onSelected property Null safety

VoidCallback? onSelected

Returns a callback, if any, to be invoked if the platform menu receives a "Menu.selectedCallback" method call from the platform for this item.

Only items that do not have submenus will have this callback invoked.

Only one of onSelected or onSelectedIntent may be specified.

If neither onSelected nor onSelectedIntent are specified, then this menu item is considered to be disabled.

The default implementation returns null.

Implementation

VoidCallback? get onSelected => null;