Flutter底部不规则导航的实现过程
前言
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实现方法:
1、main.dart文件
import 'package:flutter/material.dart'; import 'bootom_appBar.dart'; void main () =>runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title:'不规则底部导航', //自定义主题样本 theme:ThemeData( primarySwatch:Colors.lightBlue ), home:BottomAppBarDemo(), ); } }
2、bootom_appBar.dart
import 'package:flutter/material.dart'; import 'each_view.dart'; class BottomAppBarDemo extends StatefulWidget { @override _BottomAppBarDemoState createState() => _BottomAppBarDemoState(); } class _BottomAppBarDemoState extends State<BottomAppBarDemo> { List<Widget> _eachView; int _index = 0; @override void initState() { _eachView = List(); _eachView ..add(EachView('主页的页面')); _eachView ..add(EachView('副页的页面')); // TODO: implement initState super.initState(); } @override Widget build(BuildContext context) { return Scaffold( //变换页面 body: _eachView[_index], floatingActionButton: FloatingActionButton( onPressed: (){ Navigator.of(context).push(MaterialPageRoute(builder: (BuildContext context){ return EachView('新添加的页面'); })); }, tooltip: '添加', child: Icon( Icons.add, color: Colors.white, ), ), floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked, bottomNavigationBar: BottomAppBar( //工具栏比NavigationBar灵活 color: Colors.lightBlue, //与fab融合 //圆形缺口 shape: CircularNotchedRectangle(), child: Row( mainAxisSize: MainAxisSize.max, mainAxisAlignment: MainAxisAlignment.spaceAround, children: <Widget>[ IconButton( icon: Icon(Icons.home), color: Colors.white, onPressed: (){ setState(() { _index = 0; }); }, ), IconButton( icon: Icon(Icons.airport_shuttle), color: Colors.white, onPressed: (){ setState(() { _index = 1; }); }, ) ], ), ), ); } }
3、each_view.dart
import 'package:flutter/material.dart'; class EachView extends StatefulWidget { String _title; EachView(this._title); @override _EachViewState createState() => _EachViewState(); } class _EachViewState extends State<EachView> { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: Text(widget._title),), body: Center(child: Text(widget._title),), ); } }
4、效果展示
总结
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