color property

Color? color
final

Customizes the color of the trackball line. The color is set based on the current application theme, if its value is set to null.

Defaults to null.

@override
Widget build(BuildContext context) {
 return Scaffold(
   body: Center(
       child: SfSparkAreaChart(
     trackball: SparkChartTrackball(
     color: Colors.black,),
     data: <double>[18, 24, 30, 14, 28],
   )),
 );
}

Implementation

final Color? color;