Android: Square buttons like AVG

Question

I have been doing a lot of research about, how I can make my app look half decent in terms of the buttons, and I have decided that I will be using square buttons that are transparent apart from the border.

Does anyone know of any tutorials for something similar. I have searched the web but I cannot really find what I am after.

This is basically what I am trying to achieve.
_{(source: itproportal.com)}

Answer 1

For the borders, I'd use a 9 patch.
For the buttons, you seem to be using ToggleButtons.
You can customize their aspect: see this.