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 informations, see ChangeNotifierProvider, a subclass of ListenableProvider made for ChangeNotifier.

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

Inheritance
Implemented types
Implementers

Constructors

ListenableProvider({Key key, @required ValueBuilder<T> create, @Deprecated('Will be removed as part of 4.0.0, use create instead') ValueBuilder<T> builder, Disposer<T> dispose, Widget child })
Creates a Listenable using create and subscribes to it. [...]
ListenableProvider.value({Key key, @required T value, Widget child })
Provides an existing Listenable.

Properties

child Widget
The widget that is below the current ListenableProvider widget in the tree. [...]
final
delegate ValueStateDelegate<T>
The current state of DelegateWidget. [...]
@protected, read-only, inherited
hashCode → int
The hash code for this object.
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

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
override
cloneWithChild(Widget child) ListenableProvider<T>
Clones the current provider with a new child. [...]
override
createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
createState() → _DelegateWidgetState
Creates the mutable state for this widget at a given location in the tree. [...]
inherited
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.debug }) → String
Returns 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 ==(dynamic other) → bool
The equality operator.
inherited