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This package helps you to add drag & drop functionality to existing Gridview.builder.

flutter_draggable_gridview #

flutter_draggable_gridview version flutter_draggable_gridview Git Stars MIT License

This package supports drag & drop widgets inside the GridView.builder for multiplatform. It provides all the properties which are available in Gridview.builder and easy to implement with the few lines of code.

Draggable GridView. #

Draggable GridView

Usage #

Example #

      DraggableGridViewBuilder(
        gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: 2,
          childAspectRatio: MediaQuery.of(context).size.width / (MediaQuery.of(context).size.height / 3),
        ),
        children: _listOfDraggableGridItem,
        isOnlyLongPress: false,
        dragCompletion: (List<DraggableGridItem> list, int beforeIndex, int afterIndex) {
          print( 'onDragAccept: $beforeIndex -> $afterIndex');
        },
        dragFeedback: (List<DraggableGridItem> list, int index) {
          return Container(
            child: list[index].child,
            width: 200,
            height: 150,
          );
        },
        dragPlaceHolder: (List<DraggableGridItem> list, int index) {
          return PlaceHolderWidget(
            child: Container(
              color: Colors.white,
            ),
          );
        },
      );

Required parameters #

gridDelegate:

A delegate that controls the layout of the children within the GridView.

children:

This property contains list of [DraggableGridItem] and it is use to show the widget inside the GridView.builder to provide the drag & drop functionality. Also, it contains isDraggable parameter which manages enable/disable the drag & drop functionality.

dragCompletion:

This callback provides updated list and old and new indexes.

Optional parameters #

isOnlyLongPress:

This property contains bool value. If this property is false then it works with simple press draggable or else it works with long press. default value is 'true'.

dragFeedback:

With this callback, you have to return a Widget and we will use this widget in feedback. Learn more about feedback from Draggable class.

dragPlaceHolder:

TWith this callback, you have to return a PlaceHolderWidget and we will use this widget in place holder.

dragChildWhenDragging:

With this callback, you have to return a Widget and we will display this widget instead of child when drags are under way. Learn more about childWhenDragging from Draggable class.

Last But Not Least 😍 #

You can use all the GridView.builder properties with DraggableGridViewBuilder class.

Note: #

The result returns in List. so it can be lost later, you are responsible for storing it somewhere permanent (if needed).

Guideline for contributors #

Contribution towards our repository is always welcome, we request contributors to create a pull request to the develop branch only.

Guideline to report an issue/feature request #

It would be great for us if the reporter can share the below things to understand the root cause of the issue.

  • Library version
  • Code snippet
  • Logs if applicable
  • Device specification like (Manufacturer, OS version, etc)
  • Screenshot/video with steps to reproduce the issue

LICENSE! #

Flutter Draggable GridView is MIT-licensed.

Let us know! #

We’d be really happy if you send us links to your projects where you use our component. Just send an email to sales@mindinventory.com And do let us know if you have any questions or suggestion regarding our work.

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verified publishermindinventory.com

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This package helps you to add drag & drop functionality to existing Gridview.builder.

Repository (GitHub)
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Documentation

API reference

License

MIT (license)

Dependencies

flutter

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