title: First Visible Position in a ListView doesn´t work without scroll
body: <p>I want to set the first visible item in a listView in, for example, 15. I try this and it works perfectly:</p>
  
  <pre><code>adapter = new HistoricAdapter(activity, lista);
  getListView().smoothScrollToPosition(15);
  setListAdapter(adapter);
  </code></pre>
  
  <p>but this doesn´t work:</p>
  
  <pre><code>adapter = new HistoricAdapter(activity, lista);
  getListView().setSelection(15);
  setListAdapter(adapter);
  </code></pre>
  
  <p>why? I want the second option but it doesn´t work :-(</p>