zhiying_base_widget/lib/pages/home_page/home_page.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:cached_network_image/cached_network_image.dart';
import 'package:zhiying_comm/zhiying_comm.dart';

class HomePage extends StatefulWidget {
  HomePage({Key key}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  int _currentIndex = 0;
  List<String> _tab = List();
  List<Widget> _contentWidgets = List();

  @override
  void initState() {
    _tab.add('首页');
    _tab.add('个人中心');
    _contentWidgets = _tab.map((item) {
      return PageFactory.create('mainPage', Map());
    }).toList();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    print('home_page build');
    return Scaffold(
        body: IndexedStack(
          index: _currentIndex,
          children: _contentWidgets,
        ),
        //底部导航栏
        bottomNavigationBar: createBottomNavigationBar());
  }

  Widget createBottomNavigationBar() {
    List<BottomNavigationBarItem> items = List<BottomNavigationBarItem>();

    for (int i = 0; i < _tab.length; i++) {
      items.add(BottomNavigationBarItem(
          icon: Container(
            width: 24,
            height: 24,
            margin: EdgeInsets.only(bottom: 4),
            child: CachedNetworkImage(
              imageUrl:
                  "http://www.hairuyi.com/Upload/slide/1594279903_1_0.png",
              fit: BoxFit.fitWidth,
            ),
          ),
          title: Text('tab2')));
    }

    if (items.length < 2) {
      return Container();
    }
    return BottomNavigationBar(
        backgroundColor: Colors.white,
        type: BottomNavigationBarType.fixed,
        selectedFontSize: 11,
        unselectedFontSize: 11,
        currentIndex: _currentIndex,
        elevation: 0,
        onTap: ((index) {
          setState(() {
            _currentIndex = index;
          });
        }),
        //底部导航栏
        items: items);
  }
}