AutoCancelStreamMixin<T extends StatefulWidget> mixin

在State.dispose中自动取消Stream的mixin类

帮助管理StreamSubscription并自动取消


class _ExampleState extends State<Example> with AutoCancelStreamMixin{

 @override
 Iterable<StreamSubscription> get registerSubscriptions sync* {
   yield registerReceiver([actionExample]).listen((intent) {
       setState(() {
         /// do something
       });
     },
   );
 }

}
Superclass Constraints

Properties

context → BuildContext
The location in the tree where this widget builds.
no setterinherited
firstAtInitState → bool
是否在initState中装配registerSubscriptions
no setter
hashCode → int
The hash code for this object.
no setterinherited
mounted → bool
Whether this State object is currently in a tree.
no setterinherited
registerSubscriptions → Iterable<StreamSubscription>
自动监听并注册StreamSubscription
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
widget → T
The current configuration.
no setterinherited

Methods

activate() → void
Called when this object is reinserted into the tree after having been removed via deactivate.
inherited
addSubscription(StreamSubscription subscription) → void
将一个subscription添加到自动管理集合
build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
cancelSubscriptionAll() → void
手动取消自动管理集合中的StreamSubscription并清空集合
deactivate() → void
Called when this object is removed from the tree.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
didChangeDependencies() → void
Called when a dependency of this State object changes.
override
didUpdateWidget(covariant T oldWidget) → void
Called whenever the widget configuration changes.
inherited
dispose() → void
Called when this object is removed from the tree permanently.
override
initState() → void
Called when this object is inserted into the tree.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reassemble() → void
Called whenever the application is reassembled during debugging, for example during hot reload.
inherited
setState(VoidCallback fn) → void
Notify the framework that the internal state of this object has changed.
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
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited