You're reading from How to Build Android Apps with Kotlin

Product typeBook

Published inFeb 2021

Reading LevelIntermediate

PublisherPackt

ISBN-139781838984113

Edition1st Edition

Languages

Kotlin

Tools

Android Studio

Concepts

Android Development

Authors (4):

Alex Forrester

Eran Boudjnah

Alexandru Dumbravan

Jomar Tigcal

View More author details

Repository

Repository is a pattern that helps developers keep code for data sources separate from activities and ViewModels. It offers centralized access to data that can then be unit tested:

Figure 11.1: Diagram of repository architecture

In the preceding diagram, you can see the central role the repository plays in an application's code. Its responsibilities include:

Keeping all the data sources (SQLite, Network, File System) required by your activity or the application
Combining and transforming the data from multiple sources into a single output required at your activity level
Transferring data from one data source to another (saving the result of a network call to Room)
Refreshing expired data (if necessary)

Room, network layer, and FileManager represent the different types of data sources your repository can have. Room may be used to save large amounts of data from the network, while the filesystem can be used to store...

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How to Build Android Apps with Kotlin

Published in: Feb 2021Publisher: PacktISBN-13: 9781838984113

Authors (4)

Alex Forrester

Alex Forrester is an experienced software developer with more than 20 years of experience in mobile, web development, and content management systems. He has been working with Android for over 8 years, creating flagship apps for blue-chip companies across a broad range of industries at Sky, The Automobile Association, HSBC, The Discovery Channel, and O2. Alex lives in Hertfordshire with his wife and daughter. When he's not developing, he likes rugby and running in the Chiltern hills.
Read more about Alex Forrester

Eran Boudjnah

Eran Boudjnah is a developer with over 20 years of experience in developing desktop applications, websites, interactive attractions, and mobile applications. He has been working with Android for about 7 years, developing apps and leading mobile teams for a wide range of clients, from start-ups (JustEat) to large-scale companies (Sky) and conglomerates. He is passionate about board games (with a modest collection of a few hundred games) and has a Transformers collection he's quite proud of. Eran lives in North London with Lea, his wife.
Read more about Eran Boudjnah

Alexandru Dumbravan

Alexandru Dumbravan has been an Android Developer since 2011 and worked across a variety of Android applications which contained features such as messaging, voice calls, file management, and location. He continues to broaden his development skills while working in London for a popular fintech company.
Read more about Alexandru Dumbravan

Jomar Tigcal

Jomar Tigcal is an Android developer with over 10 years of experience in mobile and software development. He worked on various stages of app development for small startups to large companies. Jomar has also given talks and conducted training and workshops on Android. In his free time, he likes running and reading. He lives in Vancouver, Canada with his wife Celine.
Read more about Jomar Tigcal

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