AppBar class

A modern app bar with title, subtitle, actions and optional scroll effects.

Inheritance
Implemented types
Available extensions

Constructors

AppBar({Key? key, dynamic title, dynamic subtitle, List<Widget>? actions, Widget? leading, bool automaticallyImplyLeading = true, bool centerTitle = false, Color? backgroundColor, Color? foregroundColor, double elevation = 0, bool pinned = true, double titleSpacing = AppSpacing.sm, double? toolbarHeight, PreferredSizeWidget? bottom, VoidCallback? onBack, double scrolledUnderElevation = 2, TextStyle? titleStyle, IconData? backIcon})
const

Properties

actions → List<Widget>?
Trailing action widgets.
final
automaticallyImplyLeading → bool
Whether to add the default back button.
final
backgroundColor → Color?
Background color.
final
backIcon → IconData?
Back button icon.
final
bottom → PreferredSizeWidget?
Bottom widget (e.g. tabs).
final
centered → Widget

Available on Widget, provided by the WidgetX extension

Wraps the widget in a Center.
no setter
centerTitle → bool
Whether to center the title.
final
elevation → double
Elevation.
final
foregroundColor → Color?
Foreground (icon/text) color.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
leading → Widget?
Custom leading widget.
final
onBack → VoidCallback?
Custom back callback.
final
pinned → bool
Whether the app bar is pinned during scroll.
final
preferredSize → Size
The size this widget would prefer if it were otherwise unconstrained.
no setteroverride
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
scrolledUnderElevation → double
Scrolled under elevation.
final
subtitle → dynamic
App bar subtitle (accepts String or Widget).
final
title → dynamic
App bar title (accepts String or Widget).
final
titleSpacing → double
Title horizontal spacing.
final
titleStyle → TextStyle?
Title text style.
final
toolbarHeight → double?
Toolbar height.
final

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.
build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
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