BaseTabBar class

自定义 TabBar 组件

特性：

  • 可滚动：当 Tab 总宽度超过可用空间时，支持横向滚动
  • 从左开始排列：Tab 从左侧开始排列，不居中
  • Tab 宽度自适应：每个 Tab 的宽度根据标题文本自动调整，不均分可用空间
  • 右侧留白：如果右边还有空间，则留白，不填充
  • Indicator 对齐：支持左对齐、居中对齐、右对齐三种方式
Inheritance
Implemented types

Constructors

BaseTabBar({Key? key, required TabController controller, required List<String> tabs, bool smoothIndicator = true, ValueChanged<int>? onChange, Color? labelColor, Color? unselectedLabelColor, TextStyle? labelStyle, TextStyle? unselectedLabelStyle, EdgeInsetsGeometry? tabPadding, double? tabSpacing, Color? indicatorColor, double? indicatorHeight, double? indicatorWidth, EdgeInsetsGeometry? indicatorPadding, IndicatorAlignment indicatorAlignment = IndicatorAlignment.center, Color? backgroundColor, double? height, ScrollController? scrollController})

Properties

backgroundColor → Color?
背景颜色
final
controller → TabController
TabController，用于控制 Tab 的选中状态
final
hashCode → int
The hash code for this object.
no setterinherited
height → double?
TabBar 的高度
final
indicatorAlignment → IndicatorAlignment
指示器对齐方式
final
indicatorColor → Color?
指示器颜色（下划线颜色）
final
indicatorHeight → double?
指示器高度
final
indicatorPadding → EdgeInsetsGeometry?
指示器padding
final
indicatorWidth → double?
指示器宽度（如果为 null，则自适应 Tab 宽度）
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
labelColor → Color?
选中的 Tab 文字颜色
final
labelStyle → TextStyle?
选中的 Tab 文字样式
final
onChange → ValueChanged<int>?
Tab 切换时的回调，参数为当前选中 tab 的索引
final
preferredSize → Size
The size this widget would prefer if it were otherwise unconstrained.
no setteroverride
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scrollController → ScrollController?
可选外部滚动控制器，若为 null 则内部创建并管理
final
smoothIndicator → bool
是否启用平滑指示器（基于 TabController.animation 插值） 在低端设备上可以将此项设为 false，以关闭精确监听并使用原始 index 驱动的指示器更新。
final
tabPadding → EdgeInsetsGeometry?
Tab 的内边距
final
tabs → List<String>
Tab 标题列表
final
tabSpacing → double?
Tab 之间的间距
final
unselectedLabelColor → Color?
未选中的 Tab 文字颜色
final
unselectedLabelStyle → TextStyle?
未选中的 Tab 文字样式
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<BaseTabBar>
Creates the mutable state for this widget at a given location in the tree.
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
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, 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

Operators

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