Settings

The Settings screen provides user-configurable options stored in AsyncStorage.

Settings Context

src/contexts/settings-context.tsx provides a global settings context with:

• SettingsProvider — Wraps the app, loads saved settings on mount
• useSettings() — Hook to read and update settings

All settings are persisted to AsyncStorage and restored on cold launch.

Available Settings

Theme Preference

• Options: Light, Dark, Auto (system)
• Key: themePreference
• Effect: Controls useColorScheme() return value

Font Size

• Options: Configurable scale factor
• Key: fontSize
• Effect: Scales text throughout the app

Haptics (iOS only)

• Options: Enabled / Disabled
• Key: hapticsEnabled
• Effect: Gates all haptic feedback via useHaptics() hook
• Only shown on iOS (process.env.EXPO_OS === 'ios')

Push Notifications

• Options: Enabled / Disabled
• Key: notificationsEnabled
• Effect: Registers/unregisters device with TailSignal

Cache Management

• Clear React Query cache
• Removes all cached API responses
• Forces fresh data on next screen visit

Tab Persistence

The settings context also manages the last active tab:

• Saves the current tab segment when the user navigates
• Restores the last visited tab on cold launch
• Uses useSegments() from Expo Router to track the active tab

App Info

The Settings screen displays:

• App version (from expo-constants)
• Build number
• EAS update information (if available via expo-updates)