Enabled and disabled states in Flutter Slider (SfSlider)

30 Mar 202311 minutes to read

This section helps to learn about the enabled and disabled state in the Flutter slider.

Enabled state

The slider will be in enabled state if onChanged is set.

Horizontal

DART

double _value = 5.0;

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Center(
              child: SfSlider(
                min: 0.0,
                max: 10.0,
                value: _value,
                onChanged: (dynamic newValue) {
                  setState(() {
                    _value = newValue;
                  });
                },
              )
          )
      )
  );
}

Vertical

DART

double _value = 5.0;

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Center(
              child: SfSlider.vertical(
                min: 0.0,
                max: 10.0,
                value: _value,
                onChanged: (dynamic newValue) {
                  setState(() {
                    _value = newValue;
                  });
                },
              )
          )
      )
  );
}

Disabled state

The slider will be in disabled state if onChanged is null.

Horizontal

DART

double _value = 5.0;

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Center(
              child: SfSlider(
                min: 0.0,
                max: 10.0,
                value: _value,
                onChanged: null,
              )
          )
      )
  );
}

Vertical

DART

double _value = 5.0;

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Center(
              child: SfSlider.vertical(
                min: 0.0,
                max: 10.0,
                value: _value,
                onChanged: null,
              )
          )
      )
  );
}

Disabled color

You can change,

• The color of the active and inactive track in disabled state using the disabledActiveTrackColor and disabledInactiveTrackColor properties.
• The color of the active and inactive major ticks in disabled state using the disabledActiveTickColor and disabledInactiveTickColor properties.
• The color of the active and inactive minor ticks in disabled state using the disabledActiveMinorTickColor and disabledInactiveMinorTickColor properties.
• The color of the active and inactive dividers in disabled state using the disabledActiveDividerColor and disabledInactiveDividerColor properties.
• The color of the thumb in disabled state using the disabledThumbColor property.

NOTE

You must import the theme.dart library from the Core package to use SfSliderTheme.

Horizontal

DART

double _value = 6.0;

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Center(
              child: SfSliderTheme(
                data: SfSliderThemeData(
                  disabledActiveTrackColor: Colors.orange,
                  disabledInactiveTrackColor: Colors.orange[200],
                  disabledActiveTickColor: Colors.orange,
                  disabledInactiveTickColor: Colors.orange[200],
                  disabledActiveMinorTickColor: Colors.orange,
                  disabledInactiveMinorTickColor: Colors.orange[200],
                  disabledActiveDividerColor: Colors.purple,
                  disabledInactiveDividerColor: Colors.purple[200],
                  disabledThumbColor: Colors.orange,
                ),
                child: SfSlider(
                  min: 2.0,
                  max: 10.0,
                  interval: 2,
                  showTicks: true,
                  minorTicksPerInterval: 1,
                  showDividers: true,
                  value: _value,
                  onChanged: null,
                ),
              )
          )
      )
  );
}

Vertical

DART

double _value = 6.0;

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Center(
              child: SfSliderTheme(
                data: SfSliderThemeData(
                  disabledActiveTrackColor: Colors.orange,
                  disabledInactiveTrackColor: Colors.orange[200],
                  disabledActiveTickColor: Colors.orange,
                  disabledInactiveTickColor: Colors.orange[200],
                  disabledActiveMinorTickColor: Colors.orange,
                  disabledInactiveMinorTickColor: Colors.orange[200],
                  disabledActiveDividerColor: Colors.purple,
                  disabledInactiveDividerColor: Colors.purple[200],
                  disabledThumbColor: Colors.orange,
                ),
                child: SfSlider.vertical(
                  min: 2.0,
                  max: 10.0,
                  interval: 2,
                  showTicks: true,
                  minorTicksPerInterval: 1,
                  showDividers: true,
                  value: _value,
                  onChanged: null,
                ),
              )
          )
      )
  );
}