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Working for Android

Ray edited this page Jul 9, 2018 · 25 revisions

NOTE: For alternative instructions, check Working for Android (on macOS).

Installing Android required tools

Android requires a set of tools to do all the build process to generate a .APK game.

1. Java 8 JDK (including JRE)

You can just download the JDK from here and install it or alternatively, you can create a portable install just decompressing required files.

2. Android SDK

Actually, Android SDK is composed by a series of tools, you can install everything in a go just downloading Android Studio and installing the full package.

Alternatively, you can just install the required files manually. To do that, start downloading Command line tools package, found at the end of this page.

  • Decompress downloaded sdk-tools-... file into a folder named android-sdk. One of the included tools is the sdkmanager, a command line utility to install required packages.
  • From command line, navigate to android-sdk/tools/bin and execute the following commands:
sdkmanager --update
sdkmanager --list
sdkmanager --install build-tools;28.0.1
sdkmanager --install platform-tools
sdkmanager --install platforms;android-21
sdkmanager --install extras;google;usb_driver

With those commands you're installing all required tools. It includes: tools, build-tools, platform-tools, platforms\android-21 api and also extras\google\usb_driver (that you need to install to connect to your device).

3. Android NDK

To develop with raylib in C, we need to install the Android Native Development Kit. You can download it from here. Android NDK includes support files for multiple Android APIs and multiple architectures; it is recommended to generate and standalone toolchain with just the required compiler and API you need.

Fortunately, Android NDK comes with a Python script that generates it for you, just execute the following command line:

python %ANDROID_NDK%\build\tools\make_standalone_toolchain.py --arch arm --api 21 --install-dir=C:\android_toolchain_ARM_API21

Compiling raylib source code

To compile raylib sources, it's recommended to use Android NDK standalone toolchain.

Once the toolchain is avaliable, just navigate from command line to folder raylib/src/ and execute Makefile with:

mingw32-make PLATFORM=PLATFORM_ANDROID

Remember to setup ANDROID_TOOLCHAIN path property in the Makefile!

ANDROID_TOOLCHAIN = C:/android_toolchain_ARM_API21

NOTE: libraylib.a will be generated in folder raylib/release/android/armeabi-v7a/ or raylib/release/android/arm64-v8a/, depending on the selected architecture (32bit or 64bit).

NOTE: Probably your Android device uses a 64bit CPU but be careful, installed Android OS could still be 32bit, not allowing 64bit apps.

Compiling a raylib game for Android (using an example project template)

Step 1. To build an APK, navigate to folder raylib/template/simple_game/ and edit Makefile.Android. Replace these settings with yours where apropriate:

ANDROID_ARCH ?= ARM
ANDROID_API_VERSION = 21

JAVA_HOME ?= C:/JavaJDK
ANDROID_HOME = C:/android-sdk
ANDROID_TOOLCHAIN = C:/android_toolchain_$(ANDROID_ARCH)_API$(ANDROID_API_VERSION)
ANDROID_BUILD_TOOLS = $(ANDROID_HOME)/build-tools/28.0.1
ANDROID_PLATFORM_TOOLS = $(ANDROID_HOME)/platform-tools

Then build the apk with:

mingw32-make PLATFORM=PLATFORM_ANDROID

Step 2: To install the APK into connected device (previously intalled drivers and activated USB debug mode on device):

%ANDROID_SDK_TOOLS%\adb install -r simple_game.apk

Step 4: To view log output from device:

%ANDROID_SDK_TOOLS%\adb logcat -c
%ANDROID_SDK_TOOLS%\adb -d  logcat raylib:V *:S

If you have any doubt, just let me know.

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