tooltipBehavior property Null safety

TooltipBehavior tooltipBehavior
final

Customizes the tooltip in chart.

TooltipBehavior _tooltipBehavior;

@override
void initState() {
  _tooltipBehavior = TooltipBehavior(enable: true);
  super.initState();
}

Widget build(BuildContext context) {
   return Container(
       child: SfPyramidChart(
           tooltipBehavior: _tooltipBehavior
       )
   );
}

Implementation

final TooltipBehavior tooltipBehavior;