# ListController class Null safety

Inheritance
  - Object
  - GetLifeCycle
  - DisposableInterface
  - GetxController
  - ListController

## Constructors

ListController()

## Properties

controller → AutoScrollController
  final
hashCode → int
  The hash code for this object. [...]
  read-only, inherited
hasListeners → bool
  read-only, inherited
initialized → bool
  Checks whether the controller has already been initialized.
  read-only, inherited
initialOpeningSequenceDelay ↔ int
  The delay in milliseconds (when the entire accordion loads) before the individual sections open one after another. Helpful if you go to a new page in your app and then (after the delay) have a nice opening sequence.
  read / write
isClosed → bool
  Checks whether the controller has already been closed.
  read-only, inherited
listeners → int
  read-only, inherited
maxOpenSections ↔ int
  Maximum number of open sections at any given time. Opening a new section will close the "oldest" open section
  read / write
onDelete → _InternalFinalCallback<void>
  Internal callback that starts the cycle of this controller.
  final, inherited
onStart → _InternalFinalCallback<void>
  Called at the exact moment the widget is allocated in memory. It uses an internal "callable" type, to avoid any @overrides in subclases. This method should be internal and is required to define the lifetime cycle of the subclass.
  final, inherited
openSections → RxList<UniqueKey>
  final
runtimeType → Type
  A representation of the runtime type of the object.
  read-only, inherited

## Methods

$configureLifeCycle() → void
  inherited
addListener(GetStateUpdate listener) → Disposer
  Register a closure to be called when the object notifies its listeners.
  inherited
addListenerId(Object? key, GetStateUpdate listener) → Disposer
  inherited
dispose() → void
  @mustCallSuper, inherited
disposeId(Object id) → void
  To dispose an `id` from future updates(), this ids are registered by GetBuilder() or similar, so is a way to unlink the state change with the Widget from the Controller.
  inherited
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a non-existent method or property is accessed. [...]
  inherited
notifyChildrens() → void
  @protected, inherited
onClose() → void
  Called before onDelete method. onClose might be used to dispose resources used by the controller. Like closing events, or streams before the controller is destroyed. Or dispose objects that can potentially create some memory leaks, like TextEditingControllers, AnimationControllers. Might be useful as well to persist some data on disk.
  override
onInit() → void
  Called immediately after the widget is allocated in memory. You might use this to initialize something for the controller.
  @mustCallSuper, inherited
onReady() → void
  Called 1 frame after onInit(). It is the perfect place to enter navigation events, like snackbar, dialogs, or a new route, or async request.
  inherited
refresh() → void
  @protected, inherited
refreshGroup(Object id) → void
  @protected, inherited
removeListener(VoidCallback listener) → void
  Remove a previously registered closure from the list of closures that the object notifies.
  inherited
removeListenerId(Object id, VoidCallback listener) → void
  inherited
toString() → String
  A string representation of this object. [...]
  inherited
update([List<Object>? ids, bool condition = true]) → void
  Rebuilds GetBuilder each time you call update(); Can take a List of `ids`, that will only update the matching `GetBuilder( id: )`, `ids` can be reused among `GetBuilders` like group tags. The update will only notify the Widgets, if `condition` is true.
  inherited
updateSections(UniqueKey key) → void

## Operators

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