implementing nested ListView inside SingleChildScrollView - flutter

Question

in this sample code i want to put nested ListView inside SingleChildScrollView, but i get this error:
RenderBox was not laid out: RenderRepaintBoundary#8de00 relayoutBoundary=up1 NEEDS-PAINT
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
my code:
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'test',
home: Scaffold(
appBar: AppBar(
title: Text("Scrollview Demo"),
),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
Container(
height: 50.0,
color: Colors.green,
child: Center(
child: Text('message'),
),
),
Expanded(
child: ListView.builder(
itemCount: 30,
itemBuilder: (context, index) {
return ListTile(title: Text("Index : $index"));
},
),
),
],
),
),
),
);
}
}

Answer 1

In ListView you can set
shrinkWrap: true
so that ListView only occupies the space it needed.
To disable the scrolling on ListView so it uses that of SingleChildScrollView you can set the
physics: NeverScrollableScrollPhysics().
You need to remove the Expanded which set the child to take the available screen in case of here is infinite.
Here:
SingleChildScrollView(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
height: 50.0,
color: Colors.green,
child: Center(
child: Text('message'),
),
),
Flexible(
child: ListView.builder(
itemCount: 30,
shrinkWrap: true,
itemBuilder: (context, index) {
return ListTile(title: Text("Index : $index"));
},
),
),
],
),
)

Answer 2

Instead of using SingleChildScrollView then use Column as the child just use ListView.
return Scaffold(
body: ListView(
children: <Widget>[
Container(
height: 104,
child: Card(
clipBehavior: Clip.antiAliasWithSaveLayer,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8.0),
),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[],
),
),
),
ListView(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
),
],
),
);

Answer 3

Ones I was in the same situation and did like that:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'test',
home: Scaffold(
appBar: AppBar(
title: Text("Scrollview Demo"),
),
body: ListView.builder(
itemCount: 30 + 1,
itemBuilder: (context, index) {
if (index == 0) {
return Container(
height: 50.0,
color: Colors.green,
child: Center(
child: Text('message'),
),
);
}
return ListTile(title: Text('Index : ${index -1}'));
},
),
),
);
}
}