Book Image

How to Build Android Apps with Kotlin

By : Alex Forrester, Eran Boudjnah, Alexandru Dumbravan, Jomar Tigcal
Book Image

How to Build Android Apps with Kotlin

By: Alex Forrester, Eran Boudjnah, Alexandru Dumbravan, Jomar Tigcal

Overview of this book

Are you keen to get started building Android 11 apps, but don’t know where to start? How to Build Android Apps with Kotlin is a comprehensive guide that will help kick-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 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. Moving ahead, you'll get to grips with testing, learn how to keep your architecture clean, understand how to persist data, and gain 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 (17 chapters)
Preface
12
12. Dependency Injection with Dagger and Koin

Introduction

In the previous chapter, you learned about architecture patterns such as MVVM. You now know how to improve the architecture of an app. Next, we will learn how to use animations to enhance our app's look and feel and make it different and better than other apps.

Sometimes, the apps we develop can look a little plain. We can include some moving parts and delightful animations in our apps to make them more lively and to make the UI and user experience better. For example, we can add visual cues so that the user will not be confused about what to do next and can be guided through what steps they can take. Animations while loading can entertain the user while content is being fetched or processed. Pretty animations when the app encounters an error can help prevent users from getting angry about what has happened and can inform them of what options they have.

In this chapter, we'll start by looking at some of the traditional ways of doing animations with Android...