Android - xml layout as a background

Is it possible to make a xml background composed of multiple image / scale / alignement? And so to have a complex drawable xml usable as a background for android layout.

For example, this is the dynamic xml background that I would like to do:

And so, for all of my different activities, put my different layouts/views above:

I know I cannot set a layout as a layout_background, but here is the design of what I would like to do (according to previous pictures):

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background_image" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1" >

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/main_image" />
        </RelativeLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="2" >

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="50dp"
                android:layout_alignParentBottom="true"
                android:layout_centerHorizontal="true"
                android:src="@drawable/footer_image" />
        </RelativeLayout>
    </LinearLayout>

</RelativeLayout>

I saw