title: Centering layout in Flutter
body: <p>If I use the following structure in the <code>Scaffold</code>:</p>
  <pre><code>  body: Container(
        alignment: Alignment.center,
        child:
          Text('Test')  
    )
  </code></pre>
  <p>Then the text is vertically and centrally structured, as I want. But if I do the following:</p>
  <pre><code>body: Container(
        alignment: Alignment.center,
        child:
          ListView(
            children:people.map(person).toList(),
          ),
  
    )
  </code></pre>
  <p>Then the ListView is stuck to the top left of the body and isn't centered.</p>
  <p>Why is that, and how can I center the ListView the same way that Text was centered?</p>