title: How to add a "plus" button on top of emptyView in ListView
body: <p>I'd like to add a <code>Button</code> like this one below into my <code>ListView</code> when the list is empty using the <code>setEmptyView()</code> method.</p>
  
  <p>Is there a built-in style in Android for this? Because I noticed that a few apps are using exactly the same <code>Button</code> style.</p>