Building Krita for Android

First of all, I use linux to do my builds and testing. Although, they should work on Windows/macOS, I cannot give any guarantee that it will.

Setting up Android SDK and NDK

We right now use Android NDK version r18b to do our builds. So, I would recommend to use that. Download it from google's website then extract it.

Next, Android SDK. You can either download Android Studio or just the sdk-tools. Both could be downloaded from google's website.

If you downloaded Android Studio then open SDK manager and download Android SDK Build-Tools. (more info: https://developer.android.com/studio/intro/update#sdk-manager)

If you download just sdk-tools, then, extract it and run:

cd <extracted-android-sdk-tools>/tools/bin
./sdkmanager --licenses
./sdkmanager platform-tools
./sdkmanager "platforms;android-21"
./sdkmanager "platforms;android-28"    # for androiddeployqt
./sdkmanager "build-tools;28.0.2"

If you get some ClassNotFoundException it might be because java version is set to 11. For sdkmanager to work, set it to 8 and then run it again.

That's the only dependency we have to manage manually!

Building Krita

Now, to build krita, run <krita-source>/packaging/android/androidbuild.sh --help and pass the required arguments.

Example:

./androidbuild.sh -p=all --src=/home/sh_zam/workspace/krita --build-type=Debug --build-root=/home/sh_zam/workspace/build-krita-android --ndk-path=/home/sh_zam/Android/Sdk/ndk-bundle --sdk-path=/home/sh_zam/Android/Sdk --api-level=21 --android-abi=armeabi-v7a

That's all!

Installing Krita APK

To install run adb install -d -r <build-root>/krita_build_apk/build/outputs/apk/debug/krita_build_apk-debug.apk.

adb should be in <sdk-root>/platform-tools/

Crash

If Krita crashes you can look up the logs using adb logcat