Android build failed

Development Platform & Builds
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1

Hey,

Running into an issue when packaging for android. Followed the steps from here How to Set Up Android SDK and NDK For Your Unreal Engine Development Environment | Unreal Engine 5.3 Documentation | Epic Developer Community

but getting this error.

UATHelper: Packaging (Android (ASTC)): > Could not resolve all files for configuration ‘:classpath’.
UATHelper: Packaging (Android (ASTC)): > Could not resolve com.android.tools.build:gradle:7.4.2.
UATHelper: Packaging (Android (ASTC)): Required by:
UATHelper: Packaging (Android (ASTC)): project :
UATHelper: Packaging (Android (ASTC)): > No matching variant of com.android.tools.build:gradle:7.4.2 was found. The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute ‘org.gradle.plugin.api-version’ with value ‘7.5’ but:
UATHelper: Packaging (Android (ASTC)): - Variant ‘apiElements’ capability com.android.tools.build:gradle:7.4.2 declares a library, packaged as a jar, and its dependencies declared externally:
UATHelper: Packaging (Android (ASTC)): - Incompatible because this component declares an API of a component compatible with Java 11 and the consumer needed a runtime of a component compatible with Java 8
UATHelper: Packaging (Android (ASTC)): - Other compatible attribute:
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about org.gradle.plugin.api-version (required ‘7.5’)
UATHelper: Packaging (Android (ASTC)): - Variant ‘javadocElements’ capability com.android.tools.build:gradle:7.4.2 declares a runtime of a component, and its dependencies declared externally:
UATHelper: Packaging (Android (ASTC)): - Incompatible because this component declares documentation and the consumer needed a library
UATHelper: Packaging (Android (ASTC)): - Other compatible attributes:
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about its target Java version (required compatibility with Java 8)
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about its elements (required them packaged as a jar)
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about org.gradle.plugin.api-version (required ‘7.5’)
UATHelper: Packaging (Android (ASTC)): - Variant ‘runtimeElements’ capability com.android.tools.build:gradle:7.4.2 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
UATHelper: Packaging (Android (ASTC)): - Incompatible because this component declares a component compatible with Java 11 and the consumer needed a component compatible with Java 8
UATHelper: Packaging (Android (ASTC)): - Other compatible attribute:
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about org.gradle.plugin.api-version (required ‘7.5’)
UATHelper: Packaging (Android (ASTC)): - Variant ‘sourcesElements’ capability com.android.tools.build:gradle:7.4.2 declares a runtime of a component, and its dependencies declared externally:
UATHelper: Packaging (Android (ASTC)): - Incompatible because this component declares documentation and the consumer needed a library
UATHelper: Packaging (Android (ASTC)): - Other compatible attributes:
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about its target Java version (required compatibility with Java 8)
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about its elements (required them packaged as a jar)
UATHelper: Packaging (Android (ASTC)): - Doesn’t say anything about org.gradle.plugin.api-version (required ‘7.5’)

2

i also encounted this error when i tried to package apk last week, the only time i successfully packaged apk is that i built unrealeditor.exe from source code , and than i packaged 3 offical samples (StackOBot, lyra, Cropout) for android successfully.

now i try donwload UE5.5 source code and build apk again…

3

Based on the error log you’re showing there it looks like you’re running the wrong version of Java.(See line 5 and continue several lines down to see the compatibility responses) Also, make sure your SDK is properly installed/configured.

4

I built UE5.5 from source code (branch dev-5.5), it seems EPIC have cleanup the whole source code, before i built UE5.4.4 (branch release), it took me more than 2 hours , now less than 2 hours, they split all components about Android from x64 build, android components will only be build when they are needed.
i can’t package apk successfully by the engine (5.4.4) downloaded by Games Launcher, but i can package apk smoothly after i built engine5.5 from source code, all the stuffs releated to android is the same (android SDK ,NDK , JAVA version , gradle ) as before , i didn’t touch them. the errors above gone…
the cons that build from source code is it take up my 300G disk space…