onPointLongPress property
Called when long pressed on the chart data point.
The user can fetch the series index, point index, viewport point index and data of the long-pressed data point.
Widget build(BuildContext context) {
return SfCartesianChart(
series: <LineSeries<SalesData, num>>[
LineSeries<SalesData, num>(
onPointLongPress: (ChartPointDetails details) {
print(details.pointIndex);
},
),
],
);
}
Implementation
final ChartPointInteractionCallback? onPointLongPress;