Create 9patch with fully round sides

Question

I'm trying to create a drawable that looks like the KitKat toast bacground:

but I have no idea how to recreate the fully round sides, I always end up with a rectangle with rounded edges like this:

or the sides aren't really round:

Any idea on how to accomplish this?

Btw, just setting the color of the Toast doesn't work.

Answer 1

Do it like this:

This is the toast_frame_holo.9.png from Android-19 (HDPI)