SliverListGrid class

组合SliverList、SliverGrid、SliverFixedExtentList、SliverPrototypeExtentList、SliverMasonryGrid、SliverAlignedGrid

Inheritance
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 PlaceholderChild()})
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 PlaceholderChild()})
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 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}) → 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