SliverWaterfallFlow class

瀑布流 添加empty视图

Inheritance
Available extensions

Constructors

SliverWaterfallFlow({Key? key, IndexedWidgetBuilder? itemBuilder, int? itemCount, ChildIndexGetter? findChildIndexCallback, SemanticIndexCallback? semanticIndexCallback, bool addAutomaticKeepALives = false, bool addRepaintBoundaries = false, bool addSemanticIndexes = true, double mainAxisSpacing = 0, double crossAxisSpacing = 0, double? maxCrossAxisExtent, int? crossAxisCount, Widget placeholder = const PlaceholderChild()})
const
SliverWaterfallFlow.aligned({Key? key, IndexedWidgetBuilder? itemBuilder, int? itemCount, ChildIndexGetter? findChildIndexCallback, SemanticIndexCallback? semanticIndexCallback, bool addAutomaticKeepALives = false, bool addRepaintBoundaries = false, bool addSemanticIndexes = true, double mainAxisSpacing = 0, double? maxCrossAxisExtent, double crossAxisSpacing = 0, int? crossAxisCount, Widget placeholder = const PlaceholderChild()})
const
SliverWaterfallFlow.count({Key? key, List<Widget>? children, SemanticIndexCallback? semanticIndexCallback, bool addAutomaticKeepALives = false, bool addRepaintBoundaries = false, bool addSemanticIndexes = true, double mainAxisSpacing = 0, double crossAxisSpacing = 0, double? maxCrossAxisExtent, int? crossAxisCount, Widget placeholder = const PlaceholderChild()})
const

Properties

addAutomaticKeepALives → bool
final
addRepaintBoundaries → bool
final
addSemanticIndexes → bool
final
aligned → bool
use SliverAlignedGrid
final
children → List<Widget>?
少量子组件可使用 children
final
crossAxisCount → int?
横轴的等长度元素数量
final
crossAxisSpacing → double
横轴元素之间的距离
final
findChildIndexCallback → ChildIndexGetter?
final
hashCode → int
The hash code for this object.
no setterinherited
itemBuilder → IndexedWidgetBuilder?
渲染子组件
final
itemCount → int?
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
mainAxisSpacing → double
主轴元素之间的距离
final
maxCrossAxisExtent → double?
横轴元素单个最大距离
final
placeholder → Widget
itemCount==0 || children.isisEmpty 时 显示的组件
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticIndexCallback → SemanticIndexCallback?
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