Update: Engineers at Google fixed the issue. Thank you.
After initial setup of SDL2 application for Android, I decided to add one activity before launching SDL. So I created the new MainActivity which should launch SDLActivity after a tap on the button.
This time Gradle Experimental Plugin gave me a very fancy error: Cannot invoke method dependencies() on null object.
As always the error message does not provide too many hints how to solve the issue.
Android Studio automatically just appended a dependency into the Gradle file during creation of new MainActivity. So the code in build.gradle looked like this:
Little bit weird code for dependencies. The solution was just to add a new line.
The whole project is available at github.com/georgik/sdl2-android-example project.
More articles about SDL2 for Android are available under tag sdl2.