Book Image

Clean Android Architecture

By : Alexandru Dumbravan
Book Image

Clean Android Architecture

By: Alexandru Dumbravan

Overview of this book

As an application’s code base increases, it becomes harder for developers to maintain existing features and introduce new ones. In this clean architecture book, you'll learn to identify when and how this problem emerges and how to structure your code to overcome it. The book starts by explaining clean architecture principles and Android architecture components and then explores the tools, frameworks, and libraries involved. You’ll learn how to structure your application in the data and domain layers, the technologies that go in each layer, and the role that each layer plays in keeping your application clean. You’ll understand how to arrange the code into these two layers and the components involved in assembling them. Finally, you'll cover the presentation layer and the patterns that can be applied to have a decoupled and testable code base. By the end of this architecture book, you'll be able to build an application following clean architecture principles and have the knowledge you need to maintain and test the application easily.
Table of Contents (15 chapters)
Part 1 – Introduction
Part 2 – Domain and Data Layers
Part 3 – Presentation Layer

Using OkHttp and Retrofit for networking

In this section, we will look at how we can use the Retrofit library to perform networking operations and the benefits it provides.

Many Android applications require the internet to access data stored on various servers. Often, this is done through the HyperText Transfer Protocol (HTTP) protocol in which data is exchanged between the applications and the servers. The data is often represented in JavaScript Object Notation (JSON) format. In the past, these types of exchanges were implemented either with HttpURLConnection or Apache HttpClient. Working with either of these components meant that developers would need to manually handle the conversion from plain old Java objects (POJOs) to JSON, handle various network configurations, and deal with backward compatibility.

The OkHttp library will address some of these issues through an OkHttpClient class that will handle various network configurations and that provides other features such as...