我已经创建了一个三个图像滑块，但我不知道如何使该滑块的页面指示器。我想根据第二个图像滑块。我附上正常的页面滑块所在的地方。我需要滑块下方的指示器作为中心。

我需要使滑块指示器下面这个滑块。我附加的滑块图像，我需要我搜索堆栈，但我找不到相同的喜欢，所以我需要帮助。

完整代码：

import 'package:carousel_slider/carousel_slider.dart';
import 'package:flutter/material.dart';

void main(){
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Home(),
      debugShowCheckedModeBanner: false,
    );
  }
}

class Home extends StatefulWidget {
  const Home({Key? key}) : super(key: key);

  @override
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home> {
  final scaffoldKey = GlobalKey<ScaffoldState>();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        key: scaffoldKey,
        appBar: AppBar(
          elevation: 0,
          toolbarHeight: 100,
          backgroundColor: Colors.white38,
          centerTitle: true,
          title: const Text("Treva Shopping",
          style: TextStyle(
            color: Colors.black45
          ),),
          leading: IconButton(
            icon: const Icon(Icons.menu,
            color: Colors.black45,
            size: 32),
            onPressed: (){
              if(scaffoldKey.currentState!.isDrawerOpen){
                scaffoldKey.currentState!.closeDrawer();
                //close drawer, if drawer is open
              }else{
                scaffoldKey.currentState!.openDrawer();
                //open drawer, if drawer is closed
              }
            },
          ),
        ),
        drawer:buildDrawer(),
        body: CarouselSlider(
          items: [Image.asset("assets/AC Banner.png",
            height: 600,
          width: 380),
          Image.asset("assets/Kitchen Banner.png",
              height: 600,
              width: 380),
          Image.asset("assets/samsung banner.png",
              height: 600,
              width: 380)],
          options: CarouselOptions(
            autoPlay: true,
            enableInfiniteScroll: false,
          ),)
    );
  }

  Drawer buildDrawer() {
    return Drawer(
        child: ListView(
          children: <Widget>[
            const SizedBox(height: 20),
            ListTile(
              title: const Text("Treva",
              textAlign: TextAlign.center,
              style: TextStyle(
                color: Colors.black45,
              fontSize: 25),
              ),
              trailing: IconButton(
                  onPressed: (){
                    Navigator.pop(context);
                  },
                  icon: const Icon(Icons.close)),
            ),
            const SizedBox(height: 10),
            const ExpansionTile(
              leading: Icon(Icons.category_outlined),
              title: Text("All Category"),
              children:[SizedBox(height: 05,),
                Text("Sample 1")],
            ),
            const ExpansionTile(
              leading: Icon(Icons.microwave_outlined),
              title: Text("Kitchen Appliances"),
              children:[SizedBox(height: 05,),
                Text("Sample 1")],
            ),
            const ExpansionTile(
              leading: Icon(Icons.tv_rounded),
              title: Text("Television"),
              children:[SizedBox(height: 05,),
                Text("Sample 1")],
            ),
            const ExpansionTile(
              leading: Icon(Icons.air_outlined),
              title: Text("Air Conditioners"),
              children:[SizedBox(height: 05,),
                Text("Sample 1")],
            ),
            const ExpansionTile(
              leading: Icon(Icons.kitchen_outlined),
              title: Text("Refrigerators"),
              children:[SizedBox(height: 05,),
                Text("Sample 1")],
            ),const ExpansionTile(
              leading: Icon(Icons.local_laundry_service_outlined),
              title: Text("Washing Machines"),
              children:[SizedBox(height: 05,),
                Text("Sample 1")],
            ),
          ],
        ),
      );
  }
}