--- title: "Scalable UI in Android Automotive OS: The Panel Controller" url: https://daily.dev/posts/scalable-ui-in-android-automotive-os-the-panel-controller-92nsx5xd0 source_url: https://proandroiddev.com/scalable-ui-in-android-automotive-os-the-panel-controller-031e6d727c27 type: article source: "ProAndroidDev" published: 2026-06-24T15:40:37.139Z updated: 2026-06-24T15:41:01.543Z tags: ["android"] reading_time: 15 upvotes: 1 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Scalable UI in Android Automotive OS: The Panel Controller **[ProAndroidDev](https://daily.dev/sources/pand)** · 15 min read · 1 upvotes · 0 comments ## Summary A deep dive into the Panel Controller side of Android Automotive OS's Scalable UI framework. Covers how DecorPanelControllerBase and BaseTaskPanelController work, how to wire a custom View and Controller into CarSystemUI via Dagger, and how to build imperative panel behavior. Two proof-of-concept implementations are walked through: FlameSun, an animated AGSL shader rendered inside a DecorPanel with minimal controller logic, and FocusGlow, a dynamic glow border that tracks window focus using TaskStackListener, PanelPool, PanelUpdateConsumer, and AutoSurfaceTransaction to reposition its surface at runtime. Limitations such as no RRO-only View shipping, full CarSystemUI rebuilds for code changes, and no persistent state across SystemUI restarts are also discussed. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Scalable UI in Android Automoitve OS: From UI Embedding to System Window Orchestration](https://daily.dev/posts/scalable-ui-in-android-automoitve-os-from-ui-embedding-to-system-window-orchestration-fxghmgwj2) · ProAndroidDev · 0 upvotes · 0 comments - [Qt Interface Framework with a new Control Panel](https://daily.dev/posts/qt-interface-framework-with-a-new-control-panel-zky5q9uba) · Qt · 1 upvotes · 0 comments - [The Window Manager Lied Politely](https://daily.dev/posts/the-window-manager-lied-politely-1re8p9uqk) · ProAndroidDev · 1 upvotes · 0 comments --- Tags: [#android](https://daily.dev/tags/android) [View this post on daily.dev](https://daily.dev/posts/scalable-ui-in-android-automotive-os-the-panel-controller-92nsx5xd0)