CupertinoSlider class Null safety

An iOS-style slider.

Used to select from a range of values.

A slider can be used to select from either a continuous or a discrete set of values. The default is use a continuous range of values from min to max. To use discrete values, use a non-null value for divisions, which indicates the number of discrete intervals. For example, if min is 0.0 and max is 50.0 and divisions is 5, then the slider can take on the values discrete values 0.0, 10.0, 20.0, 30.0, 40.0, and 50.0.

The slider itself does not maintain any state. Instead, when the state of the slider changes, the widget calls the onChanged callback. Most widgets that use a slider will listen for the onChanged callback and rebuild the slider with a new value to update the visual appearance of the slider.

link
This example shows how to show the current slider value as it changes.
To create a local project with this code sample, run:
flutter create --sample=cupertino.CupertinoSlider.1 mysample

See also:

Inheritance

Constructors

CupertinoSlider({Key? key, required double value, required ValueChanged<double>? onChanged, ValueChanged<double>? onChangeStart, ValueChanged<double>? onChangeEnd, double min = 0.0, double max = 1.0, int? divisions, Color? activeColor, Color thumbColor = CupertinoColors.white})
Creates an iOS-style slider.
const

Properties

activeColor → Color?
The color to use for the portion of the slider that has been selected.
final
divisions → int?
The number of discrete divisions.
final
hashCode → int
The hash code for this object.
nonVirtual">@nonVirtualread-onlyinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
max → double
The maximum value the user can select.
final
min → double
The minimum value the user can select.
final
onChanged → ValueChanged<double>?
Called when the user selects a new value for the slider.
final
onChangeEnd → ValueChanged<double>?
Called when the user is done selecting a new value for the slider.
final
onChangeStart → ValueChanged<double>?
Called when the user starts selecting a new value for the slider.
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
thumbColor → Color
The color to use for the thumb of the slider.
final
value → double
The currently selected value for this slider.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<CupertinoSlider>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
protected">@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
nonVirtual">@nonVirtualinherited