An Android template project following a multi module approach with clean architecture. It has been built following Clean Architecture Principle, Repository Pattern, MVVM Architecture in the presentation layer as well as jetpack components.

I created this repository to demonstrate best development practices by utilizing up to date tech-stack.

The purpose of this app to showcase:

• Implementation of Jetpack Android Architecture components with Dagger Hilt to minimize boilerplate code.
• Implementation of Modular Multi Module Navigation Architecture.

• Operating System : Android
• Programming Language: Kotlin
• Architecture : MVVM and Data Binding
• Dependency Injection : Hilt
• Fragment Management : Navigation Component
• Design : Material Design 3

1. Android Studio : Arctic Fox | 2020.3.1 3.1 or higher
2. Android Emulator or Physical android device

• Complex architectures like the pure clean architecture can also increase code complexity since decoupling your code also means creating lots of data transformations(mappers) and models, that may end up increasing the learning curve of your code to a point where it would be better to use a simpler architecture like MVVM.

A well planned architecture is extremely important for an app to scale and all architectures have one common goal- to manage complexity of your app. This isn't something to be worried about in smaller apps however it may prove very useful when working on apps with longer development lifecycle and a bigger team.

Clean architecture was proposed by Robert C. Martin in 2012 in the Clean Code Blog and it follow the SOLID principle.

The circles represent different layers of your app. Note that:

• The center circle is the most abstract, and the outer circle is the most concrete. This is called the Abstraction Principle. The Abstraction Principle specifies that inner circles should contain business logic, and outer circles should contain implementation details.

• Another principle of Clean Architecture is the Dependency Inversion. This rule specifies that each circle can depend only on the nearest inward circle ie. low-level modules do not depend on high-level modules but the other way around.

• Loose coupling between the code - The code can easily be modified without affecting any or a large part of the app's codebase.
• Easier to test code.
• Separation of Concern - Different modules have specific responsibilities making it easier for modification and maintenance.

• Single Responsibility: Each software component should have only one reason to change – one responsibility.

• Open-Closed: You should be able to extend the behavior of a component, without breaking its usage, or modifying its extensions.

• Liskov Substitution: If you have a class of one type, and any subclasses of that class, you should be able to represent the base class usage with the subclass, without breaking the app.

• Interface Segregation: It’s better to have many smaller interfaces than a large one, to prevent the class from implementing the methods that it doesn’t need.

• Dependency Inversion: Components should depend on abstractions rather than concrete implementations. Also higher level modules shouldn’t depend on lower level modules.

• GitHub Actions - GitHub actions is used in this project to check for syntax correctness using KtLint, execute the unit tests and generate a new package when pushing changes to the main branch.
• KtLint - The project uses KtLint to check for syntax correctness.
• Detekt - The project uses Detekt for Kotlin Static Analysis.

Files are suffixed with be defined Class types.

• ViewModels are suffixed with VM. Ex: LoginVM
• Repositories are suffixed with Repo. Ex: SampleRepo

There are a few ways to open this project.

1. Android Studio -> File -> New -> From Version control -> Git
2. Enter [email protected]:mbobiosio/ModularAppTemplate.git into URL field an press Clone button 3, Build the project and run on an android device or emulator

1. Run git clone [email protected]:mbobiosio/ModularAppTemplate.git command to clone project
2. Open Android Studio and select File | Open... from the menu. Select cloned directory and press Open button
3. Build the project and run on an android device or emulator

This project is designed to be a barebone template for new apps. This project will continuously receive updates to improve overall codebase and other libraries and techniques to keep it up to date.

• Mbuodile Obiosio
• 

This project is released under the MIT license. See LICENSE for details.

MIT License

Copyright (c) 2022 Mbuodile Obiosio

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