PlatformSegmentButton<T extends Object> class
A platform-adaptive segmented button that renders Material SegmentedButton on Android and CupertinoSlidingSegmentedControl on iOS.
This widget automatically selects the appropriate segmented button implementation based on the target platform:
- On Android: renders Material Design SegmentedButton
- On iOS: renders CupertinoSlidingSegmentedControl
The segmented button can be configured with platform-specific data through materialSegmentButtonData and cupertinoSegmentButtonData, or with common properties.
Note: On Android, only supports single selection due to use in CupertinoSlidingSegmentedControl.
Example:
PlatformSegmentButton<String>(
choices: ['Day', 'Week', 'Month'],
selectedChoice: _selectedView,
onSelectionChanged: (choice) => setState(() => _selectedView = choice),
segmentBuilder: (choice) => Text(choice),
)
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- PlatformWidgetBase
- PlatformWidgetKeyedBase
- PlatformSegmentButton
Constructors
-
PlatformSegmentButton({required Iterable<
T> ? choices, required Widget segmentBuilder(T choice)?, required T? selectedChoice, required ValueChanged<T?> ? onSelectionChanged, MaterialSegmentButtonData<T> ? materialSegmentButtonData, CupertinoSegmentButtonData<T> ? cupertinoSegmentButtonData, Key? widgetKey, Key? key}) -
Creates a platform-adaptive segmented button.
const
Properties
-
choices
→ Iterable<
T> ? -
The list of choices to display as segments.
final
-
cupertinoSegmentButtonData
→ CupertinoSegmentButtonData<
T> ? -
Cupertino-specific segmented button data.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
materialSegmentButtonData
→ MaterialSegmentButtonData<
T> ? -
Material-specific segmented button data.
final
-
onSelectionChanged
→ ValueChanged<
T?> ? -
Callback when the selected segment changes.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- segmentBuilder → Widget Function(T choice)?
-
Builder function for creating the widget representation of each segment.
final
- widgetKey → Key?
-
Optional key applied to the inner platform-specific widget.
finalinherited
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
inherited
-
buildCupertino(
BuildContext context) → Widget -
Builds the Cupertino (iOS) variant of this widget.
override
-
buildMaterial(
BuildContext context) → Widget -
Builds the Material Design (Android) variant of this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent 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, int wrapWidth = 65}) → 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.
inherited