Results for “Listener”

plain Dart class from foundation: subclass it, mutate fields, call notifyListeners(). ListenableBuilder, ValueListenableBuilder and InheritedNotifier turn those notifications into targeted rebuilds. Packages (provider, riverpod, bloc, etc.) reduce boilerplate

these animations in their build functions directly by reading their current value and listening to their state changes or they can use the animations as the basis

TextField or a TextFormField . To be notified when the text changes, listen to the controller using

Instructions on how to manage state with ChangeNotifiers. Learn to use ListenableBuilder to automatically rebuild UI and handle all possible states with switch expressions. Introduction The view layer

How to perform animations in Flutter. Well-designed animations make a UI

A tutorial showing how to build explicit animations in Flutter. How to

widget that calls callbacks in response to common pointer events. widgets.Listener Listener Listener class widgets

Creates a widget that forwards point events to callbacks. widgets.Listener.Listener.new Listener new Listener.new constructor widgets

object that maintains a list of listeners. foundation.Listenable Listenable Listenable class foundation

purpose widget for building a widget subtree when a Listenable changes. widgets.ListenableBuilder ListenableBuilder Listenable Builder class widgets

when any of the given Listenables themselves trigger. foundation.Listenable.Listenable.merge Listenable merge Listenable.merge constructor foundation

Creates a builder that responds to changes in listenable. widgets.ListenableBuilder.ListenableBuilder.new ListenableBuilder new Listenable Builder.new constructor widgets

listener that can be used to listen to changes in the application lifecycle. widgets.AppLifecycleListener AppLifecycleListener App Lifecycle Listener class widgets

that they can be used in const expressions. foundation.Listenable.Listenable.new Listenable new Listenable.new constructor foundation

Mediates disputes over which listener should handle pointer signal events when multiple listeners wish to handle those events. gestures.PointerSignalResolver PointerSignalResolver Pointer Signal Resolver class gestures

interface for subclasses of Listenable that expose a value. foundation.ValueListenable ValueListenable Value Listenable class foundation

widget that listens for Notifications bubbling up the tree. widgets.NotificationListener NotificationListener Notification Listener class widgets

mixin that helps listen to another object only when this object has registered listeners. animation.AnimationLazyListenerMixin AnimationLazyListenerMixin Animation Lazy Listener Mixin mixin animation

Notifies listeners when the selection under a SelectionListener has been changed. widgets.SelectionListenerNotifier SelectionListenerNotifier Selection Listener Notifier class widgets

base class for creating a RestorableProperty that stores and restores a Listenable. widgets.RestorableListenable RestorableListenable Restorable Listenable class widgets

helper widget for making sure that listeners on an action are removed properly. widgets.ActionListener ActionListener Action Listener class widgets

SelectionContainer that allows the user to access the SelectionDetails and listen to selection changes for the child subtree it wraps under a SelectionArea or SelectableRegion. widgets.SelectionListener SelectionListener

listener of ObjectEvent. foundation.ObjectEventListener ObjectEventListener Object Event Listener typedef foundation

Allows listening to and preventing pops. widgets.PopEntry PopEntry Pop Entry class widgets

Listenable which can be manually triggered. widgets.KeepAliveHandle KeepAliveHandle Keep Alive Handle class widgets

Signature for Notification listeners. widgets.NotificationListenerCallback NotificationListenerCallback Notification Listener Callback typedef widgets

Notifies its listeners when a descendant scrolls. widgets.ScrollNotificationObserver ScrollNotificationObserver Scroll Notification Observer class widgets

interface for listening to raw key events. services.RawKeyboard RawKeyboard Raw Keyboard class services

Signature for listening to PointerUpEvent events. rendering.PointerUpEventListener PointerUpEventListener Pointer Up Event Listener typedef rendering

Signature for listening to PointerDownEvent events. rendering.PointerDownEventListener PointerDownEventListener Pointer Down Event Listener typedef rendering

Signature for listening to ImageChunkEvent events. painting.ImageChunkListener ImageChunkListener Image Chunk Listener typedef painting

Creates a widget that listens for notifications. widgets.NotificationListener.NotificationListener.new NotificationListener new Notification Listener.new constructor widgets

widget that rebuilds when the given Listenable changes value. widgets.AnimatedWidget AnimatedWidget Animated Widget class widgets

interface for listening to object lifecycle events. foundation.FlutterMemoryAllocations FlutterMemoryAllocations Flutter Memory Allocations class foundation

Signature for listening to PointerSignalEvent events. rendering.PointerSignalEventListener PointerSignalEventListener Pointer Signal Event Listener typedef rendering

Signature for listening to PointerHoverEvent events. services.PointerHoverEventListener PointerHoverEventListener Pointer Hover Event Listener typedef services

Signature for listeners attached using Animation.addStatusListener. animation.AnimationStatusListener AnimationStatusListener Animation Status Listener typedef animation

Signature for listening to PointerExitEvent events. services.PointerExitEventListener PointerExitEventListener Pointer Exit Event Listener typedef services

Signature for listening to PointerEnterEvent events. services.PointerEnterEventListener PointerEnterEventListener Pointer Enter Event Listener typedef services

Signature for listening to PointerCancelEvent events. rendering.PointerCancelEventListener PointerCancelEventListener Pointer Cancel Event Listener typedef rendering

Signature for listening to PointerMoveEvent events. rendering.PointerMoveEventListener PointerMoveEventListener Pointer Move Event Listener typedef rendering

Manages a set of WidgetStates and notifies listeners of changes. widgets.WidgetStatesController WidgetStatesController Widget States Controller class widgets

inherited widget for a Listenable notifier, which updates its dependencies when the notifier is triggered. widgets.InheritedNotifier InheritedNotifier Inherited Notifier class widgets

listener list state for a ScrollNotificationObserver returned by ScrollNotificationObserver.of. widgets.ScrollNotificationObserverState ScrollNotificationObserverState Scroll Notification Observer State class widgets

Signature for listening to PointerPanZoomStartEvent events. rendering.PointerPanZoomStartEventListener PointerPanZoomStartEventListener Pointer Pan Zoom Start Event Listener typedef rendering

Signature for listening to PointerPanZoomEndEvent events. rendering.PointerPanZoomEndEventListener PointerPanZoomEndEventListener Pointer Pan Zoom End Event Listener typedef rendering

Signature for listening to PointerPanZoomUpdateEvent events. rendering.PointerPanZoomUpdateEventListener PointerPanZoomUpdateEventListener Pointer Pan Zoom Update Event Listener typedef rendering

Owns SemanticsNode objects and notifies listeners of changes to the render tree semantics. semantics.SemanticsOwner SemanticsOwner Semantics Owner class semantics

Listens for the specified gestures from the semantics server (e.g. an accessibility tool). rendering.RenderSemanticsGestureHandler RenderSemanticsGestureHandler Render Semantics Gesture Handler class rendering

Notifies its listeners when the selection under a SelectableRegion or SelectionArea is being changed or finalized. widgets.SelectableRegionSelectionStatusScope SelectableRegionSelectionStatusScope Selectable Region Selection Status Scope class widgets

handle that keeps an ImageStreamCompleter alive even if it has lost its last listener. painting.ImageStreamCompleterHandle ImageStreamCompleterHandle Image Stream Completer Handle class painting

mixin that implements the addListener/removeListener protocol and notifies all the registered listeners when notifyListeners is called. animation.AnimationLocalListenersMixin AnimationLocalListenersMixin Animation Local Listeners Mixin mixin animation

mixin that implements the addStatusListener/removeStatusListener protocol and notifies all the registered listeners when notifyStatusListeners is called. animation.AnimationLocalStatusListenersMixin AnimationLocalStatusListenersMixin Animation Local Status Listeners Mixin mixin animation

automatically processes trackpad gesture events and triggers callbacks if recognized. #### Using `GestureRecognizer` and `Listener` Ensure that `onPointerPanZoomSta

Remove unnecessary `String.valueOf` in `‎ListenableEditingState.java‎` (Android, by @AbdeMohlbi). String.valueOf ListenableEditingState.java

widgets/raw_menu_anchor.dart] Remove listener from isScrollingNotifier on dispose. (Framework, by @davidhicks980

Listen to text spacing overrides on the web (Framework, by @Renzo-Olivares

train hopping animation status listeners (Framework, by @ksokolovskyi

Tool ] Only listen for DebugConnectionInfo if the service protocol is supported (Tooling, by @bkonyi). DebugConnectionInfo

Ensure resize listener is not added if content sizing is not turned on (Android, by @mboetger