title: Can't seem to display both a ListView and an AdView at the same time
body: <p>I have an Activity in my app that simply displays some results from a search.  This data is displayed using a ListView.  This works well.  I recently tried adding an Adview underneath it, but it simply doesn't display.  What's more, it pushes my List View up to the top of the screen so that it can only occupy the top 20% or so of the screen - with only blank underneath.</p>
  
  <p>Here is the display XML:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:myapp="http://schemas.android.com/apk/res/uk.co.redfruit.android.whogotwhat"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:paddingTop="10dp"
      android:paddingBottom="10dp"
      &gt;
      &lt;ListView
          android:layout_width="fill_parent"
          android:layout_height="fill_parent" 
          android:id="@+id/scanResults"
          android:paddingLeft="5dp" 
          android:paddingRight="5dp" 
          /&gt;
      &lt;com.admob.android.ads.AdView 
          android:id="@+id/ad"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          myapp:backgroundColor="#000000"
          myapp:primaryTextColor="#FFFFFF"
          myapp:secondaryTextColor="#CCCCCC" 
          /&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>What am I missing here?</p>