To build:

1. cd to AntTweakBar\build\Win32 folder

2. First time only, initialize the project (do not miss the dot at the end of the command):
    android update project -p .

3. ndk-build

4. Build the APK
    ant debug

5. Install the APK
	adb install -r ./bin/EngineSampleNativeActivity-debug.apk

6. Run the app on the device