Look this xml will put your Layout
at the bottom of any View
you will use in RelativeLayout
<RelativeLayout
android:id="@+id/footer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#FC0"
android:gravity="center" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="Fixed Footer"
android:textColor="#000"
android:textSize="20sp" />
</RelativeLayout>