Example architecture for a scalable modular Android application with gradle modules and dagger 2.

This example project gices you a rough idea how can build a scalable Android application and is an attempt to solve so following situation.

The given scenario: You are developing with many other developers on one Android app.

Question:

• Speed?
• Team Size?
• Scalable?
• Merge conflicts?
• Separation?
• Testing?
• Buildtime?

Answer: Modularization! It is possible to split your app into several gradle modules. Each module can have their own responsibility and can be developed nearly independently.

This project is developed with the following approach.

We have four main modules: app, core, features and shared.

• app-module is the starting point and creates the dagger graph. It also provides the communication between the features, because this module knows all of them.
• features-module contains several sub modules with each feature. Each feature is developed with MVP and talks with interactors.
• core-module has also several submodules, which are providing data to the features. Interactors, services, etc. are located here.
• shared-module provides submodules with libraries, interfaces, services etc. which are used by every other module.