Authentication Flow
Most real-world applications require an authentication flow, showing a login stack for unauthenticated users and a separate main app stack once the user is logged in. This tutorial explains how to implement this pattern using React Navigation.
Structuring Auth and App Stacks
The recommended approach is to conditionally render either an authentication stack or the main app stack based on the user’s authentication state.
Building the Auth Stack
Building the Main App Stack
Managing Authentication State
Authentication state is typically managed using Context API or a state management library like Redux, combined with secure token storage to persist login sessions between app launches.
Handling Session Persistence
On app startup, stored authentication tokens should be checked and validated before deciding which stack to display, often accompanied by a loading screen while this check occurs.
Preventing Back Navigation to Login
Since the auth and main stacks are rendered conditionally rather than nested within each other, users cannot accidentally navigate back to the login screen after successfully authenticating.
Conclusion
Implementing a proper authentication flow with separate auth and main stacks ensures a clean, secure navigation experience that correctly reflects the user’s login state throughout the application.
