scroll_test.dart

import 'package:flutter/material.dart';

class ScrollTest extends StatefulWidget {
	@override
	_ScrollTestState createState() => _ScrollTestState();
}

class _ScrollTestState extends State<ScrollTest> {
	ScrollController _scrollController = ScrollController();
	
	@override
	void initState() {
		this._scrollController.addListener(() {
			print("Execute Listner..........");
		});
		super.initState();
	}
	
	
	@override
	void dispose() {
		this._scrollController?.dispose();
		super.dispose();
	}
	
	@override
	Widget build(BuildContext context) {
		return ListView.builder(
			controller: _scrollController,
			itemCount: 1,
			itemBuilder: (context, position) {
				return Text("Hello Developer~ $position");
			},
		);
	}
}