Author | Lightnews

Márton Braun

@zsmb.co

1.8K followers 230 following 520 posts

Developer Advocate @ JetBrains, working on Kotlin and Compose Multiplatform, KMP tooling, and Amper. Instructor @ BME-VIK. Co-organizer @ Android Budapest. GDE for Android. Ex-Google. zsmb.co

Posts Media Videos Starter Packs

Pinned

Márton Braun @zsmb.co · May 19

KMP tooling! Get your KMP tooling here!

Jokes aside, it's great to have this finally out in a public release. Please try it and send feedback our way.

Kotlin by JetBrains @kotlinlang.org · May 19

🎉 The new Kotlin Multiplatform for IntelliJ IDEA and Android Studio!

✨ Integrated New Project wizard
🔍 Preflight checks
🔧 Multiplatform run configurations
🧭 Cross-language support
🎨 Compose Multiplatform support
🔥 Compose Hot Reload

Learn more
blog.jetbrains.com/kotlin/2025/...

Kotlin Multiplatform Tooling: Now in IntelliJ IDEA and Android Studio | The Kotlin Blog

The new KMP plugin for IntelliJ IDEA and Android Studio simplifies every part of the KMP experience, from project setup to Compose UI previews.

blog.jetbrains.com

2 16

Márton Braun @zsmb.co · 4h

Read what broke this time:

Building a macOS screen saver in Kotlin

This article documents how I created my own custom screen saver for macOS, built almost entirely in Kotlin, using the powers of Kotlin Multiplatform compiled to macOS. Join me for a tale of Kotlin success and macOS failures.

zsmb.co

Márton Braun @zsmb.co · 4h

A macOS update isn't complete without it breaking custom screen savers, I guess... My blog post now includes a brief section on Tahoe, and I released a new patched version of the Kotlin Logo screen saver as well.

Grab it here:

GitHub - zsmb13/KotlinLogo-ScreenSaver: A macOS screensaver featuring Kotlin logos

A macOS screensaver featuring Kotlin logos. Contribute to zsmb13/KotlinLogo-ScreenSaver development by creating an account on GitHub.

github.com

1 2

Reposted by Márton Braun

Sebastian Aigner 📡 @sebi.io · 4d

Kotlin 2.2.21 and 2.2.20 have a lot goodies in them. In my video, I'm looking at the highlights! www.youtube.com/watch?v=QWpp...

What's new in Kotlin 2.2.21 (and 2.2.20!)

YouTube video by Kotlin by JetBrains

www.youtube.com

1 7 18

Márton Braun @zsmb.co · 5d

There are multiple reasons for the change, one of them is that Android will stop supporting the all-in-one setup in upcoming AGP versions (you won't be able to make a Kotlin Multiplatform module an Android app).

1 1

Márton Braun @zsmb.co · 5d

I'm not sure an automated migration is possible for existing projects as there can be a lot of custom config in there already. But we'll certainly have some guidance around this in some form.

Márton Braun @zsmb.co · 5d

Can you rephrase that last question? I'd love to answer but I didn't quite understand it :D

Márton Braun @zsmb.co · 5d

Further modularization is always possible indeed, this is just about the default generated.

So the question is basically: is it confusing that sometimes you get `sharedUi` and `sharedLogic` and sometimes just... `sharedClient` or `sharedCompose` or whatever we call that one shared module.

1 1

Márton Braun @zsmb.co · 5d

An interesting question is, what to do when all clients use Compose: should there still be separate `sharedUi` and `sharedLogic` modules for consistency with other configs (when some clients use native UI, this split is required), or just a single shared module for simplicity?

Márton Braun @zsmb.co · 5d

A new default project structure for KMP is in the works 🚧, replacing the all-in-one composeApp module with per-platform app modules and separate shared modules.

The image below shows Android, iOS, Desktop, and Web apps that all use the same shared Compose UI. Feedback welcome!

5 2 19

Márton Braun @zsmb.co · 6d

If you're not on a Kotlin 2.x version yet: what's your blocker for upgrading?

3 3

Márton Braun @zsmb.co · 7d

Looks like Medium is down.

... In a way though, this page is actually a much better UX than what you usually get there.

1 6

Márton Braun @zsmb.co · 8d

Mini player and background player... *Maybe* you want to know your kid is not leaving the app, and as long as you hear something playing, at least you know they're on that screen?

But a lot of the other locked features are extremely hard to reason for at all.

Márton Braun @zsmb.co · 8d

Someone really needs to explain to me why "made for kids" content can't be added to a playlist on YouTube so I can find it again later. I swear I'm an adult.

2 2

Reposted by Márton Braun

Caner Kaşeler @canerkaseler.bsky.social · 11d

Finally, we can set Project view as default in Android Studio. This is really nice if you develop Kotlin Multiplatform project in Android Studio 🛠️📱

#AndroidDev #Kotlin #KotlinMultiplatform #AndroidStudio #iOSDev

1 5 18

Márton Braun @zsmb.co · 11d

Just an incorrect description, I think.

Márton Braun @zsmb.co · 11d

Curious ratio.

1 3

Reposted by Márton Braun

Pamela Hill @pamelaahill.bsky.social · 12d

I'm super proud of this webinar for underrepresented communities to CFP for KotlinConf. It has been a goal of mine to have this type of encouraging event since I started at JetBrains, and now you can watch the video 🥰

www.youtube.com/watch?v=cTfH...

Your Voice Belongs Here: Creating Compelling KotlinConf Proposals

YouTube video by Kotlin by JetBrains

www.youtube.com

4 8

Márton Braun @zsmb.co · 19d

So... Is it still worth learning to code?

Is it still worth learning to code?

Clara explores whether learning to code is still worthwhile, offering crucial insights into the learning process and the future of programming. 🎓JetBrains Student Pack Sign up for free professional IDEs, the Code With Me Plugin, and more: https://jb.gg/academy/free-offer-students 📚 Courses: Fin

www.youtube.com

1 2

Márton Braun @zsmb.co · 20d

If you're interested in building your own AI agents, you should try the Koog framework that lets you do that in Kotlin!

We now have a brand new landing page for it, too:

Koog: JVM-native framework by JetBrains for building AI agents

Koog is a framework for building scalable and enterprise-ready AI agents across all platforms – including JVM, Android, iOS, JavaScript, and WebAssembly.

www.jetbrains.com

Reposted by Márton Braun

Sebastian Sellmair @sellmair.dev · 21d

We released Compose Hot Reload 1.0.0-rc01 🎆
What started as a happy accident was promised to be pushed towards stability as quickly as possible, allowing you to rely on a stable user experience.

github.com/JetBrains/co...

Release v1.0.0-rc01 · JetBrains/compose-hot-reload

Release summary 🔥🎆 The project is promoted to the 'RC' stage. We are still working on convenient tooling in IntelliJ and Android Studio and will continue experimenting there. The 'core technology' ...

github.com

8 29

Márton Braun @zsmb.co · 21d

We just published the 1.0.0-rc01 release for Compose Hot Reload! With this, we are quickly approaching our first stable release.

Have you tried Hot Reload yet? Let us know how it's working for you!

Release v1.0.0-rc01 · JetBrains/compose-hot-reload

Release summary 🔥🎆 The project is promoted to the 'RC' stage. We are still working on convenient tooling in IntelliJ and Android Studio and will continue experimenting there. The 'core ...

github.com

3 19

Márton Braun @zsmb.co · 26d

This continues to sound like an absolutely awful time.

The changes give Google unreasonable control over all Android devices and brings everyone closer to the locked down Apple experience.

The current Play verifications and warnings for untrusted sources should be enough.

Android Developers @androiddevs.bsky.social · 27d

👋 We know there's been a lot of conversation about developer verification. We hear you!

Developer feedback is essential as we build this process. We announced this requirement with a long lead time so you have plenty of time to ask questions, provide feedback, and get ready for

2 5 17

Reposted by Márton Braun

Zac Sweers @zacsweers.dev · Sep 25

Designers when an android engineer ask to just use the system back arrow: “our custom back arrow is an expression of our brand, we cannot yield to looking like a Google app”

Designers when Liquid Glass looks like shit everywhere in their app: “LEROY JENKINSSSSSSS”

4 17 120

Márton Braun @zsmb.co · Sep 23

Have you tried incremental compilation for Kotlin/Native yet? If yes, did it work well in your projects? Did it cause any problems?

To try it, add this to your gradle.properties:

kotlin.incremental.native=true

2 5

Márton Braun @zsmb.co · Sep 23

Selling black shirts outside CityCube tomorrow might be a profitable business, huh

1 3