### Open iOS Project in Xcode

Source: https://github.com/hcbpassos/drag_select_grid_view/blob/master/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

Command to open the iOS runner project in Xcode, allowing access to project settings and assets like the launch screen.

```Shell
open ios/Runner.xcworkspace
```

--------------------------------

### Implementing Basic DragSelectGridView Usage in Flutter

Source: https://github.com/hcbpassos/drag_select_grid_view/blob/master/README.md

This snippet shows how to integrate `DragSelectGridView` into a Flutter application. It demonstrates initializing and managing a `DragSelectGridViewController`, attaching listeners for state changes, and building the grid view with a custom item builder and grid delegate. It also shows how to dispose of the controller.

```Dart
class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final controller = DragSelectGridViewController();

  @override
  void initState() {
    super.initState();
    controller.addListener(scheduleRebuild);
  }

  @override
  void dispose() {
    controller.removeListener(scheduleRebuild);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: SelectionAppBar(
        selection: controller.value,
      ),
      body: DragSelectGridView(
        gridController: controller,
        itemCount: 20,
        itemBuilder: (context, index, selected) {
          return SelectableItem(
            index: index,
            selected: selected,
          );
        },
        gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
          maxCrossAxisExtent: 80,
        ),
      ),
    );
  }

  void scheduleRebuild() => setState(() {});
}
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.