onPointLongPress property

ChartPointInteractionCallback? onPointLongPress

Called when long pressed on the chart data point.

The user can fetch the series index, point index, view port index and data of the long-pressed data point.

Widget build(BuildContext context) {
   ChartSeriesController _chartSeriesController;
   return Container(
       child: SfCartesianChart(
           series: <LineSeries<SalesData, num>>[
               LineSeries<SalesData, num>(
                   onPointLongPress: (ChartPointDetails details) {
                      print(details.pointIndex);
                   },
               ),
             ],
       )
    );
}

Implementation

final ChartPointInteractionCallback? onPointLongPress;