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Compose Performance

https://github.com/skydoves/compose-performance

📚 Curated articles to understand Compose internals and optimize Jetpack Compose performance.

Understanding the Jetpack Compose mechanism is important, as it directly impacts your application’s performance. Jetpack Compose introduces a new paradigm in declarative UI, driving innovative UI techniques. While the benefits of declarative UI are significant, it also presents challenges in terms of stability and UI updates. This issue is not unique to Jetpack Compose; it also affects other declarative UI frameworks like React and Flutter. These challenges are inherent to all frameworks that use a declarative approach and we can learn across all those various frameworks.

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Jetpack Compose 1.12 has been released

Jetpack Compose 1.12 has been released! So many new goodies to look at:

🌅 Mesh Gradient support – along with support inside Android Studio
✌🏻 Interactive Two-Stage Transitions
💬 Many text features such as editable text formatting and text selection

https://twitter.com/riggaroo/status/2087850931580760139

https://android-developers.googleblog.com/2026/08/jetpack-compose-august-2026-release.html

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dejavu

A lightweight framework for tracking and asserting against Jetpack Compose recompositions.

https://dejavu.mmckenna.me

https://github.com/himattm/dejavu

Dejavu is a test-only library that turns recomposition behavior into assertions. Tag your composables with standard Modifier.testTag(), write expectations against recomposition counts, and get structured diagnostics when something changes — whether from a teammate, a library upgrade, an AI agent rewriting your UI code, or a refactor that silently destabilizes a lambda.

  • Zero production code changes — just Modifier.testTag()
  • One-line test setup — createRecompositionTrackingRule()
  • Rich diagnostics — source location, recomposition timeline, parameter diffs, causality analysis
  • Per-instance tracking — multiple instances of the same composable get independent counters

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Compose hot reload

https://github.com/JetBrains/compose-hot-reload/releases/tag/v1.2.0-alpha01

This release introduces a brand-new Model Context Protocol (MCP) server that enables AI agents to interact with a running Compose application in real time.

В выпуске v1.2.0-alpha01 представлен новый сервер Model Context Protocol (MCP), который позволяет агентам ИИ взаимодействовать с запущенным приложением Compose в режиме реального времени. Сервер предоставляет различные инструменты, например:

  • status — получение текущего статуса приложения; 1
  • take_screenshot — создание снимка экрана; 2
  • get_semantic_tree — просмотр дерева компонентов пользовательского интерфейса; 3
  • click и long_click — щелчок и длительное нажатие на элемент интерфейса; 4
  • type_text — замена содержимого текстового поля; 5
  • scroll и scroll_to_index — прокрутка внутри прокручиваемого компонента. 6

Сервер подключается к уровню оркестрации горячей перезагрузки и запускается с помощью задачи hotMcpServer Gradle. JetBrains Runtime 25 теперь используется как версия JBR по умолчанию для горячей перезагрузки. Также внесены изменения в инструменты разработчика и Gradle.