title: Android listView: NullPointerException
body: <p>I need a small help in List view. I am generating a list View, but whenever i do <code>getChildAt(int position</code>) it throws NullPointerException. </p>
  
  <p>Here is the code</p>
  
  <pre><code>_list=(ListView)findViewById(android.R.id.list);
  
  _loadListElements();
  
  _showListUI();
  
  _list.getChildAt(1).setBackgroundColor(Color.WHITE);
  </code></pre>