BottomAppBarModifier class
A container that is typically used with Scaffold.bottomNavigationBar, and can have a notch along the top that makes room for an overlapping FloatingActionButton.
Typically used with a Scaffold and a FloatingActionButton.
{@tool snippet}
Scaffold(
bottomNavigationBar: BottomAppBar(
color: Colors.white,
child: bottomAppBarContents,
),
floatingActionButton: const FloatingActionButton(onPressed: null),
)
{@end-tool}
{@tool dartpad} This example shows the BottomAppBar, which can be configured to have a notch using the BottomAppBar.shape property. This also includes an optional FloatingActionButton, which illustrates the FloatingActionButtonLocations in relation to the BottomAppBar.
** See code in examples/api/lib/material/bottom_app_bar/bottom_app_bar.1.dart ** {@end-tool}
See also:
- NotchedShape which calculates the notch for a notched BottomAppBar.
- FloatingActionButton which the BottomAppBar makes a notch for.
- AppBar for a toolbar that is shown at the top of the screen.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SingleChildStatelessModifier
- BottomAppBarModifier
- Available extensions
Constructors
- BottomAppBarModifier({Key? key, Widget? child, Key? modifierKey, Color? color, double? elevation, NotchedShape? shape, Clip clipBehavior = Clip.none, double notchMargin = 4.0})
-
Creates a bottom application bar.
const
Properties
- clipBehavior → Clip
-
The content will be clipped (or not) according to this option.
final
- color → Color?
-
The bottom app bar's background color.
final
- elevation → double?
-
The z-coordinate at which to place this bottom app bar relative to its
parent.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- modifierKey → Key?
-
The actual key of the widget, which Modifier wrapped
finalinherited
- notchMargin → double
-
The margin between the FloatingActionButton and the BottomAppBar's
notch.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shape → NotchedShape?
-
The notch that is made for the floating action button.
final
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
inherited
-
buildWithChild(
BuildContext context, Widget? child) → Widget -
A build method that receives an extra
childparameter.override -
createElement(
) → SingleChildStatelessElement -
Create a SingleChildStatelessElement
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
-
modified(
) → Modifier -
Available on Widget, provided by the ModifierTransformer extension
Transform normal widget to Modifier -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited