NotificationCenter class

In-app notification center with push-style UI.

NotificationCenter.of(context).show(
  Notification(
    title: 'New message',
    body: 'You have a new message from John',
    type: NotificationType.info,
  ),
)
Inheritance
Available extensions

Constructors

NotificationCenter({Key? key, required Widget child, int maxVisible = 5, NotificationPosition position = NotificationPosition.topRight, Duration? autoDismissDuration = const Duration(seconds: 4), void onNotificationTap(Notification notification)?})
const

Properties

autoDismissDuration → Duration?
Auto-dismiss duration (null to disable).
final
centered → Widget

Available on Widget, provided by the WidgetX extension

Wraps the widget in a Center.
no setter
child → Widget
The child widget 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
maxVisible → int
Maximum visible notifications.
final
onNotificationTap → void Function(Notification notification)?
Callback when a notification is tapped.
final
position → NotificationPosition
Position of the notification overlay.
final
repaint → Widget

Available on Widget, provided by the WidgetX extension

Wraps in RepaintBoundary to isolate repaints.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

animatedSwitcher({Duration duration = const Duration(milliseconds: 300), AnimatedSwitcherTransitionBuilder transitionBuilder = _defaultAnimatedSwitcherTransition, AnimatedSwitcherLayoutBuilder layoutBuilder = AnimatedSwitcher.defaultLayoutBuilder}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps in an AnimatedSwitcher with duration and default fade.
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<NotificationCenter>
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
expanded({int flex = 1}) → Widget

Available on Widget, provided by the WidgetX extension

Expands the widget inside a Flex parent.
fadeIn({double opacity = 1, Duration duration = const Duration(milliseconds: 300), Curve curve = Curves.easeIn}) → Widget

Available on Widget, provided by the WidgetAnimateX extension

Wraps in an AnimatedOpacity.
flexible({int flex = 1, FlexFit fit = FlexFit.loose}) → Widget

Available on Widget, provided by the WidgetX extension

Applies flexible sizing.
keyed(Object key) → Widget

Available on Widget, provided by the WidgetX extension

Wraps the widget in a KeyedSubtree with key.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onTap(VoidCallback onTap, {HitTestBehavior behavior = HitTestBehavior.opaque}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps the widget in GestureDetector with onTap.
pad({double horizontal = 0, double vertical = 0}) → Widget

Available on Widget, provided by the WidgetX extension

Applies symmetric padding.
padded([double padding = AppSpacing.lg]) → Widget

Available on Widget, provided by the WidgetX extension

Applies uniform padding.
scaleOnTap({double scale = 0.95, required VoidCallback onTap, Duration duration = const Duration(milliseconds: 150)}) → Widget

Available on Widget, provided by the WidgetAnimateX extension

Wraps in an AnimatedScale.
semantics({required String label, bool button = false}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps in a Semantics node with label.
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 condition = true}) → Widget

Available on Widget, provided by the WidgetX extension

Hides the widget entirely when condition is false.
withPadding(EdgeInsetsGeometry padding) → Widget

Available on Widget, provided by the WidgetX extension

Applies padding only.

Operators

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

Static Methods

of(BuildContext context) → NotificationCenterState
Access the nearest NotificationCenter state.