signInWithSavedCredentials

Attempts to sign in using credentials saved in Android's Credential Manager.

This method leverages Android's Credential Manager API to retrieve saved credentials (email/password or Google account) and authenticate the user automatically. This enables seamless "one-tap" sign-in without requiring the user to re-enter credentials.

Behavior

• Shows the Credential Manager UI with saved credentials

• User selects a saved credential to sign in

• Authenticates with Firebase using the selected credential

• Saves/updates the credential in Credential Manager after successful sign-in

Requirements

• Requires an Activity context for showing the credential picker UI

• Credentials must have been previously saved via Credential Manager

• User must have at least one saved credential

Exceptions

• Throws CancellationException if user cancels the credential picker

• Throws NoCredentialException if no saved credentials are found

• Throws FirebaseAuthException if authentication with saved credentials fails

Example

// In your login ViewModel
fun autoSignIn() {
    _uiState.updateStateWith {
        authRepository.signInWithSavedCredentials(activity)
    }
}

Parameters

Throws