UButton class

Inheritance
Available extensions

Constructors

UButton({Key? key, Color? color, EdgeInsetsGeometry? margin, double? width = double.infinity, double? height = 45, bool enabled = true, bool visible = true, Widget? child, String? text, GestureTapCallback? onTap, AlignmentGeometry? alignment = Alignment.center})

Properties

alignment → AlignmentGeometry?
****** Align ****** ///
finalinherited
backgroundImage → ImageProvider<Object>?
foregroundImage > foregroundColor > backgroundImage > color
finalinherited
behavior → HitTestBehavior
HitTestBehavior.opaque 自己处理事件 HitTestBehavior.deferToChild child处理事件 HitTestBehavior.translucent 自己和child都可以接收事件
finalinherited
blendMode → BlendMode
finalinherited
borderRadius → BorderRadius?
ClipRRect剪辑半径
finalinherited
bottom → double?
finalinherited
child → Widget?
****** child、children ****** /// child < children 两个只有一个有效
finalinherited
children → List<Widget>?
finalinherited
clipBehavior → Clip?
控制剪辑方式 Clip.none没有剪辑 最快 Clip.hardEdge不抗锯齿 快 Clip.antiAlias抗锯齿 慢 Clip.antiAliasWithSaveLayer抗锯齿和saveLayer 很慢 使用到的组件Stack、ClipRRect、ClipPath、ClipRect、ClipOval、Stack、Flex、SingleChildScrollView
finalinherited
clipper → CustomClipper?
****** ClipRRect、ClipPath、ClipRect、ClipOval ****** /// RRect、Path、Rect
finalinherited
color → Color?
****** ColoredBox || DecoratedBox || CircleAvatar ****** ///
finalinherited
constraints → BoxConstraints?
****** ConstrainedBox ****** ///
finalinherited
createRectTween → CreateRectTween?
finalinherited
crossAxisAlignment → CrossAxisAlignment
finalinherited
decoration → Decoration?
****** DecoratedBox ****** ///
finalinherited
direction → Axis
finalinherited
dragStartBehavior → DragStartBehavior
GestureDetector、SingleChildScrollView 使用
finalinherited
enabled → bool
****** 点击事件相关 ****** /// enabled默认为false (enabled=false) 除onTap外GestureDetector属性无效 (enabled=true) GestureDetector属性全部有效
finalinherited
excludeFromSemantics → bool
finalinherited
expand → bool
****** SizedBox ****** ///
finalinherited
expanded → bool
expanded=true flex=1 相当于添加Expanded组件
finalinherited
filter → ImageFilter?
****** ImageFilter ****** ///
finalinherited
fit → BoxFit?
****** FittedBox ****** ///
finalinherited
flex → int?
****** Flexible ****** ///
finalinherited
flightShuttleBuilder → HeroFlightShuttleBuilder?
finalinherited
foregroundColor → Color?
finalinherited
foregroundDecoration → Decoration?
finalinherited
foregroundImage → ImageProvider<Object>?
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
height → double?
finalinherited
heightFactor → double?
finalinherited
heroTag → String?
****** Hero ****** ///
finalinherited
intrinsicHeight → bool
****** IntrinsicHeight、IntrinsicWidth ****** ///
finalinherited
intrinsicWidth → bool
finalinherited
isCircleAvatar → bool
****** CircleAvatar ****** ///
finalinherited
isClipRect → bool
finalinherited
isClipRRect → bool
finalinherited
isOval → bool
finalinherited
isScroll → bool
****** 开启滚动 ****** ///
finalinherited
isStack → bool
****** Stack ****** ///
finalinherited
isWrap → bool
****** Wrap ****** ///
finalinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
keyboardDismissBehavior → ScrollViewKeyboardDismissBehavior
finalinherited
left → double?
****** Positioned ****** ///
finalinherited
mainAxisAlignment → MainAxisAlignment
****** Flex=Column+Row ****** ///
finalinherited
mainAxisSize → MainAxisSize
finalinherited
maintainAnimation → bool
finalinherited
maintainInteractivity → bool
finalinherited
maintainSemantics → bool
finalinherited
maintainSize → bool
finalinherited
maintainState → bool
finalinherited
margin → EdgeInsetsGeometry?
****** Padding ****** ///
finalinherited
maxRadius → double?
finalinherited
minRadius → double?
finalinherited
noScrollBehavior → bool
移出头部和底部蓝色阴影
finalinherited
offstage → bool
finalinherited
onBackgroundImageError → ImageErrorListener?
finalinherited
onDoubleTap → GestureTapCallback?
用户在短时间内触摸了屏幕两次
finalinherited
onDoubleTapCancel → GestureTapCancelCallback?
finalinherited
onDoubleTapDown → GestureTapDownCallback?
finalinherited
onForcePressEnd → GestureForcePressEndCallback?
finalinherited
onForcePressPeak → GestureForcePressPeakCallback?
finalinherited
onForcePressStart → GestureForcePressStartCallback?
finalinherited
onForcePressUpdate → GestureForcePressUpdateCallback?
finalinherited
onForegroundImageError → ImageErrorListener?
finalinherited
onHorizontalDragCancel → GestureDragCancelCallback?
onHorizontalDragDown没有成功完成时触发
finalinherited
onHorizontalDragDown → GestureDragDownCallback?
当一个触摸点开始跟屏幕交互，同时在水平方向上移动时触发
finalinherited
onHorizontalDragEnd → GestureDragEndCallback?
水平拖拽结束时触发
finalinherited
onHorizontalDragStart → GestureDragStartCallback?
当触摸点开始在水平方向上移动时触发
finalinherited
onHorizontalDragUpdate → GestureDragUpdateCallback?
屏幕上的触摸点位置每次改变时，都会触发这个回调
finalinherited
onLongPress → GestureLongPressCallback?
用户触摸屏幕时间超过500ms时触发
finalinherited
onLongPressCancel → GestureLongPressCancelCallback?
finalinherited
onLongPressDown → GestureLongPressDownCallback?
finalinherited
onLongPressEnd → GestureLongPressEndCallback?
用户触摸屏幕时间超过500ms时触发结束
finalinherited
onLongPressMoveUpdate → GestureLongPressMoveUpdateCallback?
用户触摸屏幕时间超过500ms时移动触摸
finalinherited
onLongPressStart → GestureLongPressStartCallback?
用户触摸屏幕时间超过500ms时触发开始
finalinherited
onLongPressUp → GestureLongPressUpCallback?
用户触摸屏幕时间超过500ms时抬起触发
finalinherited
onPanCancel → GestureDragCancelCallback?
用户触摸了屏幕，但是没有完成Tap的动作时触发
finalinherited
onPanDown → GestureDragDownCallback?
当触摸点开始跟屏幕交互时触发
finalinherited
onPanEnd → GestureDragEndCallback?
pan操作完成时触发
finalinherited
onPanStart → GestureDragStartCallback?
当触摸点开始移动时触发
finalinherited
onPanUpdate → GestureDragUpdateCallback?
屏幕上的触摸点位置每次改变时，都会触发这个回调
finalinherited
onScaleEnd → GestureScaleEndCallback?
触摸点不再跟屏幕有任何交互，同时也表示这个scale手势完成
finalinherited
onScaleStart → GestureScaleStartCallback?
触摸点开始跟屏幕交互时触发，同时会建立一个焦点为1.0
finalinherited
onScaleUpdate → GestureScaleUpdateCallback?
跟屏幕交互时触发，同时会标示一个新的焦点
finalinherited
onSecondaryLongPress → GestureLongPressCallback?
finalinherited
onSecondaryLongPressCancel → GestureLongPressCancelCallback?
finalinherited
onSecondaryLongPressDown → GestureLongPressDownCallback?
finalinherited
onSecondaryLongPressEnd → GestureLongPressEndCallback?
finalinherited
onSecondaryLongPressMoveUpdate → GestureLongPressMoveUpdateCallback?
finalinherited
onSecondaryLongPressStart → GestureLongPressStartCallback?
finalinherited
onSecondaryLongPressUp → GestureLongPressCallback?
finalinherited
onSecondaryTap → GestureTapCallback?
finalinherited
onSecondaryTapCancel → GestureTapCancelCallback?
finalinherited
onSecondaryTapDown → GestureTapDownCallback?
****** GestureDetector ****** ///
finalinherited
onSecondaryTapUp → GestureTapUpCallback?
finalinherited
onTap → GestureTapCallback?
手指点击时的回调函数
finalinherited
onTapCancel → GestureTapCancelCallback?
手指取消点击时的回调函数
finalinherited
onTapDown → GestureTapDownCallback?
手指按下时的回调函数
finalinherited
onTapUp → GestureTapUpCallback?
手指松开时的回调函数
finalinherited
onTertiaryLongPress → GestureLongPressCallback?
finalinherited
onTertiaryLongPressCancel → GestureLongPressCancelCallback?
finalinherited
onTertiaryLongPressDown → GestureLongPressDownCallback?
finalinherited
onTertiaryLongPressEnd → GestureLongPressEndCallback?
finalinherited
onTertiaryLongPressMoveUpdate → GestureLongPressMoveUpdateCallback?
finalinherited
onTertiaryLongPressStart → GestureLongPressStartCallback?
finalinherited
onTertiaryLongPressUp → GestureLongPressUpCallback?
finalinherited
onTertiaryTapCancel → GestureTapCancelCallback?
finalinherited
onTertiaryTapDown → GestureTapDownCallback?
finalinherited
onTertiaryTapUp → GestureTapUpCallback?
finalinherited
onVerticalDragCancel → GestureDragCancelCallback?
用户突然停止拖拽时触发
finalinherited
onVerticalDragDown → GestureDragDownCallback?
当一个触摸点开始跟屏幕交互，同时在垂直方向上移动时触发
finalinherited
onVerticalDragEnd → GestureDragEndCallback?
当用户停止移动，这个拖拽操作就被认为是完成了，就会触发这个回调
finalinherited
onVerticalDragStart → GestureDragStartCallback?
当触摸点开始在垂直方向上移动时触发
finalinherited
onVerticalDragUpdate → GestureDragUpdateCallback?
屏幕上的触摸点位置每次改变时，都会触发这个回调
finalinherited
opacity → double?
****** Opacity ****** ///
finalinherited
origin → Offset?
finalinherited
padding → EdgeInsetsGeometry?
finalinherited
physics → ScrollPhysics?
****** SingleChildScrollView ****** ///
finalinherited
placeholderBuilder → HeroPlaceholderBuilder?
finalinherited
primary → bool?
finalinherited
radius → double?
finalinherited
refreshConfig → RefreshConfig?
****** Refreshed ****** ///
finalinherited
replacement → Widget
****** Visibility ****** ///
finalinherited
restorationId → String?
finalinherited
reverse → bool
finalinherited
finalinherited
runAlignment → WrapAlignment
finalinherited
runSpacing → double
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
safeBottom → bool
finalinherited
safeLeft → bool
****** SafeArea ****** ///
finalinherited
safeRight → bool
finalinherited
safeTop → bool
finalinherited
scrollController → ScrollController?
finalinherited
scrollDirection → Axis?
finalinherited
size → Size?
finalinherited
sized → bool
finalinherited
stackFit → StackFit
finalinherited
stepHeight → double?
finalinherited
stepWidth → double?
finalinherited
systemOverlayStyle → SystemUiOverlayStyle?
****** AnnotatedRegion ****** ///
finalinherited
textBaseline → TextBaseline?
finalinherited
textDirection → TextDirection?
finalinherited
top → double?
finalinherited
transform → Matrix4?
****** Transform ****** ///
finalinherited
transitionOnUserGestures → bool
finalinherited
useSingleChildScrollView → bool
是否使用 SingleChildScrollView创建滚动组件 页面逻辑复杂时 设置为 false 以提高滑动性能
finalinherited
verticalDirection → VerticalDirection
finalinherited
visible → bool
finalinherited
width → double?
finalinherited
widthFactor → double?
finalinherited
wrapAlignment → WrapAlignment
finalinherited
wrapCrossAlignment → WrapCrossAlignment
finalinherited
wrapSpacing → double
finalinherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
buildAnnotatedRegion(Widget current) → Widget
inherited
buildBackdropFilter(Widget current) → Widget
inherited
buildCircleAvatar(Widget current) → Widget
inherited
buildClip(Widget current, {CustomClipper? clipper}) → Widget
裁剪组件
inherited
buildFittedBox(Widget current) → Widget
inherited
buildFlex(List<Widget> children) → Widget
inherited
buildFlexible(Widget current) → Widget
inherited
buildGestureDetector(Widget current) → Widget
inherited
buildHero(Widget current) → Widget
inherited
buildOffstage(Widget current) → Widget
inherited
buildPadding(Widget current) → Widget
inherited
buildRefreshed(List<Widget> slivers) → Widget
inherited
buildSingleChildScrollView(Widget current) → Widget
inherited
buildStack(List<Widget> children) → Widget
inherited
buildVisibility(Widget current) → Widget
inherited
buildWrap(List<Widget> children) → Widget
inherited
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