Sebastian and Márton discuss building KMP libraries with Jay Shortway, the author of RevenueCat’s Kotlin Multiplatform SDK for in-app purchases.Resources: RevenueCat KMP SDK How we built the RevenueCat SDK for Kotlin Multiplatform Hybrid SDK Architecture at RevenueCat ttypic/swift-klib-plugin on GitHub RevenueCat/purchases-kmp on GitHub Consider moving `Instant` and `Clock` to the standard library · Kotlin/kotlinx-datetime RevenueCat openingsHosts: Sebastian Aigner – Website | Bluesky Márton Braun – Website | Bluesky Guest: Joop Korteweg – Twitter Timeline:(0:00) Intro(0:44) What’s RevenueCat(4:00) In-app purchases are hard(7:22) The multiplatform SDK(12:44) The demand for KMP(16:30) Hiring and team structure(18:42) SDKs for any framework(21:27) Building on native SDKs(23:45) Improving iOS linking(24:54) The SDK is on GitHub(26:05) Benefits of building on native(28:18) Designing a common API(33:21) Add-on modules for SDKs(37:30) Instant in the standard library(38:04) Returning results from the API(39:53) API design decisions(44:57) Codegen opportunities(45:48) The best things about KMP(47:07) KMP improvements wishlist(48:28) The KMP journey(49:45) Wrap-up
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52:24
Becoming a KMP Expert
Sebastian and Pamela discuss what it means to be an expert in Kotlin Multiplatform, with the help of a panel of experts! Learn about why it's interesting to dive deep into a certain technology, recommendations on how to learn advanced topics, and general advice on how to get the most out of using KMP.SKIEKMP libraries: whyoleg/cryptography-kotlinInteresting code to explore: JetBrains/kotlin Kotlin/kotlinx-datetime Kotlin/kotlinx-io Kotlin/kotlinx.coroutines Cartesian product by Jake Get an invite!Ecosystem wishlist: wasmJs support in SQLDelight Compose Multiplatform support in MapLibreLearning resources: Kotlin Multiplatform build setup from scratch with Sebastian Sellmair KEEP - Kotlin Evolution and Enhancement Process HexFormat proposal and discussion Uuid proposal and discussionMore KMP experts: Kevin Galligan Bluesky Twitter Russell Wolf GitHub Twitter multiplatform-settings Jesse Wilson GitHub Sebastian Sellmair Twitter Salomon Brys TwitterHosts: Sebastian Aigner Website Pamela Hill Blog BlueskyGuests: Jake Wharton Website John O'Reilly Website KMP samples on GitHub Konstantin Tskhovrebov Mastodon Tadeas Kriz Mastodon Bluesky(0:00) Introductions(1:40) Why be a KMP expert?(9:14) First steps to being an expert(16:38) Respecting each platform(24:04) Libraries for KMP(27:45) Advanced learning resources(38:18) Ecosystem wishlist(43:03) Exercising your KMP skills(48:15) Shoutouts to other experts(51:34) Wrap-up
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52:43
Going from Swift to Kotlin with Skip
In a slightly unconventional episode, Sebastian and Márton talk to the founders of Skip, an iOS-to-Android, Swift-to-Kotlin transpiler solution. Marc and Abe have a background working on both Apple platforms and the JVM, and their latest project is a bridge across these two ecosystems.
Skip
Skip.tools on GitHub
Contributing to SkipUI webinar
kdoctor
Hosts:
Sebastian Aigner
Website
Bluesky
Márton Braun
Website
Bluesky
Guests:
Abe White
Twitter
Mastodon
Marc Prud'hommeaux
GitHub
(0:00) Weather (2:02) Introductions (3:10) Elevator pitch (3:45) The initial idea(6:14) Pivot around the server-side (8:35) Skip(.tools) (8:56) The target audience (9:58) What about Android devs? (12:11) The current state (14:57) Pricing and components (16:43) Contributing to SkipUI (18:55) Reimplementing everything (23:07) The Skip stack (26:17) Wrapping JVM types (28:27) Writing Kotlin in Swift?! (29:56) Tooling support (32:02) There’s a Gradle project! (34:39) iOS API coverage (38:24) Platform differences (40:10) Data storage (44:31) Building on JVM libraries (46:42) JSON problems (48:00) Testing the Skip stack (51:42) SwiftUI to Compose (58:21) IDE experiences (1:03:35) Conclusion
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1:04:57
Platform Integrations in Kotlin Multiplatform with Russell Wolf
Sebastian introduces the new co-host of the podcast, in a special episode recorded on location at droidcon New York! Joined by Russell Wolf, author of the multiplatform-settings library, we discuss the conference, different code sharing approaches for Kotlin Multiplatform, and how to build great multiplatform libraries.
droidcon New York
When sharing isn’t caring: Using platform-specific code in Kotlin Multiplatform (Russell’s talk)
Compose Multiplatform on iOS: On the Road to Stable (Seb’s talk)
Composing an API the *right* way (Márton’s talk)
The deprecated Accompanist WebView implementation for Jetpack Compose
russhwolf/multiplatform-settings on GitHub
Kotlin Multiplatform database libraries
Room
SQLDelight
Dependency injection libraries
Koin
Kotlin-inject
ViewModel for Kotlin Multiplatform
Hosts:
Sebastian Aigner
Website
Márton Braun
Website
Guest:
Russell Wolf
GitHub
Twitter
Timestamps
0:00 Intro at home
2:02 Intro at droidcon NYC
4:23 Russell’s talk topic
8:14 Code sharing approaches
12:28 Wrapping native APIs
16:18 Attempted segue
16:35 Designing reusable APIs
18:02 Actual segue
18:14 multiplatform-settings
20:23 Supported platforms
24:05 SharedPreferences challenges
26:20 Observable preferences
29:51 Secure storage
30:55 Windows again
31:36 Library code as reference
33:15 Testable library code
35:05 Initializing a KMP library
38:18 Database libraries
40:55 Dependency injection
44:40 Outro
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45:45
Kotlin After 2.0
In this episode, we talk about the future of Kotlin and its development after the 2.0 version.
South Africa