Arcore-unity-sdk: ARCore 1.2 throws InvalidOperationException when using with .NET 4.6

[dzak83]

Hi,
Every time I switch to .NET 4.6 the new ARCore 1.2 is throwing InvalidOperationException from session config.

StackTrace:
InvalidOperationException: Handle is not initialized.
System.Runtime.InteropServices.GCHandle.Free () (at :0)
GoogleARCoreInternal.ARCoreAndroidLifecycleManager.SetConfiguration (GoogleARCore.ARCoreSessionConfig config) (at Assets/GoogleARCore/SDK/Scripts/Managers/ARCoreAndroidLifecycleManager.cs:83)
GoogleARCoreInternal.ARCoreAndroidLifecycleManager.EnableSession () (at Assets/GoogleARCore/SDK/Scripts/Managers/ARCoreAndroidLifecycleManager.cs:112)
GoogleARCoreInternal.ARCoreAndroidLifecycleManager.CreateSession (GoogleARCore.ARCoreSession sessionComponent) (at Assets/GoogleARCore/SDK/Scripts/Managers/ARCoreAndroidLifecycleManager.cs:101)
GoogleARCore.ARCoreSession.Start () (at Assets/GoogleARCore/SDK/Scripts/ARCoreSession.cs:42)

Thanks,
Smart AR Home team
http://smartarhome.com/

[dzak83]

In the instant preview I can still see the background texture but when deployed to the device it's just a black screen.

Thanks,
Smart AR Home team
http://smartarhome.com/

[dzak83]

And here is the fix in case someone will hit the same issue:

\GoogleARCore\SDK\Scripts\Managers\ARCoreAndroidLifecycleManager.cs -> public void SetConfiguration(ARCoreSessionConfig config):
Change
handle.Free();
to

if (handle.IsAllocated)
{
        handle.Free();
}

btw, nice ARCore 1.2 update today Google!! So much nice stuff! :)

Thanks,
Smart AR Home team
http://smartarhome.com/

[pablisho]

Hi, thanks for the bug report and proposing a fix. I added it to our internal tracking to fix it for next releases.

[small-potatoes]

We love it when individuals report a problem, solve the problem they reported, and give us a compliment! As pablisho alluded to we will have this fixed next release :)

P.S. I like the music in your website's video dzak83!

[dzak83]

Thanks! I am glad I could help :)

[Storm-Develop]

Hey I am experiencing the same issue
https://github.com/google-ar/arcore-unity-sdk/blob/99d51802ee27cae1a98812f4c04ae8b0ac7e1e1b/Assets/GoogleARCore/SDK/Scripts/Managers/ARCoreIOSLifecycleManager.cs#L75-L77

This is now empty I am not sure why=) and I am having the following error when trying to run HelloAR project

[pablisho]

Hi the error you show references AndroidLifecycleManager and the code you reference is IOSLifecycleManager. This issue will be fixed in the next release.

[Storm-Develop]

Oh yeah, my bet. Found now where the fix should go. Thank you.

[pablisho]

Hi, this issue has been fixed in ARCore Unity SDK v1.3.0. Feel free to reopen if you still experience the issue.