flutter_google_map/lib/pages/index_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_google_map/pages/tabs/business_page.dart';
import 'package:flutter_google_map/pages/tabs/home_page.dart';
import 'package:flutter_google_map/pages/tabs/mine_page.dart';
import 'package:flutter_google_map/pages/tabs/taxi_page.dart';

class IndexPage extends StatefulWidget {
  int pageIndex;
  IndexPage({super.key, this.pageIndex = 0});

  @override
  State<IndexPage> createState() => _IndexPageState();
}

class _IndexPageState extends State<IndexPage> {
  final List<BottomNavigationBarItem> bottomTabs = const [
    BottomNavigationBarItem(icon: Icon(Icons.home), label: '出行'),
    BottomNavigationBarItem(icon: Icon(Icons.business), label: '周边惠'),
    BottomNavigationBarItem(icon: Icon(Icons.school), label: '打车'),
    BottomNavigationBarItem(icon: Icon(Icons.school), label: '我的'),
  ];

  final List<Widget> pages = const [
    HomePage(),
    BusinessPage(),
    TaxiPage(),
    MinePage(),
  ];

  int currentIndex = 0;

  Size get size => MediaQuery.of(context).size;

  final pageController = PageController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Maps Sample App'),
        backgroundColor: Colors.green[700],
      ),
      bottomNavigationBar: BottomNavigationBar(
        items: bottomTabs,
        currentIndex: currentIndex,
        type: BottomNavigationBarType.fixed,
        onTap: (index) {
          setState(() {
            currentIndex = index;
            pageController.jumpToPage(index);
          });
        },
      ),
      drawer: Drawer(
        child: ListView(
          padding: EdgeInsets.zero,
          children: <Widget>[
            const DrawerHeader(
              decoration: BoxDecoration(
                color: Colors.green,
              ),
              child: Text('Drawer Header'),
            ),
            ListTile(
              title: const Text('Item 1'),
              onTap: () {
                Navigator.pop(context);
              },
            ),
            ListTile(
              title: const Text('Item 2'),
              onTap: () {
                Navigator.pop(context);
              },
            ),
          ],
        ),
      ),
      body: _getPageBody(context),
    );
  }

  bool get wantKeepAlive => true;

  Widget _getPageBody(BuildContext context) {
    return PageView(
      controller: pageController,
      physics: const NeverScrollableScrollPhysics(),
      onPageChanged: (index) {
        setState(() {
          currentIndex = index;
        });
      },
      children: pages,
    );
  }
}