如果将收缩包装
ListView与一起使用
reverse: true，将其滚动到0.0即可完成所需的操作。
import 'dart:collection';import 'package:flutter/material.dart';void main() { runApp(new MyApp());}class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return new MaterialApp( title: 'Example', home: new MyHomePage(), ); }}class MyHomePage extends StatefulWidget { @override _MyHomePageState createState() => new _MyHomePageState();}class _MyHomePageState extends State<MyHomePage> { List<Widget> _messages = <Widget>[new Text('hello'), new Text('world')]; ScrollController _scrollController = new ScrollController(); @override Widget build(BuildContext context) { return new Scaffold( body: new Center( child: new Container( decoration: new BoxDecoration(backgroundColor: Colors.blueGrey.shade100), width: 100.0, height: 100.0, child: new Column( children: [ new Flexible( child: new ListView( controller: _scrollController, reverse: true, shrinkWrap: true, children: new UnmodifiableListView(_messages), ), ), ], ), ), ), floatingActionButton: new FloatingActionButton( child: new Icon(Icons.add), onPressed: () { setState(() { _messages.insert(0, new Text("message ${_messages.length}")); }); _scrollController.animateTo( 0.0, curve: Curves.easeOut, duration: const Duration(milliseconds: 300), ); } ), ); }}
