Book Image

How to Build Android Apps with Kotlin - Second Edition

By : Alex Forrester, Eran Boudjnah, Alexandru Dumbravan, Jomar Tigcal
5 (1)
Book Image

How to Build Android Apps with Kotlin - Second Edition

5 (1)
By: Alex Forrester, Eran Boudjnah, Alexandru Dumbravan, Jomar Tigcal

Overview of this book

Looking to kick-start your app development journey with Android 13, but don’t know where to start? How to Build Android Apps with Kotlin is a comprehensive guide that will help jump-start your Android development practice. This book starts with the fundamentals of app development, enabling you to utilize Android Studio and Kotlin to get started with building Android projects. You'll learn how to create apps and run them on virtual devices through guided exercises. Progressing through the chapters, you'll delve into Android's RecyclerView to make the most of lists, images, and maps, and see how to fetch data from a web service. You'll also get to grips with testing, learning how to keep your architecture clean, understanding how to persist data, and gaining basic knowledge of the dependency injection pattern. Finally, you'll see how to publish your apps on the Google Play store. You'll work on realistic projects that are split up into bitesize exercises and activities, allowing you to challenge yourself in an enjoyable and attainable way. You'll build apps to create quizzes, read news articles, check weather reports, store recipes, retrieve movie information, and remind you where you parked your car. By the end of this book, you'll have the skills and confidence to build your own creative Android applications using Kotlin.
Table of Contents (24 chapters)
1
Part 1: Android Foundation
6
Part 2: Displaying Network Calls
12
Part 3: Testing and Code Structure
17
Part 4: Polishing and Publishing an App

Unit Tests and Integration Tests with JUnit, Mockito, and Espresso

In this chapter, you will learn about testing on the Android platform and how to create unit tests, integration tests, and UI tests. You will see how to create each of these types of tests, analyze how they run, and work with frameworks such as JUnit, Mockito, Robolectric, and Espresso.

You will also learn about test-driven development (TDD), a software development practice that prioritizes tests over implementation. By the end of this chapter, you will be able to combine your new testing skills to work on a realistic project.

In previous chapters, you learned about how to load background data and display it in the UI and how to set up API calls to retrieve data. But how can you be sure that things work well? What if you’re in a situation where you have to fix a bug in a project that you haven’t interacted much with in the past? How can you know that the fix you are applying won’t trigger...