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feat(auth): add isCredentialLinkingEnabled for authenticated users#2319

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demolaf merged 3 commits into
version-10.0.0-beta03from
feat/credential-linking
Jun 8, 2026
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feat(auth): add isCredentialLinkingEnabled for authenticated users#2319
demolaf merged 3 commits into
version-10.0.0-beta03from
feat/credential-linking

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@demolaf

@demolaf demolaf commented May 8, 2026

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Closes #1823

Changes

Adds isCredentialLinkingEnabled to AuthUIConfiguration — allows any authenticated non-anonymous user to link additional providers to their account.

demo.mp4

@demolaf demolaf requested a review from russellwheatley May 8, 2026 15:33

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Code Review

This pull request introduces a credential linking feature, allowing users to associate multiple authentication methods with a single account. It includes a new configuration property, updated logic in the email provider, and a demo activity. Feedback suggests reverting the default emulator setting to false and removing hardcoded client IDs in the demo to improve portability.

Comment thread app/src/main/java/com/firebaseui/android/demo/MainActivity.kt Outdated
@demolaf demolaf changed the base branch from master to version-10.0.0-beta03-dev May 8, 2026 15:35
@demolaf demolaf changed the base branch from version-10.0.0-beta03-dev to version-10.0.0-beta03 May 8, 2026 15:35
@demolaf demolaf force-pushed the feat/credential-linking branch from 879625c to 6386e2e Compare June 5, 2026 09:35
@demolaf demolaf requested a review from just1and0 June 5, 2026 09:56

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LGTM

@demolaf demolaf merged commit bebc290 into version-10.0.0-beta03 Jun 8, 2026
10 checks passed
demolaf added a commit that referenced this pull request Jun 16, 2026
…2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates
demolaf added a commit that referenced this pull request Jun 29, 2026
…2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates
demolaf added a commit that referenced this pull request Jul 1, 2026
…2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates
demolaf added a commit that referenced this pull request Jul 1, 2026
…2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates
demolaf added a commit that referenced this pull request Jul 2, 2026
…2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates
demolaf added a commit to demolaf/FirebaseUI-Android that referenced this pull request Jul 2, 2026
…irebase#2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates
demolaf added a commit that referenced this pull request Jul 2, 2026
…ng (#2354)

* fix(auth): improve user identifier retrieval (#2314)

* fix(auth): improve user identifier retrieval

* updates

* fix: ensure that when selecting phone or email, it routes straight to that screen (#2311)

* fix: use secondary app if it is passed into FirebaseAuthUI (#2313)

* fix(auth): make AuthException messages customisable via AuthUIStringProvider (#2320)

* fix(auth): preserve linkDomain in email link ActionCodeSettings (#2321)

* fix(auth): log out before Facebook sign-in to clear stale cached token (#2322)

Co-authored-by: russellwheatley <russellwheatley85@gmail.com>

* Fix typo in README (#2325)

* fix(auth): emit AuthResult on sign-in success and fix MFA tooltip auto-open (#2326)

* fix(auth): update AuthState to reflect success or idle based on user result

* updates

* updates

* refactor: rename auth user state handler

* fix(auth): expose slot parameters through FirebaseAuthScreen (#2328)

* fix(auth): add configurable params for custom UI

- AuthMethodPicker
- EmailAuth
- PhoneAuth
- MFA Enrollment & Challenge

* fix(auth): add demo activities for email and phone authentication with customizable UI

* updates

* updates

* feat(auth): add customMethodPickerTermsContent slot to FirebaseAuthScreen (#2330)

* feat(auth): add termsContent slot to AuthMethodPicker for custom ToS UI

* feat(auth): add termsAccepted parameter to AuthMethodPicker for consent handling

* update example

* updates

* updates

* updates

* feat(auth): add isCredentialLinkingEnabled for authenticated users (#2319)

* feat(auth): add isCredentialLinkingEnabled for authenticated non-anonymous users

* t feat(app): add CredentialLinkingDemoActivity to sample app

# Conflicts:
#	app/src/main/AndroidManifest.xml

* updates

* feat(auth): surface GIdP password policy violations with actionable error messages (#2333)

* feat(auth): handle GIdP password policy violations with specific error messages

* updates

* updates

* cleanup

* fix(auth): allow SAML providers in AuthUIConfiguration (#2331)

* fix(auth): allow saml. prefixed provider IDs in AuthUIConfiguration validation

* updates

* feat(auth): add reauthentication flow with automatic operation retry (#2332)

* wip

# Conflicts:
#	auth/src/main/java/com/firebase/ui/auth/configuration/auth_provider/EmailAuthProvider+FirebaseAuthUI.kt
#	auth/src/main/java/com/firebase/ui/auth/ui/screens/FirebaseAuthScreen.kt

* feat(auth): add reauthentication flow with automatic operation retry

Adds AuthState.ReauthenticationRequired, withReauth(), and createReauthFlow()
to support sensitive operations that require recent sign-in. FirebaseAuthUI.delete()
and withReauth() automatically catch FirebaseAuthRecentLoginRequiredException,
emit the new state carrying the original operation as retryOperation, and
FirebaseAuthScreen presents a ModalBottomSheet overlay scoped to the user's
linked providers — no navigation away from the authenticated screen. On successful
reauthentication the original operation is retried automatically.

* test(auth): add e2e tests for reauthentication flow UI

* updates

* fix reviews

* update README

* feat(auth): implement `legacyFetchSignInWithEmail` configuration option (#2316)

* feat(auth): implement legacyFetchSignInWithEmail configuration option

* test: write tests for legacyFetchSignInWithEmail

* fix(pr): address reviewer feedback on email recovery routing

* refactor(pr): address reviewer feedback on legacy email recovery

* fix: cancellation callback + test

* chore: ignore kotlin cache

* chore: run demo app script from command line

---------

Co-authored-by: demolaf <demolafadumo@gmail.com>

* fix(auth): replace hardcoded loading state strings with translatable string resources (#2339)

* feat(auth): add localized loading messages for various sign-in states

* updates

* feat(auth): update sign-in methods to use AuthUIConfiguration for localized messages

* refactor: use periods to represent ellipsis not the unicode character

* refactor: use qualifiers, not base values in tests

* fix(auth): remember authStateFlow() to avoid resubscribing on every recomposition

* fix(auth): remember authStateFlow() in EmailAuthScreen to avoid resubscribing

* docs(auth): note FirebaseAuthUI.create() instability inside composables

---------

Co-authored-by: Russell Wheatley <russellwheatley85@gmail.com>
Co-authored-by: Nillan Sivarasa <nillan.sivarasa@gmail.com>
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Provide FlowParameters for linking credentials to authenticated users

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