ReactiveProvider<T extends ChangeNotifier> class

A widget that provides a ReactiveNotifier or ChangeNotifier to its descendants.

Uses InheritedNotifier under the hood for efficient rebuilds. Descendants can access the notifier using ReactiveProvider.of or the BuildContext extension context.reactive.

Basic Usage

// Provide at the top of your widget tree
ReactiveProvider<ReactiveNotifier<int>>(
  notifier: counter,
  child: const MyApp(),
)

// Access anywhere in the subtree
final counter = ReactiveProvider.of<ReactiveNotifier<int>>(context);
// or
final counter = context.reactive<ReactiveNotifier<int>>();

Disable Auto Dispose

By default, notifiers are automatically disposed when the provider is removed. Set autoDispose: false if you manage the notifier lifecycle elsewhere:

ReactiveProvider<ReactiveNotifier<int>>(
  notifier: counter,
  autoDispose: false,  // Don't dispose, managed elsewhere
  child: const MyApp(),
)

Multiple Providers

ReactiveProvider<ReactiveNotifier<User>>(
  notifier: userNotifier,
  child: ReactiveProvider<ReactiveNotifier<Settings>>(
    notifier: settingsNotifier,
    child: const MyApp(),
  ),
)

Constructors

ReactiveProvider({Key? key, required T notifier, required Widget child, bool autoDispose = true}): Creates a ReactiveProvider that provides notifier to descendants.
const

Properties

alignBottomCenter → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the bottom center of its parent.
no setter
alignBottomEnd → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the bottom end corner of its parent.
no setter
alignBottomStart → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the bottom start corner of its parent.
no setter
alignCenter → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the center of its parent.
no setter
alignEndCenter → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the start center of its parent.
no setter
alignStartCenter → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the start center of its parent.
no setter
alignTopCenter → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the top center of its parent.
no setter
alignTopEnd → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the top end corner of its parent.
no setter
alignTopStart → Widget: Available on Widget, provided by the AlignmentExtension extension
Aligns the widget to the top start corner of its parent.
no setter
autoDispose → bool: Whether to automatically dispose the notifier when this provider is removed from the tree.
final
center → Widget: Available on Widget, provided by the CenterExtension extension
Wraps the widget with a Center widget.
no setter
child → Widget: The widget below this provider in the tree.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
ltr → Widget: Available on Widget, provided by the DirectionalityExtension extension
Wraps the current widget in a Directionality widget with TextDirection.ltr.
no setter
notifier → T: The notifier to provide to descendants.
final
rtl → Widget: Available on Widget, provided by the DirectionalityExtension extension
Wraps the current widget in a Directionality widget with TextDirection.rtl.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

alignedBox({double? width, double? height, AlignmentDirectional? alignment}) → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox with specified width, height, and alignment.
animatedOpacity(bool isVisible, {Duration duration = const Duration(milliseconds: 300)}) → AnimatedOpacity: Available on Widget, provided by the VisibilityExtension extension
Wraps the widget with an AnimatedOpacity widget to animate its visibility.
box({double? width, double? height}) → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox with both width and height.
createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<ReactiveProvider<T>>: Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
expandBox() → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox that fills the available space in both dimensions.
expanded({int flex = 1}) → Widget: Available on Widget, provided by the FlexExtensions extension
Wraps the current widget with an Expanded widget, allowing it to expand and fill available space in a flex container (e.g., Row, Column).
flexible({int flex = 1, FlexFit fit = FlexFit.loose}) → Widget: Available on Widget, provided by the FlexExtensions extension
Wraps the current widget with a Flexible widget, allowing it to take flexible space within a flex container, but with more control over its layout behavior.
flexibleBox({required double width, double? height}) → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox with a flexible width and height.
height(double height) → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox with a specified height.
hide(bool isHidden) → Widget: Available on Widget, provided by the VisibilityExtension extension
Conditionally hides the widget by replacing it with an empty widget (SizedBox.shrink).
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
paddedBox({double? width, double? height, EdgeInsets? padding}) → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox with padding around the child widget.
paddingAll(double value) → Widget: Available on Widget, provided by the PaddingExtension extension
Wraps the widget with a Padding widget applying uniform padding on all sides.
paddingOnly({double top = 0, double bottom = 0, double start = 0, double end = 0}) → Widget: Available on Widget, provided by the PaddingExtension extension
Wraps the widget with a Padding widget using the specified EdgeInsets.
paddingSymmetric({double vertical = 0, double horizontal = 0}) → Widget: Available on Widget, provided by the PaddingExtension extension
Wraps the widget with a Padding widget applying symmetric padding.
positioned({double? top, double? bottom, double? start, double? end, double? width, double? height}) → Widget: Available on Widget, provided by the PositionedExtension extension
Wraps the widget with a PositionedDirectional widget.
positionedDirectional({required TextDirection textDirection, double? top, double? bottom, double? start, double? end, double? width, double? height}) → Widget: Available on Widget, provided by the PositionedExtension extension
Wraps the widget with a Positioned.directional widget.
positionedFill({double? top, double? bottom, double? left, double? right}) → Widget: Available on Widget, provided by the PositionedExtension extension
Wraps the widget with a Positioned.fill widget.
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode: Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String: A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String: Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String: Returns a one-line detailed description of the object.
inherited
toStringShort() → String: A short, textual description of this widget.
inherited
visible(bool isVisible) → Widget: Available on Widget, provided by the VisibilityExtension extension
Wraps the widget with a Visibility widget to conditionally show or hide it.
width(double width) → Widget: Available on Widget, provided by the SizedBoxExtension extension
Creates a SizedBox with a specified width.

Operators

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

Static Methods

maybeOf<T extends ChangeNotifier>(BuildContext context) → T?: Obtains the nearest ReactiveProvider of the given type T and returns its notifier, or null if not found.
of<T extends ChangeNotifier>(BuildContext context) → T: Obtains the nearest ReactiveProvider of the given type T and returns its notifier.