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

Activity transitions

When opening and closing an activity, Android will play a default transition. We can customize the activity transition to reflect the brand and/or differentiate our app. Activity transitions are available, starting with Android 5.0 Lollipop (API level 21).

Activity transitions have two parts – the enter transition and the exit transition. The enter transition defines how the activity and its views will be animated when the activity is opened. The exit transition, meanwhile, describes how the activity and views are animated when the activity is closed, or a new activity is opened. Android supports the following built-in transitions:

  • Explode: This moves views in or out from the center
  • Fade: This view slowly appears or disappears
  • Slide: This moves views in or out from the edges

Now, let’s see how we can add activity transitions in the following section. There are two ways to add activity transitions – through XML and...