I have successfully converted multiple Kivy applications into APKs using GitHub Actions. However, I recently encountered an issue when trying to convert a new Kivy app. Despite using the same setup and configuration, the build process failed with an error related to Java version compatibility.

buildozer.spec

requirements = python3==3.9.12, hostpython3==3.9.12, kivy==2.2.1, kivymd==1.1.1, pillow

osx.python_version = 3

osx.kivy_version = 2.2.1

(int) Target Android API, should be as high as possible.

android.api = 31

(bool) If True, then automatically accept SDK license

android.accept_sdk_license = True

(list) Gradle dependencies to add

#android.gradle_dependencies =

#android.enable_androidx = True

#android.add_gradle_repositories =

#android.add_packaging_options =

android.archs = arm64-v8a, armeabi-v7a

(bool) enables Android auto backup feature (Android API >=23)

android.allow_backup = True

(str) Bootstrap to use for android builds

Python for android (p4a) specific

#p4a.url =

#p4a.fork = kivy

p4a.branch = master

#p4a.commit = HEAD

#p4a.source_dir =

#p4a.local_recipes =

#p4a.hook =

p4a.bootstrap = sdl2

#p4a.port =

#p4a.setup_py = false

#p4a.extra_args =

[buildozer]

(int) Log level (0 = error only, 1 = info, 2 = debug (with command output))

log_level = 2

(int) Display warning if buildozer is run as root (0 = False, 1 = True)

warn_on_root = 1

Error log

2024-03-22T22:51:38.0864944Z Welcome to Gradle 8.0.2!2024-03-22T22:51:38.0865239Z2024-03-22T22:51:38.0865440Z Here are the highlights of this release:2024-03-22T22:51:38.0866065Z - Improvements to the Kotlin DSL2024-03-22T22:51:38.0866899Z - Fine-grained parallelism from the first build with configuration cache2024-03-22T22:51:38.0867798Z - Configurable Gradle user home cache cleanup2024-03-22T22:51:38.0868210Z2024-03-22T22:51:38.0869253Z2024-03-22T22:51:38.0869573Z Starting a Gradle Daemon (subsequent builds will be faster)2024-03-22T22:51:38.0870091Z2024-03-22T22:51:38.0870292Z FAILURE: Build failed with an exception.2024-03-22T22:51:38.0870690Z2024-03-22T22:51:38.0870828Z * Where:2024-03-22T22:51:38.0872038Z Build file '/github/workspace/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/dists/UniversalConvert/build.gradle' line: 202024-03-22T22:51:38.0873120Z2024-03-22T22:51:38.0873281Z * What went wrong:2024-03-22T22:51:38.0873962Z A problem occurred evaluating root project 'UniversalConvert'.2024-03-22T22:51:38.0874932Z > Failed to apply plugin 'com.android.internal.application'.2024-03-22T22:51:38.0875961Z > Android Gradle plugin requires Java 17 to run. You are currently using Java 13.2024-03-22T22:51:38.0877117Z Your current JDK is located in /usr/lib/jvm/java-13-openjdk-amd642024-03-22T22:51:38.0877930Z You can try some of the following options:2024-03-22T22:51:38.0878590Z - changing the IDE settings.2024-03-22T22:51:38.0879259Z - changing the JAVA_HOME environment variable.2024-03-22T22:51:38.0880268Z - changing org.gradle.java.home in gradle.properties.2024-03-22T22:51:38.0880813Z2024-03-22T22:51:38.0880952Z * Try:2024-03-22T22:51:38.0881493Z > Run with --stacktrace option to get the stack trace.2024-03-22T22:51:38.0882517Z > Run with --info or --debug option to get more log output.2024-03-22T22:51:38.0883319Z > Run with --scan to get full insights.2024-03-22T22:51:38.0883730Z2024-03-22T22:51:38.0884388Z2024-03-22T22:51:38.0884870Z Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.2024-03-22T22:51:38.0885536Z2024-03-22T22:51:38.0886401Z You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.2024-03-22T22:51:38.0887492Z2024-03-22T22:51:38.0888124Z See https://docs.gradle.org/8.0.2/userguide/command_line_interface.html#sec:command_line_warnings2024-03-22T22:51:38.0888992Z2024-03-22T22:51:38.0889159Z BUILD FAILED in 29s2024-03-22T22:51:38.0889427Z2024-03-22T22:51:38.0889433Z2024-03-22T22:51:38.0889565Z STDERR:2024-03-22T22:51:38.0889781Z2024-03-22T22:51:38.0890098Z [1m[INFO][0m: STDOUT (last 20 lines of 45):2024-03-22T22:51:38.0891067Z [33m Your current JDK is located in /usr/lib/jvm/java-13-openjdk-amd642024-03-22T22:51:38.0892015Z You can try some of the following options:2024-03-22T22:51:38.0892725Z - changing the IDE settings.
2024-03-22T22:51:38.0893818Z - changing the JAVA_HOME environment variable.
2024-03-22T22:51:38.0894682Z - changing org.gradle.java.home in gradle.properties.2024-03-22T22:51:38.0895350Z
2024-03-22T22:51:38.0895660Z * Try:
2024-03-22T22:51:38.0896203Z > Run with --stacktrace option to get the stack trace.
2024-03-22T22:51:38.0897090Z > Run with --info or --debug option to get more log output.
2024-03-22T22:51:38.0897865Z > Run with --scan to get full insights.
2024-03-22T22:51:38.0898378Z
2024-03-22T22:51:38.0898788Z * Get more help at https://help.gradle.org
2024-03-22T22:51:38.0899495Z
2024-03-22T22:51:38.0900233Z Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.
2024-03-22T22:51:38.0901152Z
2024-03-22T22:51:38.0902378Z You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.
2024-03-22T22:51:38.0903582Z
2024-03-22T22:51:38.0904359Z See https://docs.gradle.org/8.0.2/userguide/command_line_interface.html#sec:command_line_warnings
2024-03-22T22:51:38.0905307Z
2024-03-22T22:51:38.0905692Z BUILD FAILED in 29s[39m