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import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
home: ScrollTest(),
class ScrollTest extends StatefulWidget {
_ScrollTestState createState() => _ScrollTestState();
class _ScrollTestState extends State<ScrollTest> {
ScrollController _scrollController = ScrollController();
void initState() {
this._scrollController.addListener(() {
print("Execute Listner..........");
void dispose() {
Widget build(BuildContext context) {
return ListView.builder(
physics: AlwaysScrollableScrollPhysics(),
controller: _scrollController,
itemCount: 1,
itemBuilder: (context, position) {
return Text("Hello Developer~ $position");
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