Learn How to Use Kotlin to Share Code Across Platforms

Application developers have to often repeat the same code across multiple platforms, which is not only time-consuming but also error-prone. Most documentation targets only specific use cases but misses out on the nuances essential to sharing code effectively across platforms.

Kotlin Multiplatform by Tutorials will help you efficiently implement real-world apps for different platforms by sharing common code.

Who This Book is For

This book is for mobile developers and managers who want to explore how they can use Kotlin Multiplatform to share code across Android, iOS and desktop apps. If you want to reduce development and testing time by writing certain parts of your apps only once, this book will help.

Topics Covered in Kotlin Multiplatform by Tutorials

• Jetpack Compose Android: Use Android's latest UI toolkit to quickly spin up the UI for different screens of your Android app.
• Compose Multiplatform: Use the concepts you learned in Jetpack Compose Android to develop the UI for desktop apps.
• SwiftUI: Learn how to develop the UI for iOS and macOS apps entirely in Swift.
• Testing: Make your code reliable by writing tests for both common code as well as platform-specific code.
• Koin: Learn about dependency injection and how you can use Koin to implement dependency injection in multiplatform apps.
• SQLDelight: Create a common persistence layer for your multiplatform apps while also getting the benefits of compile-time safety for schemas, statements and migrations.
• Serialization: Learn about different serialization formats and how you can use them to parse JSON data fetched from the Internet.
• Ktor: Implement a common networking layer with support for platform-specific HTTP clients.
• Coroutines: Learn about structures concurrency and the considerations to keep in mind while using coroutines on different platforms.

One thing you can count on: After reading this book, you’ll be prepared to create modules where you can write your code only once but target multiple platforms.

Table of Contents

Chapter 1: Introduction

Chapter 2: Getting Started

Chapter 3: Developing UI: Android Jetpack Compose

Chapter 4: Developing UI: iOS SwiftUI

Chapter 5: Developing UI: Compose Multiplatform

Chapter 6: Connecting to Platform-Specific API

Chapter 7: App Architecture

Chapter 8: Testing

Chapter 9: Dependency Injection

Chapter 10: Data Persistence

Chapter 11: Serialization

Chapter 12: Networking

Chapter 13: Concurrency

Chapter 14: Creating Your KMP Library

About the Authors

Kevin David Moore is an author of this book. He is a Google Developer Expert in Flutter and has been developing Android apps for over 13 years and Flutter apps for over 3 years. He’s written several articles, books and videos at https://www.kodeco.com. He is a cat lover with three cats and he is working towards his black belt in Taikawando.

Carlos Mota is an author of this book. Carlos is an Android GDE and can easily be spotted either working on Android applications written in Kotlin or developing them along with Kotlin Multiplatform. He’s enthusiastic about new technology and constantly trying to reach that last 20% of all of his side projects that seem to be really far away. He loves to share his knowledge with others by giving talks, teaching, writing or along with a cold beer in the nearest pub. A GDG Coimbra organizer and Kotlin evangelist, he also has a giant passion for travel, photography, space and the occasional run.

Saeed Taheri is an author of this book. He has been creating iOS applications for about 12 years and Android applications for about 6 years. He has written articles at https://www.kodeco.com. When not at his computer, he enjoys spending time with his family, playing football or watching it on TV.