Exception when opening sceneview fragment, after the activity is already running and has shown other things #7

morhenny · 2022-01-28T19:03:39Z

morhenny
Jan 28, 2022

Intitial Question:

So I have been in the process of transitioning my AR Project from sceneform to sceneview and I ran into an error. Since I am not sure if that is not yet supported or me doing something wrong, I figured I'd ask here first.

So my app has one MainActivity and a few fragments, but when I start my app it doesn't go straight to AR, but it starts a normal screen first, from where I navigate to the ArFragment later.

When I now am trying to run my app with code similar to your samples, I am getting the error that Camera permission result must be registered before Activity resume

So now I am wondering, with sceneview automatically handling those permissions, is it implemented that the ArFragment needs to be displayed as the first fragment in the app, or am I missing something?

This is the stacktrace: https://pastebin.com/FsMHgBpZ

Answered by ThomasGorisse

Feb 14, 2022

Fixed
db586eb - New CameraPermission and ARCore install/update system. Called automatically and handles creation success or possible fallback like 3D only usage:

View full answer

morhenny · 2022-01-28T19:04:44Z

morhenny
Jan 28, 2022
Author

Yes I did get rid of all of the ArFragment code and yes I am navigating to the Fragment that has the SceneView, after the mainactivity is already running and doing other things. Is that not intended to be possible and do I need to create another Activity for my AR stuff?

1 reply

ThomasGorisse Jan 28, 2022
Maintainer

Just call this on your main/global activity onCreate() or your fragment onCreateView():

ARCore.registerForCameraPermissionResult(Activity)

Don't worry, this will not initiate anything around SceneView nor ARCore and will not trigger the camera permission ask.
This call only do that:

activity.registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
...
}

The view will automatically launch the camera permission prompt only on first attached to your fragment or activity

ThomasGorisse · 2022-01-28T19:12:59Z

ThomasGorisse
Jan 28, 2022
Maintainer

######################################################################
# Camera permission result must be registered before Activity resume #
# #
# - Add the ArSceneView before onResume() #
# OR #
# - Add this call in your Activity onCreate(): #
# #
# ARCore.registerForCameraPermissionResult(this) #
# #
######################################################################

This message should appear only if you add the ArSceneView programatically after the Fragment/Activity.onResume() call.
This is because ArSceneView handles all the permissions requests for you by using the Android call to registerForActivityResult() which throws an exception if you call it after the Fragment/Activity.onResume() was called.

3 replies

morhenny Jan 28, 2022
Author

Since my ArSceneView is in a fragment that will be navigated to, later on, I don't think I can add it before the first onResume() is called, or please correct me here if I am wrong.

I did add the "ARCore.registerForCameraPermissionResult(this)" to my MainActivity's onCreate, but that did result in the same error stacktrace.

ThomasGorisse Jan 28, 2022
Maintainer

Do you still have this line?
java.lang.IllegalStateException: LifecycleOwner de.-.ar_navigation.MainActivity@adc56a5 is attempting to register while current state is RESUMED. LifecycleOwners must call register before they are STARTED.

morhenny Jan 28, 2022
Author

This is the exact stacktrace, after adding it:

E/AndroidRuntime: FATAL EXCEPTION: main
Process: de.morhenn.ar_navigation, PID: 28795
android.view.InflateException: Binary XML file line #36 in de.morhenn.ar_navigation:layout/fragment_augmented_reality: Binary XML file line #36 in de.morhenn.ar_navigation:layout/fragment_augmented_reality: Error inflating class io.github.sceneview.ar.ArSceneView
Caused by: android.view.InflateException: Binary XML file line #36 in de.morhenn.ar_navigation:layout/fragment_augmented_reality: Error inflating class io.github.sceneview.ar.ArSceneView
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at android.view.LayoutInflater.createView(LayoutInflater.java:858)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1010)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:965)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1127)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
at android.view.LayoutInflater.inflate(LayoutInflater.java:538)
at de.morhenn.ar_navigation.databinding.FragmentAugmentedRealityBinding.inflate(FragmentAugmentedRealityBinding.java:63)
at de.morhenn.ar_navigation.AugmentedRealityFragment.onCreateView(AugmentedRealityFragment.kt:67)
at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2995)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:523)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1840)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1764)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1701)
at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:488)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:7839)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
Caused by: java.lang.AssertionError: ######################################################################
# Camera permission result must be registered before Activity resume #
# #
# - Add the ArSceneView before onResume() #
# OR #
# - Add this call in your Activity onCreate(): #
# #
# ARCore.registerForCameraPermissionResult(this) #
# #
######################################################################
java.lang.IllegalStateException: LifecycleOwner de.morhenn.ar_navigation.MainActivity@adc56a5 is attempting to register while current state is RESUMED. LifecycleOwners must call register before they are STARTED.
at io.github.sceneview.ar.ARCore.(ARCore.kt:63)
at io.github.sceneview.ar.ARCore.(ARCore.kt:31)
at io.github.sceneview.ar.ArSceneView.(ArSceneView.kt:58)
at io.github.sceneview.ar.ArSceneView.(ArSceneView.kt:37)
at io.github.sceneview.ar.ArSceneView.(Unknown Source:13)
... 26 more
E/FATAL: A fatal crash caused the app to stop
android.view.InflateException: Binary XML file line #36 in de.morhenn.ar_navigation:layout/fragment_augmented_reality: Binary XML file line #36 in de.morhenn.ar_navigation:layout/fragment_augmented_reality: Error inflating class io.github.sceneview.ar.ArSceneView
Caused by: android.view.InflateException: Binary XML file line #36 in de.morhenn.ar_navigation:layout/fragment_augmented_reality: Error inflating class io.github.sceneview.ar.ArSceneView
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at android.view.LayoutInflater.createView(LayoutInflater.java:858)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1010)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:965)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1127)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
at android.view.LayoutInflater.inflate(LayoutInflater.java:538)
at de.morhenn.ar_navigation.databinding.FragmentAugmentedRealityBinding.inflate(FragmentAugmentedRealityBinding.java:63)
at de.morhenn.ar_navigation.AugmentedRealityFragment.onCreateView(AugmentedRealityFragment.kt:67)
at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2995)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:523)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1840)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1764)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1701)
at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:488)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:7839)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
Caused by: java.lang.AssertionError: ######################################################################
# Camera permission result must be registered before Activity resume #
# #
# - Add the ArSceneView before onResume() #
# OR #
# - Add this call in your Activity onCreate(): #
# #
# ARCore.registerForCameraPermissionResult(this) #
# #
######################################################################
java.lang.IllegalStateException: LifecycleOwner de.morhenn.ar_navigation.MainActivity@adc56a5 is attempting to register while current state is RESUMED. LifecycleOwners must call register before they are STARTED.
at io.github.sceneview.ar.ARCore.(ARCore.kt:63)
at io.github.sceneview.ar.ARCore.(ARCore.kt:31)
at io.github.sceneview.ar.ArSceneView.(ArSceneView.kt:58)
at io.github.sceneview.ar.ArSceneView.(ArSceneView.kt:37)
at io.github.sceneview.ar.ArSceneView.(Unknown Source:13)
... 26 more

morhenny · 2022-01-28T19:59:36Z

morhenny
Jan 28, 2022
Author

@ThomasGorisse I made a small sample project, that has 2 fragments and navigates between the 2 like I do and has the same exception:
https://github.com/morhenny/sceneview_issue_sample

0 replies

ThomasGorisse · 2022-01-28T21:51:15Z

ThomasGorisse
Jan 28, 2022
Maintainer

I'm totally sorry about that but I made a big mistake on the permission activity result registering at the ArSceneView init without checking for already registered activity.

We are near from releasing the 0.1.0 with awesome new features and the only missing part wich taht missing for this version is now available: https://github.com/romainguy/kotlin-math/releases/tag/v1.2.0

So, if you can wait a little we will fix your issue on that release.

1 reply

morhenny Jan 29, 2022
Author

Honestly, I am kind of glad to hear that, at least it doesn't mean I am seeing ghosts here.

When do you think approximately that release will be, so I can plan how much I'll continue doing in the old sceneform or with how much I'll just wait on.

Definitely thank you for your quick responses and all the effort you put into all this!

ThomasGorisse · 2022-02-14T22:17:58Z

ThomasGorisse
Feb 14, 2022
Maintainer

Fixed
db586eb - New CameraPermission and ARCore install/update system. Called automatically and handles creation success or possible fallback like 3D only usage:

0 replies

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Exception when opening sceneview fragment, after the activity is already running and has shown other things #7

morhenny Jan 28, 2022

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