Get started with Jetpack Compose

Jetpack Compose is the modern toolkit for building Android UI, simplifying the development of apps that adapt to any display size.

• Overview: See the resources available to Compose developers.
• Tutorial: Get started with Compose by building a basic UI.
• Quick Guides: Try out our fast and focused guides, designed to get you to your goal as quickly as possible.

Foundation

• Thinking in Compose: How the declarative approach of Compose is different from the view-based approach you may have used in the past. Build a mental model of working with Compose.
• Managing state: Setting and using state in your Compose app.
• Lifecycle of composables: Lifecycle of a composable, and how Compose determines whether it needs to be redrawn.
• Modifiers: Use modifiers to augment or decorate your composables.
• Side-effects in Compose: Ways to manage side-effects.
• Jetpack Compose Phases: The steps Compose goes through to render your app's UI, and how to use that information to write efficient code.
• Architectural layering: The architectural layers that make up Jetpack Compose and the core principles that informed the design of Compose.
• Performance: Avoid the common programming pitfalls that can degrade app performance.
• Semantics in Compose: The semantics tree, which organizes your UI in a way that can be used by accessibility services and testing frameworks.
• Locally scoped data with CompositionLocal: Use CompositionLocal to pass data through the composition.

Adaptive UI

• Build adaptive apps: Learn the core principles of creating layouts optimized for any display size, including phones, tablets, foldables, and more.
• Apply proven layouts: Use canonical layouts like list-detail and supporting pane for optimized apps on large screens.
• Adaptive navigation: Implement navigation patterns that automatically adjust to the available display space.

Development environment

• Android Studio with Compose: How to et up your development environment to use Compose.
• Tooling for Compose: Android Studio's new features to support Compose.
• Kotlin for Compose: Kotlin-specific idioms work with Compose.
• Compare Compose and view metrics: How migrating to Compose can affect your app's APK size and runtime performance.
• Bill of Materials: Manage all your Compose dependencies by specifying only the BOM's version.

Design

• Layouts: Compose layout components and how to design your own.
  • Layout basics: The building blocks for a straightforward app UI.
  • Material Components and layouts: Material components and layouts in Compose.
  • Custom layouts: Take control of your app's layout and design a custom layout of your own.
  • Alignment lines: Create custom alignment guides to precisely align and position your UI elements.
  • Intrinsic measurements: How to query for information about child elements before measuring them because Compose measure UI elements only once per pass.
  • ConstraintLayout: Use ConstraintLayout in your Compose UI.
• Design Systems: Implement a design system and give your app a consistent look and feel.
  • Material Design 3: Implement Material You with the Compose implementation of Material Design 3.
  • Migrating from Material 2 to Material 3: Migrate your app from Material Design 2 to Material Design 3 in Compose.
  • Material Design 2: Customize the Compose implementation of Material Design 2 to fit your product's brand.
  • Custom design systems: Implement a custom design system in Compose and adapt existing Material Design composables for the new design system.
  • Anatomy of a theme: Lower-level constructs and APIs used by MaterialTheme and custom design systems.
• Lists and grids: Compose options for managing and displaying lists and grids of data.
• Text: Main options in Compose for displaying and editing text.
• Graphics: Compose features for building and working with custom graphics.
• Animation: Compose options for animating your UI elements.
• Gestures: Build a Compose UI that detects and interacts with user gestures.
• Handling user interactions: How Compose abstracts low-level input into higher-level interactions so you can customize how your components respond to user actions.

Adopting Compose

• Migrate view-based apps: Migrate your view-based app to Compose.
  • Migration strategy: How to safely and incrementally introduce Compose into your codebase.
  • Interoperability APIs: Compose APIs to help you combine Compose with a view-based UI.
  • Other considerations: Theming, architecture, testing, and other considerations while migrating your view-based app to Compose.
• Compose and other libraries: How to use view-based libraries in your Compose content.
• Compose architecture: Implement the unidirectional flow pattern in Compose, implement events and state holders, and work with ViewModel in Compose.
• Navigation: Use NavController to integrate the Navigation component with your Compose UI.
• Resources: Work with your app's resources in your Compose code.
• Accessibility: Accommodate users with accessibility requirements.
• Testing: Test your Compose code.
  • Testing cheat sheet: A quick reference of useful Compose testing APIs.

Additional resources

• Get setup
• Curated learning pathway
• Compose API guidelines
• API reference
• Codelabs
• Sample apps
• Videos