How do you leave a TableLayout in a fixed size on the screen?

I have a screen where you have a title, a table, and two buttons at the bottom of the table. I put the table inside a scrollView. However, when the table is filled with rows, it will occupy the place of the buttons until it disappears. Does anybody know how to solve this? Thanks in advance. Here is an example of my structure:

<?xml version="1.0" encoding="utf-8"?>

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <TableLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:stretchColumns="*" >
        </TableLayout>
    </ScrollView>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1" />

        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1" />
    </LinearLayout>
</LinearLayout>