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Working for Android

Ray edited this page Sep 15, 2021 · 18 revisions

NOTE: This guide is intended for Android development on Windows platform, for alternative platforms, check:

Installing required tools

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

1. Open JDK

You can just download the JDK from here and decompress it in a directory, raylib Makefile.Android scripts looks for it on C:\open-jdk.

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;29.0.3
sdkmanager --install platform-tools
sdkmanager --install platforms;android-28
sdkmanager --install extras;google;usb_driver

With those commands you're installing all required tools. It includes: tools, build-tools, platform-tools, platforms\android-28 api level 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. raylib scripts expect to use NDK r21 and found it available on C:\android-ndk.

Compiling raylib source code

To compile raylib sources, just navigate from command line to directory raylib/src/ and execute Makefile with:

mingw32-make PLATFORM=PLATFORM_ANDROID

NOTE: libraylib.a will be generated in raylib/src directory by default.

WARNING: Maybe 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 a project template)

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

ANDROID_ARCH           ?= ARM
ANDROID_API_VERSION     = 28

JAVA_HOME              ?= C:/open-jdk
ANDROID_HOME           ?= C:/android-sdk
ANDROID_NDK            ?= C:/android-ndk
ANDROID_TOOLCHAIN      ?= $(ANDROID_NDK)/toolchains/llvm/prebuilt/windows-x86_64
ANDROID_BUILD_TOOLS    ?= $(ANDROID_HOME)/build-tools/29.0.3
ANDROID_PLATFORM_TOOLS  = $(ANDROID_HOME)/platform-tools

Then build the apk with:

mingw32-make PLATFORM=PLATFORM_ANDROID

WARNING: Make sure the MAKE tool to use is properly configured in the Makefile:

# Define default make program
MAKE = make

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        MAKE = mingw32-make
    endif
endif
ifeq ($(PLATFORM),PLATFORM_ANDROID)
    MAKE = mingw32-make
endif

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

%ANDROID_SDK_TOOLS%\adb install 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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