Android Programming: The Big Nerd Ranch Guide, 4th Edition

Shape Drawables

Now, make your buttons round with a shape drawable.

Since XML drawables are not density specific, they are placed in the default drawable folder instead of a density-specific one. In the project tool window, create a new file in res/drawable called button_beat_box_normal.xml (Listing 22.2). (Why is this one “normal”? Because soon it will have a not-so-normal friend.)

Listing 22.2  Making a round shape drawable (res/drawable/button_beat_box_normal.xml)

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="oval">

    <solid android:color="@color/dark_blue"/>

</shape>

This file creates an oval shape drawable that is filled in with a dark blue color. There are additional customization ...