Reference
The reference describes Day’s controls, services, and development tools, including their APIs and platform limits. Browse by topic to find the contract for a component or capability.
The sidebar uses the same topic groups as this index.
For exact signatures and method lists, open the Rust API reference. Use the how-to guides for task instructions, or explanations to understand Day’s programming model.
Core UI components
Build forms, arrange controls, and display collections.
Navigation and windows
Connect screens and present actions, panels, and windows.
App concepts and behavior
Share commands, manage interaction, and make the app accessible and localizable.
Text and graphics
Style text, draw custom content, animate values, and bundle assets.
Optional UI components
Add charts, animation, media, styled-text editing, settings, and embedded views.
App services and storage
Use the clipboard, save data, connect to services, and report app activity.
Optional device features
Use cameras, speech, permissions, biometrics, sensors, location, sound, and haptics.
Platforms and requirements
Check support, SDK requirements, and target-specific behavior.
Build and developer tools
Configure projects, build and package apps, and automate development.
API examples and terminology
Browse API examples and look up Day terminology and extension conventions.