[firebase_auth]: A headful operation is already in progress. Please wait for that to finish.

[a1573595]

Description

This issue occurs in the Flutter version of Firebase Auth. According to SelaseKay's description, adjustments must be made in the Android SDK, so create a ticket here.

Reference: firebase/flutterfire#17659

If the user performs additional operations, such as navigating to other pages or closing the browser, the login function cannot be called again, is it possible to provide a function to terminate the previous login operation?

Environment

Android Studio version: Android Studio Narwhal Feature Drop | 2025.1.2 Patch 1
Flutter Firebase Core: 4.0.0
Flutter: 3.32.8

Steps to reproduce

1. Click the Google Login button.
2. Use Android overview to close Chrome App.
3. Return to my App.
4. Click the Google Login button again.

Expected results

Cancels the already running operation and creates a new one.

Actual results

Get exception: A headful operation is already in progress. Please wait for that to finish.

Screenshots or Video

2025-08-25.10.34.31.mov

Code sample

import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';

class SampleScreen extends StatelessWidget {
  const SampleScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: ElevatedButton(
          child: const Text("Google Login"),
          onPressed: () async {
            final googleProvider = GoogleAuthProvider();

            await FirebaseAuth.instance
                .signInWithProvider(googleProvider)
                .then((value) {
                  debugPrint("test Google Login value: $value");
                  debugPrint("test Google Login profile: ${value.additionalUserInfo?.profile}");
                  debugPrint("test Google Login accessToken: ${value.credential?.accessToken}");
                })
                .onError((error, stack) {
                  debugPrint("test Google Login error $error");

                  ScaffoldMessenger.of(context).removeCurrentSnackBar();
                  ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(error.toString())));
                });
          },
        ),
      ),
    );
  }
}

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[lehcar09]

Hi @a1573595, thank you for reaching out. I tried reproducing the behavior using our Android quickstart app for Auth, however, I did not encounter the same issue. The app doesn't spawn separate a browser for login.

That said, it's not a native Firebase Android SDK issue. It's possible that this is an implementation/ configuration issue. I would suggest try raising it back to the Flutterfire team for further investigation.

I'll be closing this issue for now. Let me know is there's any concern or misunderstanding so we can re-open this issue. Thanks!

[a1573595]

Hi @a1573595, thank you for reaching out. I tried reproducing the behavior using our Android quickstart app for Auth, however, I did not encounter the same issue. The app doesn't spawn separate a browser for login.

That said, it's not a native Firebase Android SDK issue. It's possible that this is an implementation/ configuration issue. I would suggest try raising it back to the Flutterfire team for further investigation.

I'll be closing this issue for now. Let me know is there's any concern or misunderstanding so we can re-open this issue. Thanks!

Hello, I tried the Android quickstart app for Auth. Its example uses Google Play Services, not a standalone browser. The scenarios are different. For example, the video demonstrates that after disabling Google Services, you can still call the browser for authentication, without relying on Google Play Services.

2025-08-29.6.59.43.-.Compressed.with.FlexClip.mp4

[a1573595]

@lehcar09 In addition, SelaseKay, a staff member of Flutterfire, has also confirmed this issue. Can you communicate internally instead of going through me, an external user?

Reference: firebase/flutterfire#17659