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[!NOTE]\n\u003e Android \u003e= 9 (API level 28) is needed on a device to install the generated .apk.\n\n## Update Native Libraries\n\nThe `update_native_libs.sh` script clones F3D, cross-compiles it for Android inside Docker containers, and copies the resulting `.so` and `.jar` files into the project.\nA `jniLibs-lock.json` file describes where the native libraries are built from.\nUnless a specific F3D version is needed, this step can be skipped.\n\n```bash\n# Build for all architectures (arm64-v8a, armeabi-v7a, x86_64, x86) using `jniLibs-lock.json` file\n./update_native_libs.sh\n\n# Build a specific release and save a new `jniLibs-lock.json` file\n./update_native_libs.sh --ref v3.4.1\n\n# Build only specific architectures using `jniLibs-lock.json` file\n./update_native_libs.sh --arch arm64-v8a --arch x86_64\n\n# Use a custom fork or branch and save a new `jniLibs-lock.json` file\n./update_native_libs.sh --repo Meakk/f3d --ref my-feature\n\n# Use an existing local clone (skip `jniLibs-lock.json` file logic, only for development purpose)\n./update_native_libs.sh --clone-dir ~/dev/f3d-src\n```\n\nRun `./update_native_libs.sh --help` for the full list of options.\n\n## Set Java 17 environment\n\nIt's recommended to use Java 17 because the build can break with untested recent Java versions.\nIf several Java versions are installed, one can set the following variable:\n\n```bash\nexport JAVA_HOME=/usr/lib/jvm/java-17-openjdk\n```\n\n## Build the APK\n\nUse the Gradle wrapper to build:\n\n```bash\n# Debug build\n./gradlew assembleDebug\n\n# Release build\n./gradlew assembleRelease\n```\n\n\u003e [!NOTE]\n\u003e In order to build the release package, the signing file should be copied to `f3d/f3d-android-key.jks` and the environment variable `ANDROID_KEYSTORE_PASSWORD` should contain the correct password.\n\nThe resulting APK files are located in `f3d/build/outputs/apk/`.\n\n## Testing the APK\n\nUse the Gradle wrapper to run the tests:\n\n```bash\n./gradlew connectedAndroidTest --info\n```\n\n\u003e [!WARNING]\n\u003e Some tests does image comparison and requires a specific device resolution. 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