NZNavBar class

NZNavBar 是一个多功能、高度可定制的顶部导航栏组件。

它基于 Flutter 的 AppBar 构建，提供了四种常见的业务场景模式：

示例用法：

// 标准模式
const NZNavBar(title: '首页')

// 搜索模式
NZNavBar.search(
  title: '搜索文档',
  onSearch: () => print('开始搜索'),
)

Inheritance

Implemented types

Constructors

NZNavBar({Key? key, String? title, Widget? titleWidget, Widget? leading, List<Widget>? actions, bool centerTitle = true, double elevation = 0, Color? backgroundColor, Color? foregroundColor}): 创建一个标准模式的导航栏
const
NZNavBar.logo({Key? key, required String? logoUrl, String? title, Widget? leading, List<Widget>? actions, double elevation = 0, Color? backgroundColor, Color? foregroundColor}): 创建一个带有 Logo 展示的导航栏
const
NZNavBar.miniApp({Key? key, String? title, VoidCallback? onMiniAppShare, VoidCallback? onMiniAppClose, Widget? leading, double elevation = 0, Color? backgroundColor, Color? foregroundColor}): 创建一个小程序风格的导航栏
const
NZNavBar.search({Key? key, String? title, required VoidCallback? onSearch, ValueChanged<String>? onSearchChanged, Widget? leading, List<Widget>? actions, double elevation = 0, Color? backgroundColor, Color? foregroundColor}): 创建一个带有搜索功能的导航栏
const

actions → List<Widget>?: 右侧操作按钮列表
final
backgroundColor → Color?: 背景颜色
final
centerTitle → bool: 标题是否居中显示
final
elevation → double: 阴影高度
final
foregroundColor → Color?: 前景颜色（影响文字和图标颜色）
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
leading → Widget?: 左侧领先组件（通常为返回按钮或菜单图标）
final
logoUrl → String?: Logo 图片的 URL 地址（仅在 NZNavBarType.logo 模式下有效）
final
onMiniAppClose → VoidCallback?: 小程序模式下的关闭按钮点击回调
final
onMiniAppShare → VoidCallback?: 小程序模式下的分享按钮点击回调
final
onSearch → VoidCallback?: 点击搜索按钮或提交搜索时的回调
final
onSearchChanged → ValueChanged<String>?: 搜索框内容变化时的回调
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
title → String?: 导航栏标题文本
final
titleWidget → Widget?: 自定义标题组件，优先级高于 title
final
type → NZNavBarType: 导航栏类型
final

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<NZNavBar>: 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