tileHoverColor property Null safety

Color? tileHoverColor
final

Customizes the appearance of the hovered tile’s fill color.

 late List<SocialMediaUsers> _source;

  @override
  void initState() {
    _source = <SocialMediaUsers>[
      SocialMediaUsers('India', 'Facebook', 280),
      SocialMediaUsers('India', 'Instagram', 88),
      SocialMediaUsers('USA', 'Facebook', 190),
      SocialMediaUsers('USA', 'Instagram', 120),
      SocialMediaUsers('Japan', 'Twitter', 48),
      SocialMediaUsers('Japan', 'Instagram', 31),
    ];
    super.initState();
  }

 @override
  Widget build(BuildContext context) {
    return Scaffold(
     body: SfTreemap(
        dataCount: _source.length,
        weightValueMapper: (int index) {
          return _source[index].usersInMillions;
        },
        levels: [
          TreemapLevel(
            groupMapper: (int index) {
              return _source[index].country;
            },
          ),
        ],
        onSelectionChanged: (TreemapTile tile) {},
        tileHoverColor: Colors.green,
      ),
    );
  }

Implementation

final Color? tileHoverColor;