Android Architecture Kotlin + Dagger2 + Room + LiveData + Retrofit

Project contributors: Nazar Ivanchuk & Roman Havran

Summary

This sample stands on the principles of Android Architecture.

It's based on the MVC sample, splitting the application in four layers:

Layers responsibilities

UI Controller (Activities, Fragments & Custom views)

• Activities & Fragments
• Observes the ViewModel
• Keeps the UI up-to-date
• Forwards user Actions back to the ViewModel

ViewModel

• Prepares & keeps data for the UI
• Includes LiveData, Observables etc.
• Survives configuration changes
• The gateway for the UI Controller

Repository

• The complete data model from the App  - Provides simple data modification & retrieval APIs

Data Source

• Provides local or network sources for data

Maintainability

ViewModel concept makes application more flexible for support