ReorderableGridView class

Ordering children in a Wrap that can be drag and dropped.

Simple way of drag and drop children that were built inside a Wrap.

To enable the possibility of the drag and drop, it's important to build all children inside a Wrap. After that every child is added to the entity GridItemEntity that contains the position and orderId of the build item. When all items are added to new map animatedChildren, the widget is reconstructing the wrap inside a Container. This Container has the same size as the Wrap. Inside the Container, all children are rebuild with a Positioned widget. At the end, the same widget is build without a Wrap but now it's possible to update the positions of the widgets with a drag and drop.

A list of children that are build inside a Wrap.

Using spacing adds a space in vertical direction between children. The default value is 8.

Using runSpacing adds a space in horizontal direction between children. The default value is 8.

enableAnimation is enabling the animation of changing the positions of children after drag and drop. The default value is true.

With enableLongPress you can decide if the user needs a long press to move the item around. The default value is true.

onUpdate always give you the old and new index of the moved children. Make sure to update your list of children that you used to display your data. See more on the example.