Android receives login failure when returning from background to foreground

[DavidWeng916]

Hi, I would like to ask a question, when I publish to Android platform, I found that when my app goes back to the background and then back to the foreground, the VRoid SDK itself triggers a login failure, but I actually don't call any login related APIs.
How can I solve this problem? I am using VRoid SDK version 0.1.4

[nyamadan]

Him the server process seems to have succeeded because it came back from the background.
There may be an error inside SDK.

Could you try ApiController.Logout?

[DavidWeng916]

Hello @nyamadan, I'm not quite sure why I'm calling ApiController.Logout?
But I just tested it using the example project attached to the VRoid SDK (Assets/VRoidSDK/Examples/CharacterModelExample/Scenes/Example.unity) and it seems to have the same problem.

The following is my testing process

1. Logout first
2. Then login
3. Return the app to the background
4. Tap the app icon on the desktop again to return to the foreground

Then we can see in the program ApiController.cs
The function LoginToVroidHub in the program，Inside _oauthClient.Login(onSuccess, onFailed) the onFailed will be called
I put log in onFailed this callback, please refer to the attached picture

Whenever I go back to the foreground from the background onFailed is called, which causes some misjudgment.
===== Error e:Pixiv.VroidSdk.Browser.RegisterCodeFailedException: getData is null UnityEngine.Logger:Log(LogType, Object) VRoidSDK.Examples.Core.Controller.<>c__DisplayClass16_0:<LoginToVroidHub>b__6(Exception) Pixiv.VroidSdk.Browser.AndroidBrowser:OnApplicationFocus(Boolean)

Then when I click on the menu above, an error message pops up.

For this test I am using VRoid SDK 0.2.0.
Because of this problem, I see another problem is about the error message language sometimes will be Japanese and sometimes will be English, and then I just found out that later sometimes there is also Chinese QQ

[nyamadan]

ApiController.Logout clears local data.
Sometimes this operation solves problem, but not in this case.

===== Error e:Pixiv.VroidSdk.Browser.RegisterCodeFailedException: getData is null UnityEngine.Logger:Log(LogType, Object) VRoidSDK.Examples.Core.Controller.<>c__DisplayClass16_0:<LoginToVroidHub>b__6(Exception) Pixiv.VroidSdk.Browser.AndroidBrowser:OnApplicationFocus(Boolean)

Thank you, this log is useful for me.
It seems to fail to handle android browser.

I'll investigate.

[DavidWeng916]

Thank you very much 🙏

[DavidWeng916]

Hello, about this issue, are there any follow-up results of the survey?

[nyamadan]

We created an issue ticket in our task system and assigned an engineer.

It seems that getIntent().getData() is returning null.
https://stackoverflow.com/questions/28445262/getintent-getdata-null-for-unity-app