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.

StateFlow behaves as a state holder and a Flow of values at the same time. Due to conflation, a collector of a StateFlow might not receive all values that it holds over time. This article covers what that means for your tests.

Five years ago, at the 2017 Google I/O Keynote, Kotlin became an officially supported language for Android development. With this post, let's celebrate by revisiting that initial story, some important steps along the way, and by looking at the ongoing efforts by Google to support Kotlin.

Interview material for the 5 years of Kotlin on Android celebration that did not make it into the main blog post.

See the steps we took to migrate our samples to the new APIs, and then get started on migrating your own project!

Another year over, a new one's almost begun. Here's a brief summary of what I've done in this one.

Tracking file upload progress can have some unexpected complexities. This article tells the story of how we refined our implementation of this feature in the Stream Chat Android SDK.

Have you ever encountered APIs that show warnings or errors when you use them, saying that they're internal or experimental? In this guide, you'll learn everything you need to know about opt-in APIs in Kotlin: how to create and use them, and all their nuances.