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

[liuchong-94]

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2020.2.7f1
• Firebase Unity SDK version: 8.7.0
• Source you installed the SDK: unitypackage (.unitypackage or Unity Package Manager)
• Problematic Firebase Component: Auth (Auth, Database, etc.)
• Other Firebase Components in use: _____ (Auth, Database, etc.)
• Additional SDKs you are using: _____ (Facebook, AdMob, etc.)
• Platform you are using the Unity editor on: Windows (Mac, Windows, or Linux)
• Platform you are targeting: Android (iOS, Android, and/or desktop)
• Scripting Runtime: IL2CPP (Mono, and/or IL2CPP)

[REQUIRED] Please describe the issue here:

I use this example to log in apple id on Android.

Firebase.Auth.FederatedOAuthProviderData providerData =new Firebase.Auth.FederatedOAuthProviderData();
providerData.ProviderId = "apple.com";
providerData.Scopes = new List();
providerData.Scopes.Add("email");
providerData.Scopes.Add("name");
Firebase.Auth.FederatedOAuthProvider provider =
new Firebase.Auth.FederatedOAuthProvider();
provider.SetProviderData(providerData);
auth.SignInWithProviderAsync(provider).ContinueOnMainThread(task => {
if (task.IsCanceled) {
Debug.LogError("SignInWithProviderAsync was canceled.");
return;
}
if (task.IsFaulted) {
Debug.LogError("SignInWithProviderAsync encountered an error: " +
task.Exception);
return;
}

Firebase.Auth.SignInResult signInResult = task.Result;
Firebase.Auth.FirebaseUser user = signInResult.User;
Debug.LogFormat("User signed in successfully: {0} ({1})",
    user.DisplayName, user.UserId);

});

Everything works fine on Android. But when I pull up the authorization page and click the home button, I go back to my game from the desktop.Then when I call SignInWithProviderAsync again in the same way, I get an error ：

SignInWithProviderAsync encountered an error: System.AggregateException: One or more errors occurred. ---> System.AggregateException: One or more errors occurred. ---> Firebase.FirebaseException: A headful operation is already in progress. Please wait for that to finish.
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
---> (Inner Exception #0) System.AggregateException: One or more errors occurred. ---> Firebase.FirebaseException: A headful operation is already in progress. Please wait for that to finish.
--- End of inner exception stack trace ---
---> (Inner Exception #0) Firebase.FirebaseException: A headful operation is already in progress. Please wait for that to finish.<---
<---
UnityEngine.Logger:Log(LogType, Object)
MobileLoginService:b__13_0(Task1) System.Action1:Invoke(T)
Firebase.Extensions.c__AnonStorey9:<>m__0()
System.Func1:Invoke() Firebase.<RunAsync>c__AnonStorey11:<>m__0()
System.Action:Invoke()

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)

Steps to reproduce:

Have you been able to reproduce this issue with just the Firebase Unity quickstarts (this GitHub project)? Yes.
What's the issue repro rate? (eg 100%, 1/5 etc) 100%

What happened? How can we make the problem occur?
This could be a description, log/console output, etc.

1. Download and configure this github project to make it run

2. Modify the SignInWithProvider function:
   protected void SignInWithProvider(string providerId) {
   var providerData = new Firebase.Auth.FederatedOAuthProviderData();
   providerData.ProviderId = "apple.com";
   providerData.Scopes = new List() { "name", "email" };

      var provider = new Firebase.Auth.FederatedOAuthProvider();
      provider.SetProviderData(providerData);
      
      auth.SignInWithProviderAsync(provider).ContinueWithOnMainThread(signin_task => {
      if (LogTaskCompletion(signin_task, "SignInWithProvider")) {
        DebugLog("SignInWithProviderTask Completed:" + signin_task.IsCompleted);
      }
   
      if(signin_task.Exception != null) {
        DebugLog("SignInWithProviderTask - Exception: " + signin_task.Exception.Message);
        return;
      }
   
      DisplaySignInResult(signin_task.Result, 1);
   

   });
   }

3. Click SignInWith | Miscrosoft, open the browser and click the home button to return to the Android desktop, click app to return to the application, and click SignInWith | Miscrosoft again.

If you have a downloadable sample project that reproduces the bug you're reporting, you will
likely receive a faster response on your issue.

Relevant Code:

// TODO(you): code here to reproduce the problem

[paulinon]

Hi @liuchong-94,

Thanks for reporting this. While I try to replicate this issue, could you confirm if a similar behavior persists using the latest version of the SDK (8.10.1)?

[liuchong-94]

Hi @liuchong-94,

Thanks for reporting this. While I try to replicate this issue, could you confirm if a similar behavior persists using the latest version of the SDK (8.10.1)?

Thank you for your reply. I tested 8.10.1 and the same error occurred

[paulinon]

Hi @liuchong-94,

I haven't been able to replicate your issue yet because I'm facing an error when using the code you provided in Step 2. Could you confirm if the exact code returned no error on your end? It would be helpful if you provide a minimal, reproducible example so that it can be used as a baseline for troubleshooting.

[liuchong-94]

Hi, @paulinon ，
you can download the sample project here.
https://drive.google.com/file/d/1girOChQyZrIXuqRR9MEDXcxI0WQuKhTS/view?usp=sharing

There are two ways to use it.

1. You can configure google-services.json, GoogldSerivce-Info-plist etc and then build it. (I can't provide mine because it will be used in our official project)
2. Just replace UIHandler.cs in your project, I only modified the SignInWithProvider function.