DelayedValueBuilder class

This widget updates a value for his child after a delay. Useful if you want to delay values for Foo animations.

Give the DelayedValueBuilder a value. Then you can access the delayed value in the builder. When you call setState the value in the builder will be updated after the delay.

Example:

DelayedValueBuilder(
 builder: (context, value) => AnimatedContainer(
   duration: Duration(milliseconds: 200),
   color: value ? Colors.green : Colors.black,
   height: 40,
   width: 40,
 ),
 value: animate,
 delay: Duration(milliseconds: 700),
),
Inheritance

Constructors

DelayedValueBuilder({Key key, @required dynamic value, @required DelayBuilder builder, Duration delay = const Duration(milliseconds: 200)})
const

Properties

builder DelayBuilder
final
delay Duration
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
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
value → dynamic
For multiple values you can pass a List.
final

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
createState() → _DelayedValueBuilderState
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, inherited
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

Operators

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