Expo UI Guidelines

When to Use

• You are building a native-feeling Expo Router application and need guidance on navigation, controls, effects, or platform-specific UI.
• You need to decide whether Expo Go is sufficient or a custom native build is actually required.
• The task involves modern Expo UI patterns across animations, tabs, headers, storage, media, or visual effects.

References

Consult these resources as needed:

references/
  animations.md          Reanimated: entering, exiting, layout, scroll-driven, gestures
  controls.md            Native iOS: Switch, Slider, SegmentedControl, DateTimePicker, Picker
  form-sheet.md          Form sheets in expo-router: configuration, footers and background interaction. 
  gradients.md           CSS gradients via experimental_backgroundImage (New Arch only)
  icons.md               SF Symbols via expo-image (sf: source), names, animations, weights
  media.md               Camera, audio, video, and file saving