LogPlayLevel: Error: Z:\app\src\main\java\com\epicgames\ue4\GameActivity.java:3521: error: cannot find symbol

Development Platform & Builds
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1

Hello,

I would like to compile an old VR project made with Unreal 4.27.

I compiled my project for Windows to use it on the Oculus Rift and it works very well.

I wanted to compile it for Android in order to use it on the Oculus Quest 3 but I couldn’t do it. I followed a number of tutorials explaining how to compile and was able to remove the errors gradually.

Unfortunately, I’m stuck on a problem that seems never to have been discussed on this forum.

The problem that appears is the one indicated in the title “.java:3521: error: cannot find symbol”

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I’ve seen that problems of this type are due to a too recent version of the NDK and I’ve removed everything in Android Studio except version 21.

Below are the differents configurations:

In “Platform/Android :”
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In “Platform/Android SDK :”

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I’ve tried versions more recent than 21 but I always get an error message telling me to use version 21.

The last surprising point and the first error indicating that it could not compile on IOs but “File/Package project/Support Platform” I’ve that :
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Thanks a lot !

2

Did you fix your issue yet? If not I’ll recommend updating to a newer version like 5.5.

3

This is good info. The updated UE provided a number of bug fixes.

4

Did anything else happen with this? I’ve got a game that was started in a previous version of unreal, And I always update to the latest unreal. Now on 5.5.3 and constantly getting these errors?

Summary

LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:937: error: cannot find symbol
LogPlayLevel: UAT: activityContext.runOnUiThread(new Runnable()
LogPlayLevel: UAT: ^
LogPlayLevel: UAT: symbol: method runOnUiThread()
LogPlayLevel: UAT: location: variable activityContext of type ContextWrapper
LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:962: error: cannot find symbol
LogPlayLevel: UAT: activityContext.runOnUiThread(new Runnable()
LogPlayLevel: UAT: ^
LogPlayLevel: UAT: symbol: method runOnUiThread()
LogPlayLevel: UAT: location: variable activityContext of type ContextWrapper
LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:1028: error: cannot find symbol
LogPlayLevel: UAT: activityContext.runOnUiThread(new Runnable()
LogPlayLevel: UAT: ^
LogPlayLevel: UAT: symbol: method runOnUiThread()
LogPlayLevel: UAT: location: variable activityContext of type ContextWrapper
LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:1049: error: cannot find symbol
LogPlayLevel: UAT: activityContext.runOnUiThread(new Runnable()
LogPlayLevel: UAT: ^
LogPlayLevel: UAT: symbol: method runOnUiThread()
LogPlayLevel: UAT: location: variable activityContext of type ContextWrapper
LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:1069: error: cannot find symbol
LogPlayLevel: UAT: activityContext.runOnUiThread(new Runnable()
LogPlayLevel: UAT: ^
LogPlayLevel: UAT: symbol: method runOnUiThread()
LogPlayLevel: UAT: location: variable activityContext of type ContextWrapper
LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:1111: error: cannot find symbol
LogPlayLevel: UAT: activityContext.runOnUiThread(new Runnable()
LogPlayLevel: UAT: ^
LogPlayLevel: UAT: symbol: method runOnUiThread()