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Example Android project using MVVM, DaggerAndroid, Jetpack Compose, Retrofit, Coroutines and Multi module architecture ✌🏽

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Praxis

2022 Hit Refresh! Praxis now loves ❀️ Jetpack Compose


This is a sample app written in Kotlin following clean architecture principles which uses slack app features as an example.

The purpose of this app to showcase:

  • Implementation of Jetpack Android Architecture components with Dagger Hilt and Data Binding to minimize boilerplate code.
  • Implementation of an architecture that will support both XML and the new Compose.
  • Implementation of Modular Multi Module Navigation Architecture.
  • Performing background task with Kotlin Coroutines

Requirements

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

Built With πŸ—

Tools Link
πŸ€– Kotlin Kotlin
πŸ› Architecture Components Android Architecture Components
β›“ Data Binding Android Data Binding
πŸ’‰ Dagger Hilt Dagger Hilt
🌐 Retrofit Retrofit
🚦 OkHttp OkHttp
πŸ“„ Gson Parsing Gson
🌊 Coroutines Kotlin Coroutines
πŸ„πŸΌβ€β™€οΈ Flows Flows

Architecture

Praxis follows the principles of Clean Architecture with Android Architecture Components.

Architecture's layers & boundaries:

Presentation Layer contains UI (Activities & Fragments) that are coordinated by ViewModels which execute 1 or multiple UseCases. Presentation Layer depends on Domain Layer.

Domain Layer is the most INNER part of the circle (no dependencies with other layers) and it contains Entities, Use cases & Repository Interfaces. Use cases combine data from 1 or multiple Repository Interfaces.

Data Layer contains Repository Implementations and 1 or multiple Data Sources. Repositories are responsible to coordinate data from the different Data Sources. Data Layer depends on Domain Layer.

Notes: Mapping between response models and transformed models will happen via extension functions defined in transformed model file

Conventions:

Files are suffixed with be defined Class types.

  • ViewModels are suffixed with VM. Ex: LoginVM
  • UseCases are suffixed with UseCase. Ex: LoginUseCase
  • Sources are suffixed with Source. Ex: LoginRemoteSource, LoginLocalSource
  • Repositories are suffixed with Repo. Ex: LoginRepo

Conclusion

This project can be used as a template for new apps. This project is continually evolving to integrate other libraries and techniques to keep it up to date.

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