스크롤 위치 파악 및 더보기 관련 문의사항 드립니다.

현재 하기처럼 코딩이 작성되어 있는데 더보기 기능이 되지 않아 정확히 어떤 것이 문제인지 문의드립니다!

addData의 경우 부모로부터 잘 받은 것 같은데.. 이상하게 더보기 기능이 발현되지 않습니다ㅠ

import 'package:flutter/material.dart';
import 'style.dart' as style;
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:flutter/rendering.dart';

void main() {
  runApp(
      MaterialApp(
        theme: style.theme,
          home : MyApp()
      )
  );
}

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  var tab = 0;
  var data = [];

  addData(a){
    setState(() {
      data.add(a);
    });
  }

  getData() async {
    var result = await http.get(Uri.parse('https://codingapple1.github.io/app/data.json'));
    if(result.statusCode == 200){
    } else{

    }
    var result2 = jsonDecode(result.body);

    setState((){
      data = result2;
    });
  }

  @override
  void initState() {
    super.initState();
    getData();
  }

  @override
  Widget build(BuildContext context) {

    return Scaffold(
      appBar: AppBar(
        title: Text('Insta'),
        actions: [
          IconButton(
              icon: Icon(Icons.add_box_outlined),
              onPressed: (){},
              iconSize: 30,
          )
        ]
      ),
      body: [Home(data : data), Text('샵')]
,
        bottomNavigationBar: BottomNavigationBar(
         showUnselectedLabels: false,
         showSelectedLabels: false,
         onTap: (i){
           setState(() {
             tab = i;
           });
         },
         items: [
           BottomNavigationBarItem(icon: Icon(Icons.home_outlined),label : '홈'),
           BottomNavigationBarItem(icon: Icon(Icons.shopping_bag_outlined), label: '샵'),
         ],
        ),
      );

  }
}

class Home extends StatefulWidget {
  const Home({Key? key, this.data, this.addData}) : super(key: key);
  final data;
  final addData;

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

class _HomeState extends State<Home> {

  var scroll = ScrollController();

  getMore() async {
    var result = await http.get(Uri.parse('https://codingapple1.github.io/app/more2.json'));
    var result2 = jsonDecode(result.body);
    widget.addData(result2);
  }

  @override
  void initState() {
    super.initState();

    scroll.addListener( () {
      if(scroll.position.pixels == scroll.position.maxScrollExtent) {
        getMore();
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    print(widget.data);
    if(widget.data.isNotEmpty) {
      return ListView.builder(itemCount: widget.data.length, controller: scroll, itemBuilder: (c, i) {
        return Column(
          children: [
            Image.network(widget.data[i]['image']),
            Container(
              constraints: BoxConstraints(maxWidth: 600),
              padding: EdgeInsets.all(20),
              width: double.infinity,
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text('좋아요 ${widget.data[i]['likes']}'),
                  Text(widget.data[i]['date']),
                  Text(widget.data[i]['content']),
                ],
              ),
            )
          ],
        );
      });
    }
    else{
      return Text('로딩중임');
    }
  }
}