title: flutter add widgets on top and bottom to a listview
body: <p>Trying to add some widgets to before of a listview....
  I searched and found to use expanded like:</p>
  
  <pre><code>  return Scaffold(
      appBar: AppBar(
        title: Text('Test Listview'),
      ),
      body: Container(
        padding: const EdgeInsets.all(10.0),
        child: Column(
          children: &lt;Widget&gt;[
            Text('header'),
            Expanded(
              child: ListView.builder(
                itemCount: providerApp.domains.length,
                itemBuilder: (BuildContext context, int index) {
                  return Container( ......
  </code></pre>
  
  <p>But the issue here is that the Text('header') will be fixed, looking for some way where the the widget scrolls together with listview...</p>
  
  <p>Thanks !!!</p>