回顾Flutter自研项目中的两个知识点:Navigator跟bottomNavigationBar。 首先,Navigator理解为页面导航,主要运用push跟pop两个方法。push将元素添加到堆栈的顶部,pop从同一堆栈中删除顶部元素。 push方法具体使用方式,(push就不介绍了)如下: pushNamed: 这种路由需要一开始现在创建App的时候定义 newMaterialApp(...routes:{"...
import 'package:flutter/material.dart'; /// 底部导航栏示例 void main() { runApp( BottomNavigatorWidget() ); } class BottomNavigatorWidget extends StatefulWidget { @override _BottomNavigatorWidgetState createState() => _BottomNavigatorWidgetState(); } class _BottomNavigatorWidgetState extends State<...
import 'package:discover_me/screens/home.dart'; import 'package:discover_me/screens/search.dart'; import 'package:flutter/material.dart'; import 'package:flutter/widgets.dart'; class TabNavigationItem { final Widget page; final Widget title; final Icon icon; TabNavigationItem({this.page, this....
import'package:flutter/material.dart';import'package:flutter_app/pages/home_page.dart';import'package:flutter_app/pages/image_page.dart';import'package:flutter_app/pages/search_page.dart';import'package:flutter_app/pages/setting_page.dart';/// 应用的主界面组件 , 整个应用的初始根节点classMainN...
开始尝试用flutter开发,flutter版本1.0,写类似微信底部tab切换界面时发现界面老被重置,网上找了一圈说保持状态需要子页面mixin AutomaticKeepAliveClientMixin,然后重写 @overrideboolgetwantKeepAlive =>true; 但发现需要配合其他组件,不是随便mixin就有用的,尝试几种写法总结BottomNavigationBar+List<Widget>+AutomaticKeep...
import 'package:flutter_app/pages/setting_page.dart'; /// 应用的主界面组件 , 整个应用的初始根节点 class MainNavigatorWidget extends StatefulWidget { @override _MainNavigatorWidgetState createState() => _MainNavigatorWidgetState(); } /// 该类的父类 State 接受一个泛型 ...
这不起作用,因为Navigator.of(context)找到BottomNavigatorBar本身的祖先。 事实上,控件树看起来像这样: ▼MyApp ▼MaterialApp ▼<someotherwidgets>▼ Navigator ▼<someotherwidgets>▼ App ▼Scaffold ▼body:<someotherwidgets>▼ BottomNavigationBar 如果我们打开Flutter inspector: ...
import 'package:flutter_app/pages/setting_page.dart'; /// 应用的主界面组件 , 整个应用的初始根节点class MainNavigatorWidget extends StatefulWidget {@override_MainNavigatorWidgetState createState() => _MainNavigatorWidgetState();}/// 该类的父类 State 接受一个泛型/// 泛型类型是 StatefulWidget 类型...
简介:【Flutter】底部导航栏实现 ( BottomNavigationBar 底部导航栏 | BottomNavigationBarItem 导航栏条目 | PageView )(二) 六、完整代码示例 完整代码示例 : import 'package:flutter/material.dart';/// 底部导航栏示例void main() {runApp(BottomNavigatorWidget());}class BottomNavigatorWidget extends Statefu...
Flutter中的 Scaffold 组件实现了基础的材料设计 ( Material Design ) 可视化布局结构 ; Scaffold 提供了显示左侧侧拉导航栏 , 底部导航 , 浮动按钮等API; Scaffold 构造函数如下 : 代码语言:javascript 复制 classScaffoldextendsStatefulWidget{/// Creates a visual scaffold for material design widgets.constScaffold...