Practicing android design metrics?

Reading the design guidelines. I came across a little issue while trying to practice the metrics:

As secified above, we should add a 4dp margin to the top and bottom of button elements and text input fields. But those elements already has a margin specified by the drawables, which makes the guidelines kind of invalid.

Even though padding and margin is specied as 0dp in the example below, we still get a margin:

Should i specify my own button drawables, or how do i solve this issue?