Kotlin Multiplatform Development

Course details

Master cross-platform development with Kotlin by creating sophisticated applications that run seamlessly across Android, iOS, web, and desktop. In this comprehensive course, instructor Colin Lee empowers you to make smart architectural choices between Compose Multiplatform's shared UI approach and platform-specific interfaces like SwiftUI, balancing code reuse with native feel. Learn how to create shared networking layers with Ktor and implement cross-platform data persistence using SQLDelight. Whether you're a mobile developer looking to expand your reach or a full-stack engineer seeking to unify your codebase, this course equips you with the essential skills you need to develop professional Kotlin applications that truly write once and run from anywhere.

Learning objectives
Assemble a Kotlin application that can execute across Android, iOS, web, macOS, Windows, and Linux.
Correctly choose between building your Kotlin app using either Compose Multiplatform with shared Compose user interfaces or using Kotlin Multiplatform with native user interface libraries, such as Jetpack Compose and SwiftUI.
Create shared networking code in Kotlin across multiple platforms using a REST library such as Ktor.
Share database code in Kotlin across multiple platforms using a library such as SQLDelight.

Concepts

0. Introduction

01 - Kotlin multiplatform development
02 - What you should know

1. Creating Our First Multiplatform App

03 - The problem Kotlin Multiplatform solves
04 - Comparison with alternatives
05 - Supported platforms and performance
06 - Just what the KDoctor ordered
07 - Android studio for KMP
08 - Xcode for KMP
09 - Crafting a template with the Kotlin Multiplatform wizard

2. Combining Native with Multiplatform

10 - Building our first multiplatform app
11 - Whether to use Compose Multiplatform
12 - Expect and actual
13 - An actual example
14 - Accessing operating system methods
15 - Multiplatform project structure

3. KMP and Swift

16 - Using Kotlin from Swift code
17 - Making it easier with Swift export
18 - KMP together with SwiftUI

4. Architecture

19 - Recommended architecture with MVVM
20 - Google ViewModel

5. Sharing Network

21 - Adding Ktor to your project
22 - Modeling with Kotlinx-serialization
23 - Making network requests
24 - Apollo GraphQL

6. Sharing Database

25 - Adding SQLDelight to your project
26 - Setting up your database and adding objects
27 - Creating queries
28 - Going with the flow

7. Quality of Life

29 - Kermit for logging
30 - Managing resources
31 - KOIN for dependency injection
32 - Storing values in multiplatform-settings
33 - Dates in Kotlinx-datetime

Conclusion

34 - Next steps