activationMode property

ActivationMode activationMode
final

Gesture for activating the crosshair.

Crosshair can be activated in tap, double tap and long press.

Defaults to ActivationMode.longPress

Also refer ActivationMode

Widget build(BuildContext context) {
   return Container(
       child: SfCartesianChart(
          crosshairBehavior: CrosshairBehavior(
              enable: true, activationMode: ActivationMode.doubleTap),
       ));
}

Implementation

final ActivationMode activationMode;