Introduction to Kotlin Multiplatform: Write Once, Run Everywhere

In this talk, you will dive into the exciting world of Kotlin Multiplatform (KMP). KMP empowers you to develop code that seamlessly runs across various platforms, saving time and resources.

Transcript

1. Write Once, Run Everywhere: Introduction to Kotlin Multiplatform @lamouresparus KotlinConf’24 Minna
2. Meet Me Hi there, I am Love Otudor.
3. Agenda
4. • The Multiplatform Challenge • What is Kotlin Multiplatform? • Advantages of Kotlin Multiplatform • Limitations of Kotlin Multiplatform • Get Started • Resources Agenda
5. The Multiplatform Challenge
6. Web Android iOS Desktop Multiple OS
7. Common Logic Common Code Image generated by Gemini
8. What is Kotlin Multiplatform?
9. Kotlin Multiplatform is a framework by JetBrains to simplify cross-platform development.
10. Write shared code once and run it on multiple platforms.
11. Subtitle Text What Platforms?
12. Subtitle Text • Server • Mobile • Desktop • Web What Platforms?
13. Image from kotlinlang.org
14. Subtitle Text • iOS, • Android, • macOS, • Windows, • Linux, and others. Multiplatform applications will work on:
15. Write shared code once and run it on multiple platforms.
16. Before Kotlin Multiplatform Data (repository/HTTP client) iOS Domain (use cases/entities) Presentation (viewmodels/controllers) UI (views) Data (repository/HTTP client) Android Domain (use cases/entities) Presentation (viewmodels/controllers) UI (views) Data (repository/HTTP client) Desktop Domain (use cases/entities) Presentation (viewmodels/controllers) UI (views)
17. With Kotlin Multiplatform
18. With Kotlin Multiplatform: Share Business Logic iOS Presentation (viewmodels/controllers) UI (views) Android Presentation (viewmodels/controllers) UI (views) Desktop Presentation (viewmodels/controllers) UI (views) Data (repository/HTTP client) Domain (use cases/entities) Shared Module
19. With Compose Multiplatform
20. Share Business Logic and UI iOS Platform Specific code Android Platform Specific code Desktop Platform Specific code Data (repository/HTTP client) Domain (use cases/entities) Shared Module Presentation (viewmodels/controllers) UI (views)
21. Compose Multiplatform is a UI declarative framework that makes it possible to build UI once and share it across multiple platforms with Kotlin.
22. Compose Multiplatform lets you share more Kotlin Multiplatform code, not just the app's logic but also the UI.
23. Advantages of Kotlin Multiplatform
24. • Kotlin compiles directly to machine code for each target platform (Android, iOS, etc.). • Direct access to native APIs on each platform. Advantages
25. • Reduce time spent writing and maintaining the same code for different platforms. • Retain the flexibility and benefits of native programming. Advantages
26. Limitations of Kotlin Multiplatform
27. • Requires pure Kotlin libraries in the shared module. • Mac Development for iOS. Limitations
28. Get Started
29. 1. Setup your environment
30. 1. Setup your environment JDK 1. Android Studio version 2.2 and higher comes with the latest OpenJDK. 2. To check, run java -version on your terminal
31. 1. Check your environment 1. Install KDoctor. Mac Users only 2. After the installation is completed, call KDoctor in the console:
32. 2. Create the project with wizard kmp.jetbrains.com Image from Jetbrains
33. 2. Create the project with wizard 5. Click the Download button and unpack the resulting archive.
34. 3. Project Structure Image from Jetbrains
35. 4. Run your app Image from Jetbrains
36. Resources
37. • Create a Kotlin Multiplatform app — tutorial • Create your first cross-platform app • Introduction to Kotlin Multiplatform • Kotlin Multiplatform Tutorial for Beginners - Your First KMP App Resources
38. Thank you