Expansion Tile and ListView

I'm trying to create this layout for an app, I've used an expansion tile inside a Card and a listView below , but when I open expansionTile, hitting the bottom of the screen would this and if the listView has many tiles happens this , I can not solve this problem in any way.

Here is my code below:

     class HomeState extends State<Teste>{
      @override
      Widget build(BuildContext context) {
        return Scaffold(
          appBar: AppBar(
            title: Text (""),
          ),
            body: Container(
              padding: EdgeInsets.all(15.0),
              child: Column(
                children: <Widget>[
                  CardList(),
                  MyList()
                ],
              ),
            ),
        );
      }
    }

    Widget CardList(){
      return new Flexible(
          child: Card(
            elevation: 5,
            color: Color.fromARGB(255, 0xC8, 0xF4, 0xF2),
            child: ExpansionTile(
              title: Text("Periodo",
                style: new TextStyle(
                ),textAlign: TextAlign.center,
              ),
              children: <Widget>[
                ListaPeriodos(10)
              ],
            ),
          )
      );
    }

Widget MyList(){
  return new ListView.builder(
    padding: EdgeInsets.all(10.0),
    shrinkWrap: true,
    itemBuilder: (BuildContext context, int index) {
      return new ListTile(
        title: new Text(
          "Texto",
          textAlign: TextAlign.center,
          style: new TextStyle(
            fontWeight: FontWeight.normal,
            color: Colors.black45
          ),
        ),
      );
    },
    itemCount: 15,
  );
}