How to use a shape drawable together with an image?

You could use LayerDrawable, which could contain as many layers(shapes or images) as you need. You can create it either as resource or programmatically.

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/rounded_corners" android:id="@+id/rounded_corners"/>
    <item android:drawable="@drawable/additional_image" android:id="@+id/additional_image" />
</layer-list>