AnimatedExpand class

A customizable widget that expands and collapses with animation.

It supports both vertical and horizontal expansion, custom headers, and external controllers for programmatic control.

Inheritance

Constructors

AnimatedExpand({Key? key, required Widget expandedHeader, Widget? collapsedHeader, Widget? content, ExpandController? controller, ExpandState initialState = ExpandState.collapsed, Axis axis = Axis.vertical, double spacing = 0.0, Curve curve = Curves.fastOutSlowIn, Duration duration = Durations.medium1, Duration reverseDuration = Duration.zero, MainAxisSize mainAxisSize = MainAxisSize.min, MainAxisAlignment mainAxisAlignment = MainAxisAlignment.start, CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.center, Clip clipBehavior = Clip.hardEdge, bool reversed = false, void onEnd()?, AlignmentGeometry animationAlignment = Alignment.center})
Creates an AnimatedExpand widget.
const

Properties

animationAlignment → AlignmentGeometry
Defines how the expanding content is aligned within its available space.
final
axis → Axis
The axis along which the widget expands. Default is Axis.vertical.
final
clipBehavior → Clip
The clipping behavior applied to the expanding content.
final
collapsedHeader → Widget?
The widget displayed when the expand state is collapsed.
final
content → Widget?
The content that expands and collapses.
final
controller → ExpandController?
The controller used to manage the expand/collapse state.
final
crossAxisAlignment → CrossAxisAlignment
Defines how the child widgets are positioned along the cross axis.
final
curve → Curve
The animation curve used for expansion and collapse.
final
duration → Duration
The duration of the expansion animation.
final
expandedHeader → Widget
The widget displayed when the expand state is expanded.
final
hashCode → int
The hash code for this object.
no setterinherited
initialState → ExpandState
The initial state of the widget.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
mainAxisAlignment → MainAxisAlignment
Defines how the child widgets are positioned along the main axis.
final
mainAxisSize → MainAxisSize
Determines how much space the main axis should take.
final
onEnd → void Function()?
A callback triggered when the animation completes.
final
reversed → bool
If true, places the content before the header.
final
reverseDuration → Duration
The duration of the collapse animation.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
spacing → double
The spacing between the header and the expandable content.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<AnimatedExpand>
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.
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