AnimatedSize class Null safety

Animated widget that automatically transitions its size over a given duration whenever the given child's size changes.

This example makes a Container react to being touched, causing the child of the AnimatedSize widget, here a FlutterLogo, to animate.

To create a local project with this code sample, run:
flutter create --sample=widgets.AnimatedSize.1 mysample

Constructors

AnimatedSize({Key? key, Widget? child, AlignmentGeometry alignment = Alignment.center, Curve curve = Curves.linear, required Duration duration, Duration? reverseDuration, @Deprecated('This field is now ignored. ' 'This feature was deprecated after v2.2.0-10.1.pre.') TickerProvider? vsync, Clip clipBehavior = Clip.hardEdge}): Creates a widget that animates its size to match that of its child.
const

alignment → AlignmentGeometry: The alignment of the child within the parent when the parent is not yet the same size as the child.
final
child → Widget?: The widget below this widget in the tree.
final
clipBehavior → Clip: The content will be clipped (or not) according to this option.
final
curve → Curve: The animation curve when transitioning this widget's size to match the child's size.
final
duration → Duration: The duration when transitioning this widget's size to match the child's size.
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
reverseDuration → Duration?: The duration when transitioning this widget's size to match the child's size when going in reverse.
final
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited

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

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