Android: Layer-List not working?

I am trying to put two oval drawables on top of each other, the first has transparency. However with the way I have it, it displays the first oval's color at the size of the second oval.

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
    <shape android:shape="oval">
        <size android:width="15dp" android:height="15dp" />
        <solid android:color="#35000000"/>
    </shape>
</item>
<item>
    <shape android:shape="oval">
        <size android:width="5dp" android:height="5dp" />
        <solid android:color="#000000"/>
    </shape>
</item>
</layer-list>

How can I get this to work as intended?

EDIT: Here is the parent:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/my_layerlist" />
</LinearLayout>