OnTap后刷新Flutter ListView

Question

我想更改选定项目（_ itemSelected）的视图。当我选择一个项目但其他项目没有刷新时，它可以工作。是否有类似notifydatasetchanged的东西？我错过了什么？谢谢！

class MyItemListItem extends State<MyItemList> {
  final MyItem item;

  MyItemListItem(this.item);

  @override
  Widget build(BuildContext context) {
    return new ListTile(
        key: _itemListItem,
        onTap: () {
          _scaffoldKey.currentState.showSnackBar(new SnackBar(
              content: new Text("You clicked item number " + item.name)));
          _itemSelected = item;

          setState(() {

          });
        },
        leading: new CircleAvatar(backgroundColor: Colors.blue),
        title: _itemSelected != null && item == _itemSelected
            ? new Row(children: <Widget>[new Text("Foo"), new Text("Bar")])
            : new Row(
                children: <Widget>[
                  new Expanded(child: new Text(item.name)),
                ],
              ));
  }
}

Answer 1

好的，我发现了问题所在。 就像GünterZöchbauer建议我添加的

_scaffoldKey.currentState.showSnackBar(new SnackBar(
              content: new Text("You clicked item number " + item.name)));
          _itemSelected = item;

          home.addItem();

        },

其中home是父窗口小部件。

void addItem() {
    setState(() {

    });
  }