Linear layout below. This layout is aligned parent bottom in a Relative Layout. Problem is I want all buttons to have the same height. I have tried layout_gravity="fill" but that doesn't seem to work.

<LinearLayout android:id="@+id/button_layout" 
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:background="#FFFFFF"
        android:layout_alignParentBottom="true">
    <Button android:text="Send" android:id="@+id/send_button"
        android:layout_weight="1" android:layout_gravity="fill"
        android:layout_width="0dip" android:layout_height="wrap_content">
    </Button>
    <Button android:text="Report Missing Image" android:id="@+id/report_button"
        android:layout_weight="1"
        android:layout_width="0dip" android:layout_height="wrap_content">
    </Button>
    <Button android:text="Close" android:id="@+id/close_button"
        android:layout_weight="1" android:layout_gravity="fill"
        android:layout_width="0dip" android:layout_height="wrap_content">
    </Button>
</LinearLayout>