide Dependencies
Centralize Dependency Versions ->Use a root-level build.gradle or a separate Gradle file to manage common dependency versions across modules. For libraries used across multiple modules, add them to your root build.gradle or a base module to ensure consistency.
Testing and Debugging
Module-Level Testing ->tests on individual modules
Application-Wide Testing->testing on the entire application to ensure all modules interact seamlessly.
Building and Deployment
- Use build system to compile and build the complete application.
Conclusion
Implementing a multi-module architecture in Android can significantly enhance the scalability, maintainability, and flexibility of your application. By using it, you can effectively organize your code, streamline the development process, and create a robust and modular Android application.
