ReorderableGridView

Copy from official ReorderableListView

Usage:

dependencies:
  reorderable_grid_view: ^2.2.6

Example

class _MyHomePageState extends State<MyHomePage> {
  final data = [1, 2, 3, 4, 5];

  @override
  Widget build(BuildContext context) {
    Widget buildItem(String text) {
      return Card(
        key: ValueKey(text),
        child: Text(text),
      );
    }

    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),

      body: Center(
        // use ReorderableGridView.count() when version >= 2.0.0
        // else use ReorderableGridView()
        child: ReorderableGridView.count(
          crossAxisSpacing: 10,
          mainAxisSpacing: 10,
          crossAxisCount: 3,
          children: this.data.map((e) => buildItem("$e")).toList(),
          onReorder: (oldIndex, newIndex) {
            setState(() {
              final element = data.removeAt(oldIndex);
              data.insert(newIndex, element);
            });
          },
          footer: [
            Card(
              child: Center(
                child: Icon(Icons.add),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

Options

option desc
dragWidgetBuilderV2 the drag widget builder
restrictDragScope restrict drag scope to ReorderableGridView, not drag over the scree, default is false

Constructors

  • ReorderableGridView.builder
  • ReorderableGridView.count
  • ReorderableSliverGridView.count

custom reorderable

You can use ReorderableWrapperWidget to custom your reorderable. Use ReorderableWrapperWidget as root. and it's descendants is ReorderableItemView[] list

  • ReorderableWrapperWidget(child: SomeCollection(children: ReorderableItemView))

Important

  • the placeholderBuilder is not right when the list is very long, is not fixable for now. please see issue 47
  • can drag out of scope is not fixable for now, please see issue 52

TODO

fix placeholderBuilder is not right when the list is very long

fix Overlay can drag out of container issue.

Other link project

If this project is not fit your meet, you can try those other projects

Libraries

reorderable_grid_view