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Pragmatic Code Sharing with Kotlin Multiplatfor...
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Márton Braun
March 17, 2024
Programming
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Pragmatic Code Sharing with Kotlin Multiplatform (Simonyi 2024)
Márton Braun
March 17, 2024
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Transcript
Kotlin Multiplatform Kódmegosztás pragmatikusan Braun Márton Developer Advocate JetBrains
iOS Android Desktop Web Server
iOS Android Desktop Web Server
kotl.in/kmp-case-studies
None
None
Projekt kezdete
Projekt kezdete Kotlin/JVM .kt .class Java .java .class
Nyilvános bejelentés Projekt kezdete Open source Kotlin/JVM .kt .class Java
.java .class
Nyilvános bejelentés Projekt kezdete Open source Kotlin/JVM .kt .class Kotlin
1.0
Kotlin 1.0 Nyilvános bejelentés Projekt kezdete Open source JavaScript Kotlin/JVM
.kt .class Kotlin/JS .kt .js
Kotlin 1.0 Nyilvános bejelentés Projekt kezdete Open source Native JavaScript
Kotlin/JVM .kt .class Kotlin/Native .kt .klib|.kexe Kotlin/JS .kt .js
Kotlin 1.0 Nyilvános bejelentés Projekt kezdete Open source Native JavaScript
KMP stable
Kotlin 1.0 Nyilvános bejelentés Projekt kezdete Open source Native JavaScript
KMP stable Wasm Kotlin/JVM .kt .class Kotlin/Native .kt .klib|.kexe Kotlin/JS .kt .js Kotlin/Wasm .kt .wasm
Jetpack KMP Kotlin first Java + Kotlin Kotlin 1.0 Nyilvános
bejelentés Projekt kezdete Open source Native JavaScript KMP stable Wasm
iOS Android Desktop +
Desktop + Android iOS .kt .kt .class .framework
iOS .class .framework Desktop + Android .kt .kt
Common .kt .kt
.kt .kt .kt .kt Android Desktop iOS Common
.kt .kt .kt .kt Android Desktop iOS Common
.kt .kt .kt .kt Android Desktop iOS Common
.kt .kt .kt Android Desktop iOS Common .kt
.kt .kt .kt .kt Android Desktop iOS Common
.kt .kt .kt Android Desktop iOS Common class Person(val name:
String, var age: Int) fun greet(person: Person) { println("Hello, ${person.name}") }
.kt .kt .kt Android Desktop iOS Common fun List<Person>.duplicates(): Map<String,
Int> { return map { it.name.substringBefore(" ") } .groupingBy { it } .eachCount() .filter { (name, count) -> count > 1 } }
Android Desktop iOS actual Common expect actual actual
Android Desktop iOS Common expect actual actual actual
Android Desktop iOS Common fun getPlatform(): String expect actual actual
actual
Android Desktop iOS Common fun getPlatform(): String fun getPlatform(): String
= "Java ${System.getProperty("java.version")}" expect actual actual actual
Android Desktop iOS Common fun getPlatform(): String fun getPlatform(): String
= "Java ${System.getProperty("java.version")}" fun getPlatform(): String = "Android ${Build.VERSION.SDK_INT}" expect actual actual actual
Android Desktop iOS Common fun getPlatform(): String fun getPlatform(): String
= "Java ${System.getProperty("java.version")}" fun getPlatform(): String = "iOS ${UIDevice.currentDevice.systemVersion}" fun getPlatform(): String = "Android ${Build.VERSION.SDK_INT}" expect actual actual actual
Multiplatform libraries
github.com/terrakok/kmp-awesome
.kt .kt .kt Android Desktop iOS Common import io.ktor.client.* suspend
fun loadHtml(): String { val client = HttpClient() val response = client.get("https://kotlinlang.org") return response.body<String>() }
Shared logic
Shared logic Swing Desktop logic Android Views Android logic SwiftUI
iOS logic
Shared logic Swing Desktop logic Android Views Android logic SwiftUI
iOS logic
Shared logic Swing Desktop logic Android Views Android logic SwiftUI
iOS logic
Compose Multiplatform jb.gg/compose
Compose Multiplatform jb.gg/compose
Swing Desktop logic Android Views Android logic SwiftUI iOS logic
Shared logic
Desktop logic Android logic iOS logic Shared logic Shared UI
Compose Multiplatform
Desktop logic Android logic iOS logic Shared logic Shared UI
Compose Multiplatform Swing Android Views SwiftUI
Preview
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Kotlin alapú szoftverfejlesztés VIAUAV41 Free Educational Licenses jb.gg/edulicense Kotlin Multiplatform
jb.gg/kmp Compose Multiplatform jb.gg/compose Fleet jb.gg/fleet Kotlin Multiplatform Kódmegosztás pragmatikusan zsmb.co/talks Braun Márton marton@jetbrains.com