Vive Focus 3 OpenXR app terminates on startup

[artijn]

Hello all, 

I'm encountering problems with running the Unreal VR template as stand alone app on my Vive Focus 3.
Whenever I try to open a packaged .apk on the device, the app terminates and brings me back to the library, without any further notification. 

I followed all instructions provided in the documentation. https://developer.vive.com/resources/openxr/openxr-mobile/documentation/
The issue occurs both for Unreal 5.0 and 5.1 with the OpenXR plugin enabled. 

I can still successfully build android apps in Unreal 5.0 using the WaveSDK plugin. 

Is this occurring to more people?

[artijn]

I still haven't been able to resolve the above issue. 

Initially I was able to successfully launch the APK on the device using Unreal 5.1. Then I made changes to the android configuration on my pc, a.o. running the SetupAndroid.bat for Unreal 5.0 and 5.2 preview. This included referring to version 8.0 for the   Command-Line Tools, as per item 3 of documentation https://docs.unrealengine.com/5.1/en-US/how-to-set-up-android-sdk-and-ndk-for-your-unreal-engine-development-environment/ . 

The issue now only occurs for Unreal 5.1, UE 5.0 works fine. The issue also occurs when using a different PC. A factory reset of the VR device didn't resolve. 

[artijn]

It's working again. One of the following might have resolved it:

• Refesh  libopenxr_loader.so (Documentation Ch. 3.2 step 1). I might have overrun it when I performed the Verify option on the Unreal installation.
• Update Java to 1.8.0_351 (link in documentation Ch 4.1.3 refered to 1.8.0_202, if that matters)

Edited May 10, 2023 by artijn