Observer class abstract

First change the page of the data using the with field inheritance Implement this abstract class to receive notifications sent by Observables. In the state initState method you need to call Observable().addObserver(this); Call Observable().removeObserver(this) in the state dispose method;

Constructors

Observer()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

update(Observable observable, String? notifyName, Map? map) → dynamic

Operators

operator ==(Object other) → bool

The equality operator.

inherited