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

See also:

Inheritance

Constructors

AnimatedSize({Key? key, Widget? child, AlignmentGeometry alignment, Curve curve, required Duration duration, Duration? reverseDuration, required TickerProvider vsync, Clip clipBehavior})
Creates a widget that animates its size to match that of its child. [...]
const

Properties

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, inherited
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, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
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-only, inherited
vsync TickerProvider
The TickerProvider for this widget.
final

Methods

createElement() SingleChildRenderObjectElement
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
createRenderObject(BuildContext context) RenderAnimatedSize
Creates an instance of the RenderObject class that this RenderObjectWidget represents, using the configuration described by this RenderObjectWidget. [...]
override
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
override
didUnmountRenderObject(covariant RenderObject renderObject) → void
A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.
@protected, 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
updateRenderObject(BuildContext context, covariant RenderAnimatedSize renderObject) → void
Copies the configuration described by this RenderObjectWidget to the given RenderObject, which will be of the same type as returned by this object's createRenderObject. [...]
override

Operators

operator ==(Object other) bool
The equality operator. [...]
@nonVirtual, inherited