title: How to add List view with dynamic selection checkbox inside expansion tile in flutter
body: <p>I am facing problem to add listview with checkbox inside multiple ExpansionTile. Also, a checkbox has to be dynamically selection. </p>
  
  <p>In this images I've created one expansion tile and inside I had put list tile with checkbox but when I am adding multiple expansion tile all are either selected or not selected based on value but i want to select user wanted value it means it should be dynamically</p>
  
  <pre><code>body: ExpansionTile(
        title: Text("Expansion"),
        children: _listViewData
            .map((data) =&gt; CheckboxListTile(
                  title: Text(data),
                  value: _isChecked,
                  onChanged: (val) {
                    setState(() {
                      _isChecked = val;
                    });
                  },
                ))
            .toList(),
      ));
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/2eHhq.png" rel="nofollow noreferrer">Here is the image</a></p>