How to put a button in between a sticky 'header' and a Listview in Android

My goal is to have a sticky header, a clear button, and then a ListView (in that order).

+-----------------+  
|      Header     |    (Sticky)
+-----------------+
| "Clear" button  |    (NOT sticky)
+-----------------+
|    ListView     |    (Also NOT sticky)
|                 |
|                 |
|                 |
|                 |
|                 |
|                 |
+-----------------+

This following approach almost does what I want. The header is sticky, and the ListView functions correctly. But the button is sticky (it tags along right below the sticky header).

<RelativeLayout>

    <!-- Used for Sticky Header -->
    <RelativeLayout
    android:id="@+id/top_control_bar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="?attr/actionBarSize">

        <Button/>

        <TextView/>
    </RelativeLayout>   <!-- End XML for sticky hader -->

    <!--  Button to clear bookmarks  -->
    <Button
        android:id="@+id/clearButton"
        android:text="CLEAR"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:layout_below="@+id/top_control_bar"
        android:onClick="clearBookmarks"/> 

    <!--  ListView for displaying questions  -->
    <ListView
        android:id="@+id/listViewBrowse"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/clearButton" >
    </ListView>

</RelativeLayout>

I think I need to stop using this property

    android:layout_below="@+id/top_control_bar"

for the "clear" button. But it doesn't work if I just get rid of it (the button overlays the header if I do that). What should I adjust? Or what should I try instead of this approach?