4.17 Exporting Daydream project with Gradle results in errors

aussieburger · August 10, 2017, 12:42pm

I’m trying to upgrade my project to epics 4.17 build (from 4.15) and tried to use the new gradle support for Java compiling (checkbox in project settings → Android).

Unfortunately when doing a daydream export I get the following error in the log:

UATHelper: Packaging (Android (ETC2)): :app:generateReleaseSources UATHelper: Packaging (Android (ETC2)): :app:incrementalReleaseJavaCompilationSafeguard UATHelper: Packaging (Android (ETC2)): :app:compileReleaseJavaWithJavac UATHelper: Packaging (Android (ETC2)): :app:compileReleaseJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.). UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:133: error: package com.google.vr.ndk.base does not exist UATHelper: Packaging (Android (ETC2)): import com.google.vr.ndk.base.GvrLayout; UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:134: error: package com.google.vr.ndk.base does not exist UATHelper: Packaging (Android (ETC2)): import com.google.vr.ndk.base.AndroidCompat; UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:135: error: package com.google.vr.ndk.base does not exist UATHelper: Packaging (Android (ETC2)): import com.google.vr.ndk.base.DaydreamApi; UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:635: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): private GvrLayout gvrLayout; UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: class GvrLayout UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:723: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): public DaydreamApi daydreamApi; UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: class DaydreamApi UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:724: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): public DaydreamApi getDaydreamApi() UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: class DaydreamApi UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:686: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): AndroidCompat.setSustainedPerformanceMode(_activity, true); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable AndroidCompat UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:699: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): AndroidCompat.setSustainedPerformanceMode(_activity, false); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable AndroidCompat UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1411: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): gvrLayout = new GvrLayout(this); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: class GvrLayout UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1445: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): AndroidCompat.setVrModeEnabled(this, true); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable AndroidCompat UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1456: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): AndroidCompat.setSustainedPerformanceMode(this, true); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable AndroidCompat UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1473: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): daydreamApi = DaydreamApi.create(this); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable DaydreamApi UATHelper: Packaging (Android (ETC2)): location: class GameActivity UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1482: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): DaydreamApi api = GameActivity.this.getDaydreamApi(); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: class DaydreamApi UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1645: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): AndroidCompat.setSustainedPerformanceMode(_activity, false); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable AndroidCompat UATHelper: Packaging (Android (ETC2)): Y:\app\src\main\java\com\epicgames\ue4\GameActivity.java:1658: error: cannot find symbol UATHelper: Packaging (Android (ETC2)): AndroidCompat.setSustainedPerformanceMode(_activity, true); UATHelper: Packaging (Android (ETC2)): ^ UATHelper: Packaging (Android (ETC2)): symbol: variable AndroidCompat UATHelper: Packaging (Android (ETC2)): Note: Some input files use or override a deprecated API. UATHelper: Packaging (Android (ETC2)): Note: Recompile with -Xlint:deprecation for details. UATHelper: Packaging (Android (ETC2)): 15 errors UATHelper: Packaging (Android (ETC2)): :app:compileReleaseJavaWithJavac FAILED UATHelper: Packaging (Android (ETC2)): FAILURE: Build failed with an exception. UATHelper: Packaging (Android (ETC2)): * What went wrong: UATHelper: Packaging (Android (ETC2)): Execution failed for task ':app:compileReleaseJavaWithJavac'. UATHelper: Packaging (Android (ETC2)): > Compilation failed; see the compiler error output for details. UATHelper: Packaging (Android (ETC2)): * Try: UATHelper: Packaging (Android (ETC2)): Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. UATHelper: Packaging (Android (ETC2)): BUILD FAILED

Note: exports fine with Ant.

Chris_Babcock · August 10, 2017, 5:52pm

Add this file: Engine/Source/ThirdParty/GoogleVR/lib/common_library/additions.gradle

dependencies {
        compile fileTree(dir: 'libs', include: ['*.jar'])
}

This will let Gradle know about the jar files in the libs directory. I have added this for the 4.17.2 update; didn’t make it in time for 4.17.1.