👀 Want to see a preview of what's coming up in #JetpackCompose? We heard you that debugging shared elements is tricky. In 1.11.0-alpha03, a new composable LookaheadAnimationVisualDebugging was added. Wrap your SharedTransitionLayout to add visual cues to track down those hard to debug issues. 🐛⤵️

I've converted my side project to Navigation 3 (or at least, a similar close fork of Navigation 3), which you can try out on the web here! alex.vanyo.dev/composelife Two more complex scene ideas I've been playing around with: A SceneStrategy wrapping another SceneStrategy, and derived entry lists.

Navigation 3 is here, and yes — it changes things 😅 Alex Vanyo & Don Turner break down what’s new, what’s better, and what not to do. Watch the VOD → youtu.be/I9Ws2Lxv0dw

Navigation 3 sets the stage for navigating with scenes! Be sure to tune in to @codewiththeitalians.it at cwti.link/twitch now to see @donaldturner.bsky.social and myself experiment with Navigation 3!

Every day this week we're publishing content to help you get started with Nav3. android-developers.googleblog.com/2025/12/lear.... Got questions? Post them using #AskAndroid and we'll answer them live at 9am PST on Friday here: www.youtube.com/live/JsugLEM....

A small change that flew under the radar for me for #JetpackCompose: calling setContent in a test more than once doesn't crash now! It's still a bit awkward to test Activity recreation, but the workaround is a lot easier now: issuetracker.google.com/271226817#co...

My talk on Navigation 3 from #dcldn25 is live (very impressive publishing from the droidcon team!). www.youtube.com/watch?v=j1Oi...

Anyone have a lint rule that warns against doing with(dispatchers.IO) because you almost certainly wanted withContext(dispatchers.IO) instead? Asking for someone who did something silly: github.com/alexvanyo/co...

The recording from my talk on how to handle configuration changes in Compose at #dcnyc25 is out! Hopefully this helps explain what android:configChanges is responsible for in #AndroidDev and why it's important to know what promises you make when setting it. www.youtube.com/watch?v=K5-9...

A response to the section on "How Can I Determine the Size and Position of Descendants of Peers?" Using onGloballyPositioned (or onSizeChanged, or similar modifiers) like this is a quick way to get yourself into trouble with layouts that take multiple frames to resolve that can flash or look janky.

Did you know... Android Studio has introduced resizable previews for Compose previews? Allowing you to test your layouts across the spectrum of device sizes easily inside Android Studio. 💻 developer.android.com/studio/previ...

It was great to see both familiar faces and new ones at #dcnyc25 last week - especially to see how everyone's figuring out what #AndroidDev will look like with the new tools are moving at a blistering speed. The slides for my talk are available here: alex.vanyo.dev/talks/configurationchanges

I'm excited to be speaking at #DroidconNYC next Thursday, hope to see you there! I'll be covering how to handle configuration changes in Compose, and specifically trying to answer the question of what you should put in android:configChanges and - probably more importantly - why. #AndroidDev

Thinking about configuration changes isn't optional. Imagine a website trying to prevent the browser window from being resized or breaking when it does. Android apps can't disable configuration changes and need to react to them correctly without losing state using the tools available.

Hopefully you have a bunch of ideas to improve your apps from the first day of #GoogleIO Day 2 starts soon, be sure to tune in to learn about what's new in developer tools and my favorite topic, why and how to build adaptive! #AndroidDev

Scenes! If there's only one concept to call out for Navigation 3, it's scenes. The abstraction layer allows showing multiple panes at a time, and in different ways. It's the integration hook that integrates Navigation3 with ListDetailPaneScaffold in a flexible, satisfying way.

runComposeUiTest has a nice change in #JetpackCompose 1.9.0-alpha01 - the test body block now suspends! So you no longer have to do a nested runComposeUiTest { runTest { /* suspending test code */ } }, which could be funky since runComposeUiTest had an internal runTest before that wasn't exposed.

A small but extremely useful foundational API added in #JetpackCompose 1.8: LocalWindowInfo.current.containerSize It's the best way to get the size of the window, which should form the basis for any breakpoint logic for top-level layouts like window size classes. #AndroidDev

Days since forgetting a call to "key" in a loop and causing a hard to diagnose bug: 0 #JetpackCompose

🚀 Big news for Android devs using Jetpack Compose! Media3 just dropped version 1.6.0, and it includes a brand new artifact: media3-ui-compose! Finally, seamless and customizable video playback directly in your Compose apps. 🎬 #AndroidDev #JetpackCompose #Media3

We had so much fun filming #TheAndroidShow in Barcelona, at #MobileWorldCongress last week, we can't wait to share it with you! 🥳 Tune in TODAY 🚀 to watch the livestream: goo.gle/tas-mar25

So the idea is with strong skipping, === is an extremely fast check. Imagine you have a lazy list and an array with a couple of hundred items, 3 on screen. Depending on the cost of equals, it's faster to let that higher level recomposition happen with ===.

UI that isn't tested is UI that can break. There are Compose techniques for each part of testing - quick verification when iterating, and automating both visual tests and behavior tests. And coming in Compose 1.8, don't miss the new DeviceConfigurationOverride.WindowInsets for testing insets!

A 🧵 announcement: With the Jetpack Compose 1.8. beta01 release, you may notice that a significant number of APIs that were previously experimental, have been graduated to stable.

Android 16 will have some big changes around restricting orientation and aspect ratio by respecting the user's preferred orientation in more cases. Apps can no longer rely on assuming they have a specific aspect ratio to render in. For more details: android-developers.googleblog.com/2025/01/orie...

After figuring out how to make the coordinates work, it's so satisfying to use a live-updating drag and drop that previews where the dropped content will go.

Days since confusing myself with different frames of references and coordinate systems in Compose: 0

In-between traveling and holiday get-togethers, I finished up Advent of Code for the first time! And since I haven't done it before, now I have 9 years of past puzzles to work through (and without the pressure to start them at the exact time they open)

📽️🎞️ Aaand that's a wrap on our "Compose Tips for Delightful UI" YouTube series for this year 🥳 here's a quick summary of everything we've covered in '24! See you in '25 and happy holidays 🎄 medium.com/androiddevel...

Editing some Java source, and this is the correct syntax for an annotation on a parameter with a fully qualified class name!? What? "android.graphics.@NonNull Insets safeInsets"

Today was a git cleaning day. I found local git branches I had that don't have an upstream, and then tried to figure out what I was doing and why. Mostly random experiments or old intermediate WIP that I didn't clean up, but there were also some neat things I completely forgot I started!

#AdventOfCode day 8: I am very glad I had IntOffset available this time!

#AdventOfCode day 6: I miss IntOffset. I should import those nice dimensional helper classes in Compose for the rest of the days...

Frustrating experience but funny once I realized what was happening: I copied a line of code in a browser, switched desktops to Android Studio, and pasted... but it pasted an old thing! Copy and paste in AS to test... that works fine. Go back to browser, copy, paste in AS, and it still doesn't work.

Annoyed with merge conflicts when updating versions in libs.versions.toml? If you add a "#libraryName" above each version entry, you can avoid the merge conflicts caused by adjacent lines being updated independently since each simple version bump will have an unchanged line in-between another.

In case you're wondering what's new with the Preview Screenshot Testing tool, some updates announced at Droidcon London! THREAD! You'll like #3.😁

Here's a fun #AndroidDev architecture design problem: Implement a slider that edits state that is stored on disk. I think working through this task can reveal a lot of insight for why building great UI around asynchronous tasks can inherently be tricky and how tradeoffs are necessary.

Probably a weird flex, but telephoto can now adjust its restored zoom & pan to account for screen size changes and rotations. Plus it's compatible with Coil 3 now: github.com/saket/teleph...

Something a bit hidden in the changes for the latest 4.14-beta-1 Robolectric release: there's a new RobolectricTestParameterInjector runner that works with github.com/google/TestP...! It's built on the latest 1.18 release of TPI which exposed a couple methods needed for the integration #androiddev