title: set onClickListener for spinner item?
body: <p>I have spinner which populates from database:</p>
  
  <pre><code>catSpinner = (Spinner) findViewById(R.id.spinner1);
  cursor = dataAdapter.getAllCategory();
  startManagingCursor(cursor);
  String[] from = new String[] { DataAdapter.CATEGORY_COL_NAME };
  int[] to = new int[] { android.R.id.text1 };
  SimpleCursorAdapter catAdapter = new SimpleCursorAdapter(this,  
             android.R.layout.simple_spinner_dropdown_item, cursor, from,to, 0);
  catAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
  catAdapter.notifyDataSetChanged();
  catSpinner.setAdapter(catAdapter);
  </code></pre>
  
  <p>And I want to call <code>AlertDialog</code> when I select last item(<code>Add new category...</code>).<br>
  After I added new category I want that "item(<code>Add new category...</code>)"  was the last again.<br>
  How I can do this?</p>