AppBar class
The widget configures dynamic appbar behavior that interacts with Scrollable widget.
Used with AppBarConnection.
- Inheritance
Constructors
- AppBar({Key? key, required AppBarBehavior behavior, required Widget body, Alignment alignment = Alignment.bottomCenter, Alignment bouncingAlignment = Alignment.bottomCenter, double initialOffset = 0, double minExtent = 0, double? maxExtent})
- AppBar.builder({Key? key, required AppBarBehavior behavior, required AppBarBuilder builder, Alignment alignment = Alignment.bottomCenter, Alignment bouncingAlignment = Alignment.bottomCenter, double initialOffset = 0, double minExtent = 0, double? maxExtent})
Properties
- alignment → Alignment
-
Alignment of the appbar relative to its container.
final
- behavior → AppBarBehavior
-
The instance that defines the behavior of the appbar that is
including how it consumes scroll offsets and aligns appbar.
final
- bouncingAlignment → Alignment
-
Alignment of the appbar applied during overscroll
when bouncing.
final
- builder → AppBarBuilder
-
The function that creates a widget for the appbar.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- initialOffset → double
-
The value that defines initial normalized appbar offset.
Therefore, this value must be defined from 0 to 1.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- maxExtent → double?
-
The maximum height the AppBar can expand to.
final
- minExtent → double
-
The minimum height the AppBar can shrink to.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< AppBar> -
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
-
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