Observable class

Single case

Constructors

Observable()

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

observers ↔ List<Observer>

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

addObserver(Observer observer) → dynamic

Add observer

addRepeatedlyObserver(Observer observer) → dynamic

重复添加 add Repeatedly

length() → int

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notifyObservers(List<String> stateNames, {String? notifyName, Map? map}) → dynamic

Used in the page that sent the notification stateNames state name to update Map notification data, can be null

removeObserver(Observer observer) → dynamic

Remove viewers when the page is not in use

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

instance → Observable

no setter