travelguideProject/src/lib/main.dart

import 'package:flutter/material.dart';
import 'package:travelguide/travelguideapp/ui/boundary/MuseumInfoPage.dart';
import 'package:travelguide/travelguideapp/ui/boundary/CommunityPostPage.dart';
import 'package:travelguide/travelguideapp/ui/boundary/ServicePage.dart';
import 'package:travelguide/travelguideapp/ui/boundary/MapPage.dart';
import 'package:travelguide/travelguideapp/ui/boundary/collection0.dart';
import 'package:travelguide/travelguideapp/ui/boundary/collection1.dart';
import 'package:travelguide/travelguideapp/ui/boundary/collection2.dart';
import 'package:travelguide/travelguideapp/ui/boundary/collection3.dart';
import 'package:travelguide/travelguideapp/ui/boundary/collection4.dart';
import 'package:travelguide/travelguideapp/data/MyDatabase.dart';
import 'package:path/path.dart';
import 'dart:async';
import 'package:sqflite/sqflite.dart';

void main() async{
  WidgetsFlutterBinding.ensureInitialized();

  // 初始化数据库
  final database = await MyDatabase.initDatabase();

  Future<void> insertMuseumInfoData() async {
    final databasePath = await getDatabasesPath();
    final path = join(databasePath, 'travelguide.db');
    final database = await openDatabase(path);

    await database.insert('MuseumInfo', {
      'MuseumName': '',
      'MuseumDetail': '',
      'ImagePath': ''
    });

    await database.close();
  }
  insertMuseumInfoData();

  Future<void> deleteMuseumInfoData() async {
    final databasePath = await getDatabasesPath();
    final path = join(databasePath, 'travelguide.db');
    final database = await openDatabase(path);

    await database.rawDelete(
        'DELETE FROM MuseumInfo WHERE MuseumName = **'
    );

    await database.close();
  }
  deleteMuseumInfoData();

  Future<void> insertCollectionInfoData() async {
    final databasePath = await getDatabasesPath();
    final path = join(databasePath, 'travelguide.db');
    final database = await openDatabase(path);

    await database.insert('CollectionInfo', {
    'CollectionID': 1,
    'MuseumName': '天津市博物馆',
    'CollectionName': '',
    'CollectionDetail':
    '        ',
    'ImagePath':''
    });

    await database.close();
  }
  insertCollectionInfoData();

  Future<void> deleteCollectionInfoData() async {
    final databasePath = await getDatabasesPath();
    final path = join(databasePath, 'travelguide.db');
    final database = await openDatabase(path);

    await database.rawDelete(
        'DELETE FROM CollectionInfo WHERE CollectionID = **'
    );

    await database.close();
  }
  deleteCollectionInfoData();

  // Future<void> insertCommunityInfoData() async {
  //   final databasePath = await getDatabasesPath();
  //   final path = join(databasePath, 'travelguide.db');
  //   final database = await openDatabase(path);
  //
  //   await database.insert('CommunityInfo', {
  //     'CommunityID': '',
  //     'MuseumName': '',
  //     'Author': '',
  //     'PostTime':'',
  //     'Comment':''
  //   });
  //
  //   await database.close();
  // }
  // insertCommunityInfoData();

  Future<void> deleteCommunityInfoData() async {
    final databasePath = await getDatabasesPath();
    final path = join(databasePath, 'travelguide.db');
    final database = await openDatabase(path);

    await database.rawDelete(
        'DELETE FROM CommunityInfo WHERE CommunityID = 1'
    );

    await database.close();
  }
  deleteCommunityInfoData();

  // Future<void> insertServiceInfoData() async {
  //   final databasePath = await getDatabasesPath();
  //   final path = join(databasePath, 'travelguide.db');
  //   final database = await openDatabase(path);
  //
  //   await database.insert('ServiceInfo', {
  //     'ServiceID': '',
  //     'MuseumName': '',
  //     'Service': ''
  //   });
  //
  //   await database.close();
  // }
  // insertServiceInfoData();

  Future<void> deleteServiceInfoData() async {
    final databasePath = await getDatabasesPath();
    final path = join(databasePath, 'travelguide.db');
    final database = await openDatabase(path);

    await database.rawDelete(
        'DELETE FROM ServiceInfo WHERE ServiceID = 1'
    );

    await database.close();
  }
  deleteServiceInfoData();



  runApp(MaterialApp(
    initialRoute: '/', // 设置初始路由
    routes: {
      '/': (context) => MyHomePage(),
      '/targetPage0': (context) => collection0(),
      '/targetPage1': (context) => collection1(),
      '/targetPage2': (context) => collection2(),
      '/targetPage3': (context) => collection3(),
      '/targetPage4': (context) => collection4(),
    },
  ));
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _currentIndex = 0;

  void _onTabTapped(int index) {
    setState(() {
      _currentIndex = index;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _currentIndex == 0
          ? MuseumInfoPage()
          : _currentIndex == 1
          ? CommunityPostPage()
          : _currentIndex == 2
          ? ServicePage()
          : MapPage(),
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: _currentIndex,
        unselectedItemColor: Colors.black38, // 未选中的项颜色
        selectedItemColor: Colors.green, // 选中的项颜色
        items: [
          BottomNavigationBarItem(
            icon: Icon(Icons.account_balance),
            label: '信息展示',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.camera),
            label: '用户社群',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.dashboard),
            label: '服务信息',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.map),
            label: '地图显示',
          ),
        ],
        onTap: _onTabTapped,
      ),
    );
  }
}