如何防止小部件滚动

Question

如何防止第一个小部件(ListView(滚动？

这个想法是滚动SomeList，但最顶部的ListView小部件应该保持不可折叠。

body: ListView(
children: <Widget>[
ListView(
shrinkWrap: true,
children: <Widget>[
ListTile( // how to prevet this widget from beeing scrolled?
title: Container(
height: 30,
child: Row(...),
),
),
],
),
SomeList(), // builds ListView.separated( ...
],
),

更新：

import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(title: 'Flutter Demo', home: MyListView());
}
}
class MyListView extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('AppBar'),
),
body: ListView(
children: <Widget>[
ListView(
physics: const NeverScrollableScrollPhysics(),
shrinkWrap: true,
children: <Widget>[
ListTile(
title: Container(
height: 30,
color: Colors.black45,
child: Row(
children: const <Widget>[
Expanded(child: Text('Some header')),
],
),
),
),
],
),
RapportList(),
],
),
);
}
}
class RapportList extends StatefulWidget {
@override
_RapportListState createState() => _RapportListState();
}
class _RapportListState extends State<RapportList> {
@override
Widget build(BuildContext context) {
return ListView.separated(
physics: const ScrollPhysics(),
shrinkWrap: true,
itemCount: 100,
itemBuilder: (context, index) {
return ListTile(
title: Row(
children: <Widget>[
Expanded(child: Text('$index')),
],
),
);
},
separatorBuilder: (context, index) {
return const Divider();
},
);
}
}

Answer 1

解决方案是使用ExpendedWidget，也使用physics: NeverScrollableScrollPhysics(),。这是完整的代码：

class MyListView extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('AppBar'),
),
body: Container(
height: MediaQuery.of(context).size.height,
child: Column(
children: <Widget>[
Expanded(
flex:1,
child: ListView(
physics: const NeverScrollableScrollPhysics(),
shrinkWrap: true,
children: <Widget>[
ListTile(
title: Container(
height: 30,
color: Colors.black45,
child: Row(
children: const <Widget>[
Expanded(child: Text('Some header')),
],
),
),
),
],
),
),
Expanded(flex:9,child: RapportList()),
],
),
),
);
}
}

Answer 2

在Listview中使用physics:const NeverScrollableScrollPhysics((然后可以防止小部件滚动。