native-data-fetching

API calls and offline data fetching in Expo React Native are handled by integrating React Query for caching and offline synchronization. This ensures network requests are cached locally and retried with backoff when connectivity is restored.

The best way to manage authentication tokens in React Native is using expo-secure-store. This securely persists tokens on the device, allowing your fetch wrapper to automatically inject them into headers for authenticated API requests.

To retry failed network requests with backoff in React Native, implement typed HTTP exceptions and use React Query's built-in retry options. This automatically re-attempts failed fetch requests before surfacing hard errors to the user.

Yes, React Query works with offline support and caching for mobile apps. It provides built-in mechanisms to cache API responses locally and synchronize data once network connectivity is restored, ensuring continuous app functionality.

To configure environment variables for API networking in Expo, define EXPO_PUBLIC_* variables in your environment. This allows you to dynamically swap API endpoints and network configurations between development and production builds.