android button fine text alignment

Question

I'm trying to create standard button in android with a background and some text in front but some fairly specific alignment. I want the text to be centered vertically and on the left with 20dp of padding. The alignment works but the padding doesn't. I know I could probably get the desired effect by putting a few spaces in the text but that seems like a hack and next I want to do a similar thing but with the text at the top so I would prefer a more elegant solution. Here's what I have:

<Button
        android:layout_width="312dp"
        android:layout_height="95dp"
        android:id="@+id/gv_music_button"
        android:text="Music"
        android:textSize="30sp"
        android:paddingLeft="20dp"
        android:gravity="left|center_vertical"
    />

Solution

My mistake, padding was working correctly. Just didn't appear to be.