tooltipTextStyle property Null safety

TextStyle? tooltipTextStyle
final

Specifies the appearance for the tooltip in the SfSlider, SfRangeSlider, and SfRangeSelector.

This snippet shows how to set tooltip label style in SfRangeSliderThemeData.

SfRangeValues _values = SfRangeValues(4.0, 8.0);

Scaffold(
    body: Center(
        child: SfRangeSliderTheme(
            data: SfRangeSliderThemeData(
                tooltipTextStyle: TextStyle(color: Colors.red,
                fontSize: 16, fontStyle: FontStyle.italic),
            ),
            child:  SfRangeSlider(
                min: 2.0,
                max: 10.0,
                values: _values,
                interval: 1,
                showTicks: true,
                showLabels: true,
                showTooltip: true,
                onChanged: (SfRangeValues newValues){
                    setState(() {
                        _values = newValues;
                    });
                },
           )
       ),
   )
)

Implementation

final TextStyle? tooltipTextStyle;