import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart';
class MyList extends StatefulWidget { MyList({Key key}) : super(key: key); @override _MyListState createState() => _MyListState();
}
class _MyListState extends State<MyList> { final ScrollController _scrollController = ScrollController(); final lastKey = GlobalKey(); List<String> items; @override void initState() { super.initState(); items = List<String>.generate(8, (i) => "Item $i"); } void add() { setState(() { items.add("new Item ${items.length}"); }); SchedulerBinding.instance.addPostFrameCallback((_) => scrollToEnd()); } void scrollToEnd() async { await _scrollController.animateTo( _scrollController.position.maxScrollExtent, duration: const Duration(milliseconds: 350), curve: Curves.easeOut); Scrollable.ensureVisible(lastKey.currentContext); } @override Widget build(BuildContext context) { return MaterialApp( title: "List", home: Scaffold( body: ListView.builder( controller: _scrollController, itemCount: items.length, shrinkWrap: true, itemBuilder: (context, index) { return ListTile( title: Text('${items[index]}'), key: index == items.length - 1 ? lastKey : null, ); }, ), floatingActionButton: FloatingActionButton( onPressed: () { add(); }, child: Icon(Icons.add), ), )); }
}