本文實例為大家分享了Flutter實現底部導航欄的具體代碼，供大家參考，具體內容如下
效果
實現
先將自動生成的main.dart里面的代碼刪除，
import 'package:flutter/material.dart';import 'package:flutter_guohe/pages/main.dart'; void main() { runApp(new Guohe());}創建app.dart作為首頁的頁面文件
class Guohe extends StatefulWidget { @override GuoheState createState() => new GuoheState();} class GuoheState extends State<Guohe> { @override Widget build(BuildContext context) { }}創建today.dart、kb.dart、playground.dart三個頁面文件作為tabview的填充文件，這里用playground.dart為例。
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("操場"), backgroundColor: Color.fromARGB(255, 119, 136, 213), //設置appbar背景顏色 centerTitle: true, //設置標題是否局中 ), body: new Center( child: new Text('操場'), ), ), ); }}app.dart的完整代碼
/** * 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: "課表", icon: new Icon(Icons.map), ), new Tab( text: "操場", icon: new Icon(Icons.directions_run), ), ], ), ), ), ); }}其中
labelColor: Colors.deepPurpleAccent,unselectedLabelColor: Colors.black26,
第一個屬性是控制標簽顏色，這里我選了紫色，第二個屬性是未選中標簽時的顏色。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VEVB武林網。
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