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57 lines
1.9 KiB
57 lines
1.9 KiB
3 years ago
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# hello-sdl2-android
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## Synopsis
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This project is an update of the hello world project here https://github.com/stephen47/android-sdl2-gradle-template, as I couldn't find a good way to integrate a CMake built C++ project to an android application.
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It features a sample hello world using SDL and SDL_image.
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## Requirements
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- JDK and JRE 8
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- Android SDK and NDK (with Android Build-tools 28.0.3 and Android Platform API 28, though these are configurable)
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- ANDROID_HOME and ANDROID_NDK_HOME environment variables set (I did this in /etc/environment)
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## Compiling the sample program (command line)
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You can download the dependencies (SDL2 and SDL2_image), compile your program and then install it on a connected device with the following commands:
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```
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./get_dependencies
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cd android
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./gradlew assembleDebug
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./gradlew installDebug
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```
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## Compiling the sample program (Android Studio 3.2.1)
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First download the dependencies (SDL2 and SDL2_image) as above or manually like below. Then open the ./android folder as an existing project in Android Studio.
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## Downloading dependencies manually
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Download the latest source release from SDL and SDL_image websites:
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https://www.libsdl.org/download-2.0.php
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https://www.libsdl.org/projects/SDL_image/
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Unzip it, put the SDL2-x.x.x and SDL2_image-x.x.x folders in `external/SDL2` and rename them to SDL2 and SDL2_image so your project folder looks like this:
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```
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+ android
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+ external
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| + SDL2
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| | + Android.mk
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| | | SDL2
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| | | SDL2_image
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```
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There, it's done!
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## Thanks
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Most of the code here is inspired by these repositories:
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https://github.com/stephen47/android-sdl2-gradle-template (Android + gradle)
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https://github.com/suikki/simpleSDL/ (Android + CMake)
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The example libSDL2 program which draws the square on screen was found at https://stackoverflow.com/questions/21890627/drawing-a-rectangle-with-sdl2/21903973#21903973.
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The Google NDK example projects were very helpful: https://github.com/googlesamples/android-ndk
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