Use relative layout to have views about or below a listview.
You can tell views to align to top, bottom, left, or right and then have a margin to make room for the other view.
For example, if you want an image below your listview, you would align your listview to parent top and assign a bottom margin to the listview. Then align the imageview to parent bottom and the margin from the listview will make room for it.
Hope this makes sense.
EDIT:
Here is some code: I just wrote this of the top of my head so verify the tag properties but should give you the idea.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent"
android:layout_width="fill_parent" >
<ListView
android:id="@+id/list"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_marginBottom="50dp"
android:layout_alignParentTop="true" />
<TextView
android:text="Some text"
android:gravity="center"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_alignParentBottom="true" />
</RelativeLayout>