kotlin MultiPlatform

Kotlin multiplatform makes you share an app's data between the web, IOS and Android solutions. In this talk, we go through Kotlin Multi-Platform to get a deeper insight into how it works.

Transcript

1. Kotlin Multiplatform KOTLIN / Everywhere Nairobi Frank Tamre @tamrefrank
2. I love swimming.
3. Challenge:
4. Develop a swimming fitness tracker app for guys I swim with in the team.
5. Swim App IOS Android Web etc
6. Swim App for all members of the team.
7. What we already know about Kotlin
8. Kotlin Targets
9. Kotlin/Android • Officially Supported • Android KTX • First Class for Android
10. Kotlin/JVM 1.6+ • 100% Java Interop • Mix Java/Kotlin in one module • Copy-paste conversion • Gradle, Maven, Ant, Command line
11. Kotlin/JS • Transpile to JavaScript • Readable • dynamic and JS interop
12. Kotlin/Native ❤ LLVM • No Virtual Machine! • Targets ◦ iOS / Android ◦ Windows, Linux, Mac ◦ Small Devices
13. Multi-Platform Cross-Platform
14. Cross-Platform
15. Multi-Platform
16. Why Multi-Platform
17. Reusing Code • Share Kotlin/Common code between targets • Cannot use Platform APIs
18. Multiplatform • Share common code ◦ Business logic, Utilities, UI-core, DTO • Use platform for the rest ◦ UI, API, Frameworks • Write code once, run on all targets natively
19. Some Libraries Standard Libraries: regex, Collections etc Ktor- async HTTP server/client lib Kotlinx.serialization – JSON, BOR Object serialization lib 3rd Party Libs – SQLDelight(db) etc
20. 3rd Party Libraries SQL Delight Db and Persis Ktor- async HTTP server/client lib Kotlinx.serialization – JSON, BOR Object serialization lib
21. Swim App IOS Android Web etc
22. Kotlin/Common src actual & expect
23. expect & actual common *.kt expect fun expect class ... platform *.kt actual fun actual class ...
24. *.kt common expect ... *.kt, *.java, *.jar JVM actual... *.kt, *.js, NPM JS actual... *.kt, C, Swift, Framework Native actual...
25. Swim App Activity/View View Models / view Controler Performance Optimizer Logic DB serialization
26. Swim App Activity/View View Models / view Controler Performance Optimizer Logic DB serialization
27. Thanks