本文实例为大家分享了Flutter实现底部导航栏的具体代码,供大家参考,具体内容如下
效果
实现
先将自动生成的main.dart里面的代码删除,
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import 'package:flutter/material.dart' ; import 'package:flutter_guohe/pages/main.dart' ; void main() { runApp( new Guohe()); } |
创建app.dart作为首页的页面文件
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class Guohe extends StatefulWidget { @override GuoheState createState() => new GuoheState(); } class GuoheState extends State<Guohe> { @override Widget build(BuildContext context) { } } |
创建today.dart、kb.dart、playground.dart三个页面文件作为tabview的填充文件,这里用playground.dart为例。
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import 'package:flutter/material.dart' ; class Playground extends StatefulWidget { @override PlaygroundState createState() => new PlaygroundState(); } class PlaygroundState extends State<Playground> { @override Widget build(BuildContext context) { return new MaterialApp( home: new Scaffold( appBar: new AppBar( title: new Text( "操场" ), backgroundColor: Color.fromARGB( 255 , 119 , 136 , 213 ), //设置appbar背景颜色 centerTitle: true , //设置标题是否局中 ), body: new Center( child: new Text( '操场' ), ), ), ); } } |
app.dart的完整代码
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/** * APP的主入口文件 */ import 'package:flutter/material.dart' ; import 'package:flutter_guohe/pages/main/today.dart' ; import 'package:flutter_guohe/pages/main/playground.dart' ; import 'package:flutter_guohe/pages/main/kb.dart' ; import 'package:flutter_guohe/pages/main/leftmenu.dart' ; import 'package:flutter_guohe/common/eventBus.dart' ; //果核的主界面 class Guohe extends StatefulWidget { @override GuoheState createState() => new GuoheState(); } class GuoheState extends State<Guohe> with SingleTickerProviderStateMixin { TabController controller; @override void initState() { controller = new TabController(length: 3 , vsync: this ); } @override void dispose() { controller.dispose(); super .dispose(); } @override Widget build(BuildContext context) { return new MaterialApp( home: new Scaffold( drawer: new LeftMenu(), body: new TabBarView( controller: controller, children: <Widget>[ new Today(), new Kb(), new Playground(), ], ), bottomNavigationBar: new Material( color: Colors.white, child: new TabBar( controller: controller, labelColor: Colors.deepPurpleAccent, unselectedLabelColor: Colors.black26, tabs: <Widget>[ new Tab( text: "今日" , icon: new Icon(Icons.brightness_5), ), new Tab( text: "课表" , icon: new Icon(Icons.map), ), new Tab( text: "操场" , icon: new Icon(Icons.directions_run), ), ], ), ), ), ); } } |
其中
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labelColor: Colors.deepPurpleAccent, unselectedLabelColor: Colors.black26, |
第一个属性是控制标签颜色,这里我选了紫色,第二个属性是未选中标签时的颜色。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/qq_33419925/article/details/84987282