A ChangeNotifier that holds a single value.
When value is replaced, this class notifies its listeners.
- value ↔ T
The current value stored in this notifier. [...]
read / write
- hashCode → int
The hash code for this object. [...]
- hasListeners → bool
Whether any listeners are currently registered. [...]
@protected, read-only, inherited
- runtimeType → Type
A representation of the runtime type of the object.
) → String
- Returns a string representation of this object.
VoidCallback listener) → void
Register a closure to be called when the object changes. [...]
) → 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
Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
) → void
Call all the registered listeners. [...]
void listener) → void
Remove a previously registered closure from the list of closures that are
notified when the object changes. [...]