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3D object from Mobile Scene Package disappear in Android

Marco_Foi

I am building a MAUI app on .NET 8 using Esri.ArcGISRuntime.Maui 200.5.0

I created a Mobile Scene Package file in ArcGIS Pro and embedded it in the app as a Resource.

I created TWO version of the file: one WITH end one WITHOUT "Reference online content"

reference online content.png

If I use the one WITH BASEMAP get the expected result in Windows BUT NOT in Android (14):

WINDOWS:

ANDROID 14:

Sometimes, at start, the 3D model appeard but is somehow "wiped out" by the basemap drawing event

If I use the one WITHOUT I get the expected result both in Android (14) and Windows:

WINDOWS:

ANDROID:

All this tells me there is no issue with my data.. ..and it looks like a Runtime BUG.

Is it?

(I am attaching the two MobileScenePackage .mspk files)

opera_14_mergedlayersfull_w_basemap.mspk

opera_14_mergedlayersfull_no_basemap.mspk

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Maui

Android

Accepted answers

SomeGISGuy

The maui dependency will automatically include the dependencies that gives you access to this. Here's a bit of code I was able to write in a blank maui app that adds just the Esri.ArcGISRuntime.Maui package:

All comments

Marco_Foi

Can you please elaborate HOW to access that property in MAUI application?

I am currently setting this dependency in my project file:
<PackageReference Include="Esri.ArcGISRuntime.Maui" Version="200.6.0" />
Also I am defining the current namespace in my ContentPage XML
xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013"

All this has worked well so far.. ..but does not give me access to the property you quoted : `Esri.ArcGISRuntime.Controls.UI.SceneView`

nor the one you probably intended to quote 😉

`Esri.ArcGISRuntime.UI.Controls.SceneView`

Do I need to install other dependencies beside Esri.ArcGISRuntime.Maui?

SomeGISGuy

There property is in the namespace: `Esri.ArcGISRuntime.Controls.UI.SceneView`
Make sure you place the code inside an #if __ANDROID__ section since the specific property is only available on the Android target.

Marco_Foi

There is NO WAY to use

Esri.ArcGISRuntime.Android

in a Esri.ArcGISRuntime.MAUI application.

KoushikHajra

Here is the doc for the method to change the memory limit: https://developers.arcgis.com/net/api-reference/api/android/Android/Esri.ArcGISRuntime.UI.Controls.SceneView.MemoryLimit.html#Esri_ArcGISRuntime_UI_Controls_SceneView_MemoryLimit.

Marco_Foi

I feel tweaking with memory available to SceneView is possible just in SDK for JS.

I cannot find any reference to this feature in SDK for .NET : can you please check?

Despite this, the issue might be related to a memoy issue indeed!

KoushikHajra

Hello @Marco_Foi,

Thank you for reaching out to us and sorry for the problem you're having on Android. I think I might have an idea on what is going on here. Can you please try something really quickly and see if this solves the problem for you?

SceneView has a method to override the default memory limit. If you can increase it to 2 or 4GB based on the type of device you have and try to render the mspk, does the model render then? I suspect this because that's the reason why when you have the basemap it uses more memory and thus prevents the layer from rendering.

Please let us know what you find. I hope this helps.

Regards,

Koushik

Marco_Foi

You got the point!

Sometime, using the .mspk referencing online basemap, it happens that when the scene is rendering, for the first second, second-and-hal, the 3D object is shown.. ..then the "tide" of the basemap-rendering comes.. ..and the 3D object disappears all at once.

As for your other curiosity (adding Basemap by code) I also tried that way.

I created a Basemap object;
new Basemap(BasemapStyle.ArcGISTopographicBase)

and added to the Scene after 4 seconds of delay using an async Task and then repushing the change on MainThread.
The result is EXACTLY the same! 😞

UPDATE: the following sentences are wrong

I also tested with an ElevationSources injected by code after the Scene has rendered

scene.BaseSurface.ElevationSources.Add(new ArcGISTiledElevationSource(new Uri("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer")));

The result is EXACTLY the same! 😞..the 3D model disappears.

SomeGISGuy

aaah gotcha. I misunderstood that bit. So adding online basemap makes it so it doesn't render?
I'll have someone investigate. Thank you for sharing the data.

I'd be curious what happens if you manually add the basemap programmatically after loading the mspk.

Marco_Foi

What you say is right but has nothing to do with the exposed issue.. ..or, at least, it does not took having relations.
You are right in the terms that the app has to copy the emebedded file from resources to App private storage before accesing it..

..but once there, the file is perfectly reachable using the file path.

The proof this is true is the fact that in the 4th picture the 3D model from the local .mspk file is displayed in Android:

The file is accessed and displayed.. ..unless I ALSO enable the Base map!

SomeGISGuy

This is unfortunately an android quirk: The files you deploy with android aren't directly accessible with a file path, whereas on iOS and Windows you can just give it the relative path. On Android you'll need to copy the deployed data out into a local folder instead and use that path to open the data.

Also instead of using "Resource", use "Content" for the build action.

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