SliverPersistentHeader class

A sliver whose size varies when the sliver is scrolled to the edge of the viewport opposite the sliver's GrowthDirection.

In the normal case of a CustomScrollView with no centered sliver, this sliver will vary its size when scrolled to the leading edge of the viewport.

This is the layout primitive that SliverAppBar uses for its shrinking/growing effect.

To learn more about slivers, see CustomScrollView.slivers.

Inheritance

Constructors

SliverPersistentHeader({Key? key, required SliverPersistentHeaderDelegate delegate, bool pinned = false, bool floating = false}): Creates a sliver that varies its size when it is scrolled to the start of a viewport.
const

delegate → SliverPersistentHeaderDelegate: Configuration for the sliver's layout.
final
floating → bool: Whether the header should immediately grow again if the user reverses scroll direction.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
pinned → bool: Whether to stick the header to the start of the viewport once it has reached its minimum size.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

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.
override
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