Question 1

How to add Facebook login with FirebaseUI in a SwiftUI app?

Accepted Answer

Use the FirebaseFacebookSwiftUI module from Swift Package Manager, then configure URL types with your Facebook App ID in Xcode's Info.plist and enable Keychain Sharing, as outlined in the sample project configuration steps.

Question 2

Does FirebaseUI support realtime Firestore updates in SwiftUI?

Accepted Answer

No, FirebaseUI's realtime data binding for Firestore is only available through UIKit components using CocoaPods; for SwiftUI, you'd need to bridge UIKit or implement custom solutions, limiting native integration.

Question 3

FirebaseUI vs building custom Firebase integration for iOS: which is better?

Accepted Answer

FirebaseUI accelerates development with pre-built UI components but may lack customization; custom integration offers full control but requires more boilerplate code and maintenance, especially for complex auth and data sync flows.

Question 4

How to debug FirebaseUI authentication when it's not working?

Accepted Answer

Check that GoogleService-Info.plist is correctly added, URL types are configured for OAuth providers, and Firebase Console settings match, as errors often stem from missing plist entries or incorrect app IDs in Info.plist.

Question 5

Can I use FirebaseUI with Combine for state management?

Accepted Answer

FirebaseUI's UIKit data binding components don't natively integrate with Combine; you may need to wrap them or use custom code to bridge Firebase realtime updates with Combine publishers, adding complexity.

Question 6

What iOS versions are supported for FirebaseUI SwiftUI authentication?

Accepted Answer

FirebaseUI's SwiftUI components require iOS 17.0+ and Xcode 15+, as stated in the installation notes, so older iOS versions need alternative approaches or UIKit-based solutions.

Firebase UI

What is Firebase UI?

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