解决 Flutter Exception Attempting to start a drag on a non-visible item

解决 Flutter Exception: Attempting to start a drag on a non-visible item:

List<String> items = List.generate(20, (int i) => '$i');
ReorderableListView(
  children: <Widget>[
    for (String item in items)
      Container(
        key: ValueKey(item),
        height: 100,
        margin: EdgeInsets.symmetric(horizontal: 50, vertical: 10),
        decoration: BoxDecoration(
            color:
                Colors.primaries[int.parse(item) % Colors.primaries.length],
            borderRadius: BorderRadius.circular(10)),
      )
  ],
  onReorder: (int oldIndex, int newIndex) {
    if (oldIndex < newIndex) {
      newIndex -= 1;
    }
    var child = items.removeAt(oldIndex);
    items.insert(newIndex, child);
    setState(() {});
  },
)