building-native-ui

# 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 route-structure.md Route conventions, dynamic routes, groups, folder organization search.md Search bar with headers, useSearch hook, filtering patterns storage.md SQLite, AsyncStorage, SecureStore tabs.md NativeTabs, migration from JS tabs, iOS 26 features toolbar-and-headers.md Stack headers and toolbar buttons, menus, search (iOS only) visual-effects.md Blur (expo-blur) and liquid glass (expo-glass-effect) webgpu-three.md 3D graphics, games...