LayoutOnCreated class

组件首次渲染完成 LayoutOnCreated(onCreated: (value){ print('----LayoutCreated:${value.rect}'); }, child: Text("计数：${count}") )

参考：https://book.flutterchina.club/chapter4/layoutbuilder.html#_4-8-2-afterlayout

Inheritance
Available extensions

Constructors

LayoutOnCreated({Key? key, required ValueSetter<RenderLayoutOnCreated> onRendered, Widget? child})
const

Properties

child → Widget?
The widget below this widget in the tree.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onRendered → ValueSetter<RenderLayoutOnCreated>
onCreated 组件布局完成
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

absorbPointer({Key? key, bool absorbing = true}) → AbsorbPointer

Available on Widget, provided by the WidgetChainExt extension

用AbsorbPointer包裹当前组件
align({AlignmentGeometry alignment = Alignment.center, Key? key, double? widthFactor, double? heightFactor}) → Align

Available on Widget, provided by the WidgetChainExt extension

用Align包裹当前组件
center({Key? key, AlignmentGeometry alignment = Alignment.center, double? widthFactor, double? heightFactor}) → Align

Available on Widget, provided by the WidgetChainExt extension

用Center包裹当前组件
click(GestureTapCallback? onTap) → Widget

Available on Widget, provided by the WidgetChainExt extension

有点击效果的点击事件
clipOval({Key? key, Clip clipBehavior = Clip.antiAlias, CustomClipper<Rect>? clipper}) → ClipOval

Available on Widget, provided by the WidgetChainExt extension

clipPath({Key? key, Clip clipBehavior = Clip.antiAlias, CustomClipper<Path>? clipper}) → ClipPath

Available on Widget, provided by the WidgetChainExt extension

clipRect({Key? key, Clip clipBehavior = Clip.antiAlias, CustomClipper<Rect>? clipper}) → ClipRect

Available on Widget, provided by the WidgetChainExt extension

clipRRect({Key? key, BorderRadiusGeometry borderRadius = BorderRadius.zero, Clip clipBehavior = Clip.antiAlias, CustomClipper<RRect>? clipper}) → ClipRRect

Available on Widget, provided by the WidgetChainExt extension

coloredBox(Color color, {Key? key}) → ColoredBox

Available on Widget, provided by the WidgetChainExt extension

用ColoredBox包裹当前组件
constrainedBox(BoxConstraints constraints, {Key? key}) → ConstrainedBox

Available on Widget, provided by the WidgetChainExt extension

用ConstrainedBox包裹当前组件
container({Key? key, AlignmentGeometry? alignment, EdgeInsetsGeometry? padding, Color? color, Decoration? decoration, Decoration? foregroundDecoration, double? width, double? height, BoxConstraints? constraints, EdgeInsetsGeometry? margin, Matrix4? transform, AlignmentGeometry? transformAlignment, Clip clipBehavior = Clip.none}) → Container

Available on Widget, provided by the WidgetChainExt extension

用Container包裹当前组件
createElement() → SingleChildRenderObjectElement
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
createRenderObject(BuildContext context) → RenderObject
Creates an instance of the RenderObject class that this RenderObjectWidget represents, using the configuration described by this RenderObjectWidget.
override
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
decoratedBox(Decoration decoration, {Key? key, DecorationPosition position = DecorationPosition.background}) → DecoratedBox

Available on Widget, provided by the WidgetChainExt extension

用DecoratedBox包裹当前组件
didUnmountRenderObject(covariant RenderObject renderObject) → void
This method is called when a RenderObject that was previously associated with this widget is removed from the render tree. The provided RenderObject will be of the same type as the one created by this widget's createRenderObject method.
inherited
enfold(Widget builder(Widget child)) → Widget

Available on Widget, provided by the WidgetChainExt extension

包裹当前组件
expanded(int flex, {Key? key}) → Expanded

Available on Widget, provided by the WidgetChainExt extension

用Expanded包裹当前组件
gestureDetector({Key? key, GestureTapDownCallback? onTapDown, GestureTapUpCallback? onTapUp, GestureTapCallback? onTap, GestureTapCancelCallback? onTapCancel, GestureTapCallback? onSecondaryTap, GestureTapDownCallback? onSecondaryTapDown, GestureTapUpCallback? onSecondaryTapUp, GestureTapCancelCallback? onSecondaryTapCancel, GestureTapDownCallback? onTertiaryTapDown, GestureTapUpCallback? onTertiaryTapUp, GestureTapCancelCallback? onTertiaryTapCancel, GestureTapDownCallback? onDoubleTapDown, GestureTapCallback? onDoubleTap, GestureTapCancelCallback? onDoubleTapCancel, GestureLongPressDownCallback? onLongPressDown, GestureLongPressCancelCallback? onLongPressCancel, GestureLongPressCallback? onLongPress, GestureLongPressStartCallback? onLongPressStart, GestureLongPressMoveUpdateCallback? onLongPressMoveUpdate, GestureLongPressUpCallback? onLongPressUp, GestureLongPressEndCallback? onLongPressEnd, GestureLongPressDownCallback? onSecondaryLongPressDown, GestureLongPressCancelCallback? onSecondaryLongPressCancel, GestureLongPressCallback? onSecondaryLongPress, GestureLongPressStartCallback? onSecondaryLongPressStart, GestureLongPressMoveUpdateCallback? onSecondaryLongPressMoveUpdate, GestureLongPressUpCallback? onSecondaryLongPressUp, GestureLongPressEndCallback? onSecondaryLongPressEnd, GestureLongPressDownCallback? onTertiaryLongPressDown, GestureLongPressCancelCallback? onTertiaryLongPressCancel, GestureLongPressCallback? onTertiaryLongPress, GestureLongPressStartCallback? onTertiaryLongPressStart, GestureLongPressMoveUpdateCallback? onTertiaryLongPressMoveUpdate, GestureLongPressUpCallback? onTertiaryLongPressUp, GestureLongPressEndCallback? onTertiaryLongPressEnd, GestureDragDownCallback? onVerticalDragDown, GestureDragStartCallback? onVerticalDragStart, GestureDragUpdateCallback? onVerticalDragUpdate, GestureDragEndCallback? onVerticalDragEnd, GestureDragCancelCallback? onVerticalDragCancel, GestureDragDownCallback? onHorizontalDragDown, GestureDragStartCallback? onHorizontalDragStart, GestureDragUpdateCallback? onHorizontalDragUpdate, GestureDragEndCallback? onHorizontalDragEnd, GestureDragCancelCallback? onHorizontalDragCancel, GestureForcePressStartCallback? onForcePressStart, GestureForcePressPeakCallback? onForcePressPeak, GestureForcePressUpdateCallback? onForcePressUpdate, GestureForcePressEndCallback? onForcePressEnd, GestureDragDownCallback? onPanDown, GestureDragStartCallback? onPanStart, GestureDragUpdateCallback? onPanUpdate, GestureDragEndCallback? onPanEnd, GestureDragCancelCallback? onPanCancel, GestureScaleStartCallback? onScaleStart, GestureScaleUpdateCallback? onScaleUpdate, GestureScaleEndCallback? onScaleEnd, HitTestBehavior? behavior, bool excludeFromSemantics = false, DragStartBehavior dragStartBehavior = DragStartBehavior.start, bool trackpadScrollCausesScale = false, Offset trackpadScrollToScaleFactor = kDefaultTrackpadScrollToScaleFactor, Set<PointerDeviceKind>? supportedDevices}) → GestureDetector

Available on Widget, provided by the WidgetChainExt extension

用GestureDetector包裹当前组件
ignorePointer({Key? key, bool ignoring = true}) → IgnorePointer

Available on Widget, provided by the WidgetChainExt extension

用IgnorePointer包裹当前组件
inkWell({Key? key, GestureTapCallback? onTap, GestureTapDownCallback? onTapDown, GestureTapUpCallback? onTapUp, GestureTapCallback? onTapCancel, GestureTapCallback? onDoubleTap, GestureLongPressCallback? onLongPress, GestureTapCallback? onSecondaryTap, GestureTapUpCallback? onSecondaryTapUp, GestureTapDownCallback? onSecondaryTapDown, GestureTapCallback? onSecondaryTapCancel, ValueChanged<bool>? onHighlightChanged, ValueChanged<bool>? onHover, MouseCursor? mouseCursor, bool containedInkWell = false, BoxShape highlightShape = BoxShape.circle, double? radius, BorderRadius? borderRadius, ShapeBorder? customBorder, Color? focusColor, Color? hoverColor, Color? highlightColor, MaterialStateProperty<Color?>? overlayColor, Color? splashColor, InteractiveInkFeatureFactory? splashFactory, bool enableFeedback = true, bool excludeFromSemantics = false, FocusNode? focusNode, bool canRequestFocus = true, ValueChanged<bool>? onFocusChange, bool autofocus = false, MaterialStatesController? statesController, Duration? hoverDuration}) → InkWell

Available on Widget, provided by the WidgetChainExt extension

用InkWell包裹当前组件
margin(EdgeInsetsGeometry margin, {Key? key}) → Padding

Available on Widget, provided by the WidgetChainExt extension

用Padding包裹当前组件
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
offstage(bool offstage, {Key? key}) → Offstage

Available on Widget, provided by the WidgetChainExt extension

用Offstage包裹当前组件
opacity(double opacity, {Key? key, bool alwaysIncludeSemantics = false}) → Opacity

Available on Widget, provided by the WidgetChainExt extension

用Opacity包裹当前组件
padding(EdgeInsetsGeometry padding, {Key? key}) → Padding

Available on Widget, provided by the WidgetChainExt extension

用Padding包裹当前组件
positioned({Key? key, double? left, double? top, double? right, double? bottom, double? width, double? height}) → Positioned

Available on Widget, provided by the WidgetChainExt extension

用Positioned包裹当前组件
repaintBoundary({Key? key}) → RepaintBoundary

Available on Widget, provided by the WidgetChainExt extension

safeArea({Key? key, bool left = true, bool top = true, bool right = true, bool bottom = true, EdgeInsets minimum = EdgeInsets.zero, bool maintainBottomViewPadding = false}) → SafeArea

Available on Widget, provided by the WidgetChainExt extension

singleChildScrollView({Key? key, Axis scrollDirection = Axis.vertical, bool reverse = false, EdgeInsetsGeometry? padding, bool? primary, ScrollPhysics? physics, ScrollController? controller, dynamic child, DragStartBehavior dragStartBehavior = DragStartBehavior.start, Clip clipBehavior = Clip.hardEdge, String? restorationId, ScrollViewKeyboardDismissBehavior keyboardDismissBehavior = ScrollViewKeyboardDismissBehavior.manual}) → SingleChildScrollView

Available on Widget, provided by the WidgetChainExt extension

sizedBox({Key? key, double? width, double? height}) → SizedBox

Available on Widget, provided by the WidgetChainExt extension

tap(GestureTapCallback? onTap) → Widget

Available on Widget, provided by the WidgetChainExt extension

点击事件
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, int wrapWidth = 65}) → 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 RenderLayoutOnCreated 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.
override
visibility(bool visible, {Key? key, Widget replacement = const SizedBox.shrink(), bool maintainState = false, bool maintainAnimation = false, bool maintainSize = false, bool maintainSemantics = false, bool maintainInteractivity = false}) → Visibility

Available on Widget, provided by the WidgetChainExt extension

用Visibility包裹当前组件
widgetSpan({PlaceholderAlignment alignment = PlaceholderAlignment.bottom, TextBaseline? baseline, TextStyle? style}) → WidgetSpan

Available on Widget, provided by the WidgetChainExt extension

Operators

operator ==(Object other) → bool
The equality operator.
inherited