title: Hardware Accelerating in ListView
body: <p>Is there a way to force hardware accelerating in a ListView.
  I have a ListView with more than 400 items with an icon an scrolling is very slow. Each Item has the same icon. I also added a ViewHolder. 
  In manifest file i enabled Hardware Accelerating.
  An when i run this code:</p>
  
  <pre><code>ListView list_new = (ListView) findViewById(R.id.listview01);
  list_new.isHardwareAccelerated();
  </code></pre>
  
  <p>It returns false.
  My phone is a Nexus S with Jelly Bean.
  How can i force Hardware Accelerating?</p>
  
  <p><strong>EDIT:</strong>
  Here is my ListView:</p>
  
  <pre><code>&lt;ListView
      android:id="@android:id/list"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:persistentDrawingCache="scrolling"
      android:hardwareAccelerated="true"
      android:fastScrollEnabled="true" 
      android:scrollingCache="true" 
      android:smoothScrollbar="true" &gt;
  &lt;/ListView&gt;
  </code></pre>