E-CommerceApp

A Clean Architecture App that uses clean Architecture (app, presentation, domain, data) packages to use coffee items API using MVVM Architecture, Coroutines, Retrofit2, Pagination, Live Data, Data Binding, Hilt , SOLID Principles , Navigation Component , RoomDb.

Introduction

MVVM Architecture

Layers

UI or Presentation Layer

• This layer has all the Android UI components like Activities, Fragments, ViewModels, etc.

Domain Layer

• Contains all the business logic of the app. This layer has no Android components in it.

Data Layer

• All components related to data such as database, networking, api, shared preferences. It is an Android specific layer.

Packages

Presentation Package

• Considered as entery point for the app
• Contains (Activity) that hosts presentation view
• Single Activity App

Domain Package

• Contains business model
• Contains business USECASES
• Repository interface

Data Package

• Repository Implementation
• Executor API data
• Mapper data model to domain model
• Contains data service, third party data service

Presentation Package

• View (Fragment/Layout) Adapt data to view
• Follows MVVM Architecture
• Handling Bussiness Logic from view model by databinding

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