Flutter ScrollController不能正常工作开发者社区

link之家

链接快照平台

输入网页链接，自动生成快照
标签化管理网页链接

相关文章推荐

大鼻子的海龟 · 北京大学未来技术学院· 2 月前 ·

从容的排球 · 显示数据库数据表 (C#) | ...· 5 月前 ·

活泼的足球 · 警告 C26495 | Microsoft ...· 1 年前 ·

逆袭的黑框眼镜 · ADO.NET的弹性连接控制[ADO.NET ...· 2 年前 ·

瘦瘦的海豚 · java - Mismatched ...· 2 年前 ·

import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
class Class extends StatefulWidget {
final int data;
final List list;
Class({required this.data, required this.list});
@override
_ClassState createState() => _ClassState();
class _ClassState extends State<Class> with TickerProviderStateMixin {
late Animation<double> animation;
late AnimationController animationController;
late double height = 0;
final List lst = [
 [true, true, true, true],
[false, false, false, false],
[true, false, false, false],
[true, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
void initState() {
  super.initState();
animationController =
    AnimationController(vsync: this, duration: Duration(seconds: 5));
animation = Tween<double>(begin: 0, end: 200).animate(animationController)
  ..addListener(() {
    setState(() {});
  ..addStatusListener((status) {});
animationController.forward();
Widget container(data) {
return Stack(
  children: [
    GestureDetector(
      onTap: () {
        setState(() {
          animationController.forward();
      child: Transform.translate(
        offset: Offset(0, animation.value),
        child: Container(
          color: lst[data][0] ? Colors.black : Colors.transparent,
          height: MediaQuery.of(context).size.height / 4,
          width: MediaQuery.of(context).size.width / 4,
          child: Text('$data'),
 @override
 Widget build(BuildContext context) {
return container(widget.data);
 @override
 void dispose() {
super.dispose();
animationController.dispose();
class Yes extends StatefulWidget {
 @override
_YesState createState() => _YesState();
 class _YesState extends State<Yes> {
   List lst = [
[true, true, true, true],
[false, false, false, false],
[true, false, false, false],
[true, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
[false, false, false, false],
[true, false, false, false],
 ScrollController _scrollController = ScrollController();
 void initState() {
if (_scrollController.hasClients) {
  super.initState();
  // _scrollController.animateTo(0,
  //     // _scrollController.offset + MediaQuery.of(context).size.height/6,
  //     duration: Duration(seconds: 2),
  //     curve: Curves.linear);
  _scrollController.jumpTo(_scrollController.position.maxScrollExtent);
 @override
 Widget build(BuildContext context) {
    return ListView(
  controller: _scrollController,
  //  physics: NeverScrollableScrollPhysics(),
  children: [
    ListView.builder(
          // physics: NeverScrollableScrollPhysics(),
        reverse: true,
        itemCount: lst.length,
        controller: _scrollController,
        itemBuilder: (BuildContext context, int position) {
          return Stack(children: [Class(data: position, list: lst)]);
   }

  runApp(MyApp());
class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      home: ListExample(),
class ListExample extends StatelessWidget {
  ListExample({Key? key}) : super(key: key);
  final ScrollController controller = ScrollController();
  double pos = 0;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: ListView.builder(
              controller: controller,
              itemCount: 10000,
              itemBuilder: (context, index) {
                return Text('item $index');
          ElevatedButton(
              onPressed: () {
                controller.jumpTo(pos+=250);

问 Flutter ScrollController不能正常工作

Stack Overflow用户