如何自动滚动到网格视图的末尾？

声明一个滚动控制器，然后使用它来移动到所需的位置。这是滚动到最后一个元素的示例。请注意，滚动控制器已显式声明，因此您无法发出

primary: true

import 'package:flutter/material.dart';void main() {  runApp(new MyApp());}class MyApp extends StatelessWidget {  @override  Widget build(BuildContext context) {    return new MaterialApp(      title: 'Flutter Demo',      theme: new ThemeData(        primarySwatch: Colors.blue,      ),      home: new MyHomePage(),    );  }}class MyHomePage extends StatefulWidget {  @override  _MyHomePageState createState() => new _MyHomePageState();}class _MyHomePageState extends State<MyHomePage> {  int _counter = 0;  ScrollController _scrollController;// NEW  @override    // NEW  void initState() {      // NEW    super.initState();    // NEW    _scrollController = new ScrollController(   // NEW      initialScrollOffset: 0.0,      // NEW      keepScrollOffset: true,        // NEW    );  }  void _toEnd() {         // NEW    _scrollController.animateTo(     // NEW      _scrollController.position.maxScrollExtent,          // NEW      duration: const Duration(milliseconds: 500),         // NEW      curve: Curves.ease, // NEW    );         // NEW  } // NEW  @override  Widget build(BuildContext context) {    List items = [];    for (int i = 0; i < _counter; i++) {      items.add(new Text("Item $i"));    }    return new Scaffold(      appBar: new AppBar(        title: new Text("Scroll To End Test"),        actions: <Widget>[// NEW          new IconButton( // NEW   icon: new Icon(Icons.arrow_downward), onPressed: _toEnd)// NEW        ],     // NEW      ),      body: new GridView.extent(        //primary: true, // REMOVED        maxCrossAxisExtent: 150.0,        children: items,        controller: _scrollController,          // NEW      ),      floatingActionButton: new FloatingActionButton(        onPressed: () {          setState(() { _counter++;          });        },        tooltip: 'Increment',        child: new Icon(Icons.add),      ),    );  }}

关于“奖励点”，我对ScrollControllers不太熟练，但是据我所知，该

.animateTo()

var cursor = i/(# items) * _scrollController.position.maxScrollExtent

根据网格每行有多少个对象来调整此值。我知道这只是一个草图，但我认为它可以带您到那里。