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How to Build Android Apps with Kotlin

You're reading from   How to Build Android Apps with Kotlin A practical guide to developing, testing, and publishing your first Android apps

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Product type Paperback
Published in May 2023
Publisher Packt
ISBN-13 9781837634934
Length 704 pages
Edition 2nd Edition
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Authors (4):
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Alex Forrester Alex Forrester
Author Profile Icon Alex Forrester
Alex Forrester
Jomar Tigcal Jomar Tigcal
Author Profile Icon Jomar Tigcal
Jomar Tigcal
Eran Boudjnah Eran Boudjnah
Author Profile Icon Eran Boudjnah
Eran Boudjnah
Alexandru Dumbravan Alexandru Dumbravan
Author Profile Icon Alexandru Dumbravan
Alexandru Dumbravan
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Toc

Table of Contents (24) Chapters Close

Preface 1. Part 1: Android Foundation
2. Chapter 1: Creating Your First App FREE CHAPTER 3. Chapter 2: Building User Screen Flows 4. Chapter 3: Developing the UI with Fragments 5. Chapter 4: Building App Navigation 6. Part 2: Displaying Network Calls
7. Chapter 5: Essential Libraries: Retrofit, Moshi, and Glide 8. Chapter 6: Adding and Interacting with RecyclerView 9. Chapter 7: Android Permissions and Google Maps 10. Chapter 8: Services, WorkManager, and Notifications 11. Chapter 9: Building User Interfaces Using Jetpack Compose 12. Part 3: Testing and Code Structure
13. Chapter 10: Unit Tests and Integration Tests with JUnit, Mockito, and Espresso 14. Chapter 11: Android Architecture Components 15. Chapter 12: Persisting Data 16. Chapter 13: Dependency Injection with Dagger, Hilt, and Koin 17. Part 4: Polishing and Publishing an App
18. Chapter 14: Coroutines and Flow 19. Chapter 15: Architecture Patterns 20. Chapter 16: Animations and Transitions with CoordinatorLayout and MotionLayout 21. Chapter 17: Launching Your App on Google Play 22. Index 23. Other Books You May Enjoy

Hilt

When we use Dagger in an Android application, there is a bit of boilerplate code we are forced to write. Some of it is around dealing with the lifecycles of objects linked with Activities and Fragments, which leads us to create subcomponents; other parts are around the usage of ViewModels.

An attempt to simplify Dagger for Android was made with the Dagger-Android library, but later on, a new library was developed on top of Dagger called Hilt. This library simplifies much of the Dagger usage through the usage of new annotations, which leads to more boilerplate code that can be generated.

To use Hilt in a project, we will need the following:

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'
apply plugin: 'com.google.dagger.hilt.android'

Or depending on how your project uses Gradle, you might need to use the following:

plugins {
  …
  id 'kotlin...
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