I just released jetc.dev Newsletter Issue #309! Design system rules! Cross-platform haptics! Cross-platform biometrics! Editors! More editors! And... yet more editors?!? jetc.dev/issues/309 #JetpackCompose #AndroidDev

Unfortunately I missed "April Cools" day, but I've been exploring niche uses of LLMs. I think the "LLM chat box" clearly has it's place, but is so underwhelming as a product addition. So here's a teaser! What if your app's theme could react to app state with no no config?

I built a tiny IntelliJ IDEA plugin for something that had been bothering me for years github.com/saket/intell...

AI can be a useful tool, but just like any tool, used improperly it can cause some serious damage. And if you take a hard look at the AI hype train, there’s an awful lot of that going on right now. (4/4)

This year at Square we started shipping aggressively. Powered by a completed migration, new feature roadmaps, and AI adoption, we shifted into a build, demo, iterate, ship cycle. My team was showing our work to other engineers all the way up to the C-suite.

Dejavu is now Kotlin Multiplatform! (v0.3.0) Track and test recomposition regressions on: - Android - Desktop - iOS - WasmJs dejavu.mmckenna.me

The IntelliJ documentary is out now: www.youtube.com/watch?v=Kour... And it also covers the origin of Android Studio!

Just updated some wording for Dejavu to focus more on UI efficiency rather than performance thanks to some feedback.

OK, I shipped jetc.dev Newsletter Issue #306! Compose patch and beta releases! Compose Multiplatform alpha release! @mmckenna.me on recomposition testing! @aditlal.dev on recomposition budgets! And... is it time to take action?!? jetc.dev/issues/306 #JetpackCompose #AndroidDev

Thanks @androidweekly.bsky.social for featuring Dejavu! I just shipped v0.2.0 with CompositionObserver integration. When a recomposition assertion fails, you see exactly which state object caused it, and the value progression. github.com/himattm/dejavu

When it comes to AI agents / AI tooling + coding, I hear an awful lot of talk about: Efficiency Iteration speed / PR output rate / lines of codes produced I hear zero mentions about: Quality Customer obsession This will bite back, and it probably already is...

I've been using @zed.dev more and more as I work with AI tools. It's speed is amazing, but I missed the IntelliJ Islands theme. So I made it! Find it in Zed extensions. 😁 github.com/zed-industri...

I just published jetc.dev Newsletter Issue #305! Compose Multiplatform patch! FlexBox! CameraX! Permissions! ContentScale! @mmckenna.me on testing recomposition counts! NFC! jetc.dev/issues/305 #JetpackCompose #AndroidDev

Today I’m open-sourcing Dejavu! Testing UI performance in Jetpack Compose is frustrating. We profile and watch tools, yet regressions still creep in. I built Dejavu to make recomposition behavior something you can actually test.

Live now! Exploring a new testing lib from @mmckenna.me! Come checkout Dejavu with me here: twitch.tv/adammc

Ask anyone who worked at Block/Square what they loved most and I guarantee you the first thing they'll say is "its the people". blog.mmckenna.me/cook-togethe...

Two Pillars of (Engineering) Management www.zacsweers.dev/two-pillars-...

I have had too much coffee for the lack of work I need to do today. 😬

It's been a fun ride, but today is my last day at Block / Square. I started working with Android in 2014 and quickly grew to know Square for their engineering excellence and open source work.

Newly open sourced, check out qrgo! This utility easily lets you capture QR codes for your emulators. github.com/block/qrgo

What if your AI agent could order lunch? 🥑 We connected Goose to Square's Neighborhood MCP App. Now it can find nearby restaurants, browse real menus, and build your order. Avocado toast with feta? It's on the way! Try it out ⬇️

A new weather app? WHY YES. By the creators of Dark Sky? CAN I GET A HELL YES: acmeweather.com/blog/introdu...

Didn't expect to stream today but I was able to make it so going live for an hour to do some chill coding if you're around! twitch.tv/adammc

It is the year 2026, people are still confused about compileSdk and targetSdk. (e.g. you can have targetSdk that is higher than compileSdk) www.liutikas.net/2026/02/13/R... Maybe this will explain it a bit more. #android

Just published "Where are all the staff+ Android product engineers?" www.zacsweers.dev/where-are-th...

Stood up a repo with some of the claude plugins I've put together for personal projects. Things like setting up Metro DI, android a11y, and Airbnb's Showkase UI gallery library. github.com/benoberkfell...

agent-task-queue 0.2.0 is now available This release includes significant reliability improvements and a code refactor. Here's what's new:

A reminder to the news media: “conflicting accounts” is what you say BEFORE the incontrovertible video evidence appears. After that, your job is to ask why one side is lying, not to repeat the lie and pretend no one knows the truth.

the emotional roller coaster conference speakers love riding... dankim.com/the-stages-o...

Prism 0.4.3 is here! 💎 A fast, customizable status line for Claude Code - now with worktree support, Max/Pro usage tracking, and auto-updates.

Released agent-task-queue v0.1.4 When multiple AI agents work on the same machine, they independently trigger builds. Running these concurrently causes resource contention, builds that normally take 3 minutes can take 15+. This tool queues them.

Started sharing Prism internally and got some great feedback! This week I shipped a lot of changes • Go rewrite • performance improvements • configurable plugin system And it's a one line install! I really can't imagine using Claude Code without it anymore. github.com/himattm/prism

Continuing to customize my Claude status line, now named Prism 💎 It now supports: • Plugins • Easier install and config • Better git integration that's less blocking. Still very much under active dev, but it should be pretty easy to install. github.com/himattm/prism

Claude status lines are the new terminal prompt blog.mmckenna.me/claude-statu...

I recently migrated our codebase away from Ktlint to Ktfmt and Detekt. I summarized the reasons and migration steps in a blog post: engineering.block.xyz/blog/adoptin...

I love the new Jetbrains Islands theme and wanted it in my terminal. Here is is if you want it too! github.com/himattm/iter...

I've been running multiple AI agents locally and ran into resource contention issues when they'd both start builds at the same time.

I hope that every programmer I know reads and internalizes this pronto. A foundational document for LLMs in engineering practice. Much here should be obvious, but depending on your POV you will find crucial guidance here in one place or another

We need clearer vocabulary for describing how AI tools operate across the layers of a code base. They can act as productivity multipliers, but they also introduce tradeoffs. This article proposes a framework for discussing those tradeoffs. blog.mmckenna.me/the-piston-a...

Microdosing AI for Mobile Dev by @mmckenna.me blog.mmckenna.me/microdosing-...

Thanks for including my article about small AI usage for mobile dev! 💚🙌

I started a new "Applied AI" series on my blog. I'm focusing on finding ways to use these tools in ways that provide real value. blog.mmckenna.me/series/appli...

Here's some tangible productivity gains I've found for using AI! blog.mmckenna.me/microdosing-...

F-Droid and Google’s developer registration decree View Article | Join the HN Conversation Summary of HN discussion 🧵👇 #hacker-news

Can't wait for this!

Android being open is so amazing. blog.ctms.me/posts/2024-0...

Wrote about the hidden costs of using typealias for lambdas! blog.mmckenna.me/the-case-of-...

TIL about the "Minimize comments" option in Github PRs. Hide all pre-existing review comments on a PR to review without distraction.