Compiling for Android

Ver también

This page describes how to compile Android export template binaries from source. If you're looking to export your project to Android instead, read Exportación para Android.

Nota

In most cases, using the built-in deployer and export templates is good enough. Compiling the Android APK manually is mostly useful for custom builds or custom packages for the deployer.

Also, you still need to follow the steps mentioned in the Exportación para Android tutorial before attempting to build a custom export template.

Requerimientos

For compiling under Windows, Linux or macOS, the following is required:

  • Python 3.5+.

  • SCons 3.0+ build system.

  • Android SDK (las herramientas de línea de comandos son suficiente).

    • Required SDK components will be automatically installed.

    • On Linux, do not use an Android SDK provided by your distribution's repositories as it will often be outdated.

  • Gradle (will be downloaded and installed automatically if missing).

  • JDK 11 (either OpenJDK or Oracle JDK).

Ver también

To get the Godot source code for compiling, see Consiguiendo el código fuente.

For a general overview of SCons usage for Godot, see Introduction to the buildsystem.

Setting up the buildsystem

  • Set the environment variable ANDROID_SDK_ROOT to point to the Android SDK. If you downloaded the Android command-line tools, this would be the folder where you extracted the contents of the ZIP archive.

  • Install the necessary SDK components in this folder:

    • Accept the SDK component licenses by running the following command where android_sdk_path is the path to the Android SDK, then answering all the prompts with y:

    tools/bin/sdkmanager --sdk_root=<android_sdk_path> --licenses

    • Complete setup by running the following command where android_sdk_path is the path to the Android SDK.

    tools/bin/sdkmanager --sdk_root=<android_sdk_path> "platform-tools" "build-tools;30.0.3" "platforms;android-29" "cmdline-tools;latest" "cmake;3.10.2.4988404"

Ver también

To set the environment variable on Windows, press Windows + R, type "control system", then click on Advanced system settings in the left pane, then click on Environment variables on the window that appears.

Ver también

To set the environment variable on Linux or macOS, use export ANDROID_SDK_ROOT=/path/to/android-sdk where /path/to/android-sdk points to the root of the SDK directories.

Building the export templates

Godot needs two export templates for Android: the optimized "release" template (android_release.apk) and the debug template (android_debug.apk). As Google will require all APKs to include ARMv8 (64-bit) libraries starting from August 2019, the commands below will build an APK containing both ARMv7 and ARMv8 libraries.

Compiling the standard export templates is done by calling SCons from the Godot root directory with the following arguments:

  • Release template (se utiliza al exportar con Debugging Enabled apagado)

scons platform=android target=release android_arch=armv7
scons platform=android target=release android_arch=arm64v8
cd platform/android/java
# On Windows
.\gradlew generateGodotTemplates
# On Linux and macOS
./gradlew generateGodotTemplates

The resulting APK will be located at bin/android_release.apk.

  • Debug template (se utiliza cuando se exporta con Debugging Enabled encendido)

scons platform=android target=release_debug android_arch=armv7
scons platform=android target=release_debug android_arch=arm64v8
cd platform/android/java
# On Windows
.\gradlew generateGodotTemplates
# On Linux and macOS
./gradlew generateGodotTemplates

The resulting APK will be located at bin/android_debug.apk.

Adding support for x86 devices

If you also want to include support for x86 and x86-64 devices, run the SCons command a third and fourth time with the android_arch=x86, and android_arch=x86_64 arguments before building the APK with Gradle. For example, for the release template:

scons platform=android target=release android_arch=armv7
scons platform=android target=release android_arch=arm64v8
scons platform=android target=release android_arch=x86
scons platform=android target=release android_arch=x86_64
cd platform/android/java
# On Windows
.\gradlew generateGodotTemplates
# On Linux and macOS
./gradlew generateGodotTemplates

This will create a fat binary that works on all platforms. The final APK size of exported projects will depend on the platforms you choose to support when exporting; in other words, unused platforms will be removed from the APK.

Limpiando las plantillas de exportación generada

You can use the following commands to remove the generated export templates:

cd platform/android/java
# On Windows
.\gradlew cleanGodotTemplates
# On Linux and macOS
./gradlew cleanGodotTemplates

Using the export templates

Godot needs release and debug APKs that were compiled against the same version/commit as the editor. If you are using official binaries for the editor, make sure to install the matching export templates, or build your own from the same version.

Al exportar tu juego, Godot abre el APK, cambia algunas cosas dentro y añade tus archivos.

Installing the templates

The newly-compiled templates (android_debug.apk and android_release.apk) must be copied to Godot's templates folder with their respective names. The templates folder can be located in:

  • Windows: %APPDATA%\Godot\templates\<version>\

  • Linux: $HOME/.local/share/godot/templates/<version>/

  • macOS: $HOME/Library/Application Support/Godot/templates/<version>/

<version> is of the form major.minor[.patch].status using values from version.py in your Godot source repository (e.g. 3.0.5.stable or 3.1.dev). You also need to write this same version string to a version.txt file located next to your export templates.

However, if you are writing your custom modules or custom C++ code, you might instead want to configure your APKs as custom export templates here:

../../_images/andtemplates.png

You don't even need to copy them, you can just reference the resulting file in the bin\ directory of your Godot source folder, so that the next time you build you will automatically have the custom templates referenced.

Solución De Problemas

Platform doesn't appear in SCons

Double-check that you've set the ANDROID_SDK_ROOT environment variable. This is required for the platform to appear in SCons' list of detected platforms. See Setting up the buildsystem for more information.

Application not installed

Android might complain the application is not correctly installed. If so:

  • Check that the debug keystore is properly generated.

  • Revisar que el ejecutable jarsigner es de JDK 8.

If it still fails, open a command line and run logcat:

adb logcat

Then check the output while the application is installed; the error message should be presented there. Seek assistance if you can't figure it out.

Application exits immediately

If the application runs but exits immediately, this might be due to one of the following reasons:

  • Make sure to use export templates that match your editor version; if you use a new Godot version, you have to update the templates too.

  • libgodot_android.so is not in libs/<android_arch>/ where <android_arch> is the device's architecture.

  • The device's architecture does not match the exported one(s). Make sure your templates were built for that device's architecture, and that the export settings included support for that architecture.

In any case, adb logcat should also show the cause of the error.