<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle" >
            <corners android:radius="4dip" />
            <solid android:color="#aa111111" />
            <stroke android:width="2dp" android:color="#0000"/>
        </shape>
    </item>
</layer-list>