Managing User Sessions & States

Welcome! In this lesson, we'll dive into managing user sessions and understanding authentication states in Firebase. These are crucial for building secure and user-friendly apps.

We'll cover how to:

• Monitor when a user logs in or out.
• Keep users logged in across app restarts.
• Update user profile information.

Firebase Authentication provides a powerful way to monitor a user's login status in real-time. This is done using an "authentication state listener."

• It tells your app if a user is currently logged in or logged out.
• It fires whenever the user's authentication state changes (e.g., login, logout, token refresh).
• This is perfect for updating UI elements or redirecting users.