SliverToBoxAdapter class
A sliver that contains a single box widget.
Slivers are special-purpose widgets that can be combined using a CustomScrollView to create custom scroll effects. A SliverToBoxAdapter is a basic sliver that creates a bridge back to one of the usual box-based widgets.
Rather than using multiple SliverToBoxAdapter widgets to display multiple box widgets in a CustomScrollView, consider using SliverList, SliverFixedExtentList, SliverPrototypeExtentList, or SliverGrid, which are more efficient because they instantiate only those children that are actually visible through the scroll view's viewport.
See also:
- CustomScrollView, which displays a scrollable list of slivers.
- SliverList, which displays multiple box widgets in a linear array.
- SliverFixedExtentList, which displays multiple box widgets with the same main-axis extent in a linear array.
- SliverPrototypeExtentList, which displays multiple box widgets with the same main-axis extent as a prototype item, in a linear array.
- SliverGrid, which displays multiple box widgets in arbitrary positions.
- Inheritance
- Object
- Diagnosticable
- DiagnosticableTree
- Widget
- RenderObjectWidget
- SingleChildRenderObjectWidget
- SliverToBoxAdapter
Constructors
- SliverToBoxAdapter({Key key, Widget child })
-
Creates a sliver that contains a single box widget.
const
Properties
- child → Widget
-
The widget below this widget in the tree. [...]
final, inherited
- 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
-
createRenderObject(
BuildContext context) → RenderSliverToBoxAdapter -
Creates an instance of the RenderObject class that this
RenderObjectWidget represents, using the configuration described by this
RenderObjectWidget. [...]
override
-
createElement(
) → SingleChildRenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children. [...]
@protected, inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node. [...]
inherited
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
A render object previously associated with this widget has been removed
from the tree. The given RenderObject will be of the same type as
returned by this object's createRenderObject.
@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
-
updateRenderObject(
BuildContext context, covariant RenderObject renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the
given RenderObject, which will be of the same type as returned by this
object's createRenderObject. [...]
@protected, inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited