NotificationListener<T extends NotificationNotifierMixin<Y> , Y> class
A listener for ChangeNotifier that extends NotificationNotifierMixin mixin
Wrapping a widget with NotificationListener will display an Overlay called from the ChangeNotifier class with notifyNotification
Useful to display in-app notifications
As an example:
ChangeNotifierProvider.value(
value: _model,
child: Scaffold(
appBar: AppBar(),
body: NotificationListener<Model>(
child: ListView()
)
)
);
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- NotificationListener
Constructors
Properties
- bodyBuilder → (Widget Function(Y message)?)
-
final
- child → Widget
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- leadingBuilder → (Widget Function(Y message)?)
-
final
- onTap → (void Function(Y message)?)
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- titleBuilder → Widget Function(Y message)
-
final
- trailingBuilder → (Widget Function(Y message)?)
-
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → _NotificationListenerState< NotificationNotifierMixin, dynamic> -
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.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}) → 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