Flutter标签控制器

import 'package:demo7/%E6%88%91%E7%9A%84/Mine.dart';

import 'package:demo7/%E7%9F%A5%E8%AF%86%E5%BA%93/Library.dart';

import 'package:demo7/%E9%A6%96%E9%A1%B5/Home.dart';

import 'package:demo7/PCH.dart';

import 'package:flutter/material.dart';

class BaseTabBarextends StatefulWidget {

@override

  _BaseTabBarState createState() =>_BaseTabBarState();

}

class _BaseTabBarStateextends State {

final Homevc1 =Home();

final Libraryvc2 =Library();

final Minevc3 =Mine();

ListvcList =List();

intcurrentPage =0;

@override

  void initState() {

// TODO: implement initState

    super.initState();

vcList

      ..add(vc1)

..add(vc2)

..add(vc3);

}

@override

  Widget build(BuildContext context) {

return Scaffold(

body:vcList[currentPage],

bottomNavigationBar:BottomNavigationBar(

type: BottomNavigationBarType.fixed,// 间距一致

        showUnselectedLabels:true,// 显示非选中图标文本

        currentIndex:currentPage,// 当前选中的标签

        selectedFontSize: FontC,

unselectedFontSize: FontC,

onTap: (index) {

setState(() {

currentPage = index;

});

},

items: [

BottomNavigationBarItem(

title:Text('首页', style:TextStyle(color:currentPage ==0 ? PublicColor : LabelColorTab),),

icon:Container(child:Image.asset('lib/Images/tabHome0.png'), width:25, height:25,),

activeIcon:Container(child:Image.asset('lib/Images/tabHome.png'), width:25, height:25,),

),

BottomNavigationBarItem(

title:Text('知识库', style:TextStyle(color:currentPage ==1 ? PublicColor : LabelColorTab),),

icon:Container(child:Image.asset('lib/Images/tabLibrary0.png'), width:25, height:25,),

activeIcon:Container(child:Image.asset('lib/Images/tabLibrary.png'), width:25, height:25,),

),

BottomNavigationBarItem(

title:Text('我的', style:TextStyle(color:currentPage ==2 ? PublicColor : LabelColorTab),),

icon:Container(child:Image.asset('lib/Images/tabMine0.png'), width:25, height:25,),

activeIcon:Container(child:Image.asset('lib/Images/tabMine.png'), width:25, height:25,),

),

BottomNavigationBarItem(

title:Text('我的', style:TextStyle(color:currentPage ==2 ? PublicColor : LabelColorTab),),

icon:Container(child:Image.asset('lib/Images/tabMine0.png'), width:25, height:25,),

activeIcon:Container(child:Image.asset('lib/Images/tabMine.png'), width:25, height:25,),

),

],

),

);

}

}