SliverPersistentHeader class

A sliver whose size varies when the sliver is scrolled to the leading edge of the viewport.

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

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

Properties

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
pinned bool
Whether to stick the header to the start of the viewport once it has reached its minimum size. [...]
final
hashCode int
The hash code for this object. [...]
read-only, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
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. [...]
@protected, inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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 toStringDeep. [...]
inherited
toString({DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a string representation of this object.
inherited
toStringDeep({String prefixLineOne: '', String prefixOtherLines, DiagnosticLevel minLevel: DiagnosticLevel.debug }) 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 ==(dynamic other) bool
The equality operator. [...]
inherited