ListenableProvider<T extends Listenable?> class

Listens to a Listenable, expose it to its descendants and rebuilds dependents whenever the listener emits an event.

For usage information, see ChangeNotifierProvider, a subclass of ListenableProvider made for ChangeNotifier.

You will generally want to use ChangeNotifierProvider instead. But ListenableProvider is available in case you want to implement Listenable yourself, or use Animation.

Inheritance
Implemented types

Constructors

ListenableProvider({Key? key, required Create<T> create, Dispose<T>? dispose, bool? lazy, TransitionBuilder? builder, Widget? child})
Creates a Listenable using create and subscribes to it.
ListenableProvider.value({Key? key, required T value, UpdateShouldNotify<T>? updateShouldNotify, TransitionBuilder? builder, Widget? child})
Provides an existing Listenable.

Properties

builder → TransitionBuilder?
Syntax sugar for obtaining a BuildContext that can read the provider created.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
buildWithChild(BuildContext context, Widget? child) → Widget
A build method that receives an extra child parameter.
inherited
createElement() → _InheritedProviderElement<T>
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