LiveData<T> class
状态值
- Inheritance
-
- Object
- ChangeNotifier
- LiveData
- Implemented types
- Available Extensions
Constructors
- LiveData.useState(T _value, {bool notify = false})
- 需要手动调用 liveData.dispose() 销毁
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- hostDispose ↔ bool
-
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value ↔ T
-
The current value of the object. When the value changes, the callbacks
registered with addListener will be invoked.
getter/setter pairoverride-getter
Methods
-
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 will throw after the object is disposed).
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
不建议直接调用。请使用 ViewModel setState()方法。
override
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
setState(
LiveDataCallBack< T> fn, {bool notify = true}) → void - 通知更新
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited