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)
12. Dependency Injection with Dagger and Koin


This chapter has covered fragments in depth, starting with learning the fragment lifecycle and the key functions to override in your own fragments. We then moved on to adding simple fragments statically to an app in XML and demonstrating how UI display and logic can be self-contained in individual fragments. Other options for how to add fragments to an app using a ViewGroup and dynamically adding and replacing fragments were then covered. We then finished with how this can be simplified by using the Jetpack Navigation component.

Fragments are one of the fundamental building blocks of Android development. The concepts you have learned here will allow you to build upon and progress to creating increasingly more advanced apps. Fragments are at the core of building effective navigation into your app in order to bind features and functionality that is simple and easy to use. The next chapter will explore this area in detail by using established UI patterns to build clear and...