SliverListGrid class
组合SliverList、SliverGrid、SliverFixedExtentList、SliverPrototypeExtentList、SliverMasonryGrid、SliverAlignedGrid
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SliverListGrid
- Available Extensions
Constructors
- SliverListGrid.builder({Key? key, required IndexedWidgetBuilder? itemBuilder, IndexedWidgetBuilder? separatorBuilder, int? itemCount, GridStyle gridStyle = GridStyle.none, int crossAxisCount = 1, double? maxCrossAxisExtent, double mainAxisSpacing = 0, double crossAxisSpacing = 0, double childAspectRatio = 1, double? mainAxisExtent, ChildIndexGetter? findChildIndexCallback, SemanticIndexCallback semanticIndexCallback = kDefaultSemanticIndexCallback, double? itemExtent, Widget? prototypeItem, bool addAutomaticKeepALives = true, bool addRepaintBoundaries = true, bool addSemanticIndexes = true, Widget? placeholder})
-
const
-
SliverListGrid.count({Key? key, required List<
Widget> ? children, GridStyle gridStyle = GridStyle.none, int crossAxisCount = 1, double? maxCrossAxisExtent, double mainAxisSpacing = 0, double crossAxisSpacing = 0, double childAspectRatio = 1, double? mainAxisExtent, SemanticIndexCallback semanticIndexCallback = kDefaultSemanticIndexCallback, double? itemExtent, Widget? prototypeItem, bool addAutomaticKeepALives = true, bool addRepaintBoundaries = true, bool addSemanticIndexes = true, Widget? placeholder}) -
const
Properties
- addAutomaticKeepALives → bool
-
final
- addRepaintBoundaries → bool
-
final
- addSemanticIndexes → bool
-
final
- childAspectRatio → double
-
子元素在横轴长度和主轴长度的比例
gridStyle == GridStyle.none 生效
final
-
children
→ List<
Widget> ? -
少量子组件可使用 children
final
- crossAxisCount → int
-
横轴子元素的数量 自适应最大像素
use SliverGridDelegateWithFixedCrossAxisCount or SliverSimpleGridDelegateWithFixedCrossAxisCount
final
- crossAxisSpacing → double
-
横轴方向子元素的间距
final
- findChildIndexCallback → ChildIndexGetter?
-
final
- gridStyle → GridStyle
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- itemBuilder → IndexedWidgetBuilder?
-
大量子组件
final
- itemCount → int?
-
final
- itemExtent → double?
-
use SliverFixedExtentList、itemExtent 优先 prototypeItem
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- mainAxisExtent → double?
-
子元素在主轴上的长度。mainAxisExtent 优先 childAspectRatio
gridStyle == GridStyle.none 生效
final
- mainAxisSpacing → double
-
主轴方向子元素的间距
final
- maxCrossAxisExtent → double?
-
横轴元素最大像素 自适应列数
use SliverGridDelegateWithMaxCrossAxisExtent or SliverSimpleGridDelegateWithMaxCrossAxisExtent
final
- placeholder → Widget?
-
itemCount==0 || children.isisEmpty 时 占位
final
- prototypeItem → Widget?
-
use SliverPrototypeExtentList、itemExtent 优先 prototypeItem
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- semanticIndexCallback → SemanticIndexCallback
-
final
- separatorBuilder → IndexedWidgetBuilder?
-
final
Methods
-
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
DiagnosticsNodeobjects 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}) → 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