A Listenable which can be manually triggered.

Used with KeepAliveNotification objects as their KeepAliveNotification.handle.

For a more convenient way to interact with AutomaticKeepAlive widgets, consider using AutomaticKeepAliveClientMixin, which uses a KeepAliveHandle internally.

Inheritance

Constructors

KeepAliveHandle()

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

release() → void
Trigger the listeners to indicate that the widget no longer needs to be kept alive.
addListener(VoidCallback listener) → void
Register a closure to be called when the object changes. [...]
inherited
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener and removeListener will throw after the object is disposed). [...]
@mustCallSuper, inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
notifyListeners() → void
Call all the registered listeners. [...]
@protected, inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes. [...]
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(other) bool
The equality operator. [...]
inherited