How to wrap "AspectRatio" widget to avoid yellow/black overflow line? - flutter

Question

This is my code(The complete project code : https://github.com/mitchkoko/responsivedesign):
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
class MyDesktopBody extends StatelessWidget {
const MyDesktopBody({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.deepPurple[200],
appBar: AppBar(
title: Text('D E S K T O P'),
),
body: Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
children: [
// First column
Expanded(
child: Column(
children: [
// videoplayer section
AspectRatio(
aspectRatio: 16/9,
child: Container(
color: Colors.deepPurple[400],
),
),
// comment section
Expanded(
child: ListView.builder(
itemCount: 8,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
color: Colors.deepPurple[300],
height: 120,
),
);
},
),
)
],
),
),
// second column
Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
width: 200,
color: Colors.deepPurple[300],
),
),
)
],
),
),
);
}
}
When I extend the window size or decrease the window height I get the following error message:
════════ Exception caught by rendering library
═════════════════════════════════ The following assertion was thrown
during layout: A RenderFlex overflowed by 5.1 pixels on the bottom.
The relevant error-causing widget was Column
lib\responsive\desktop_body.dart:20 You can inspect this widget using
the 'Inspect Widget' button in the VS Code notification. The
overflowing RenderFlex has an orientation of Axis.vertical. The edge
of the RenderFlex that is overflowing has been marked in the rendering
with a yellow and black striped pattern. This is usually caused by the
contents being too big for the RenderFlex.
Consider applying a flex factor (e.g. using an Expanded widget) to
force the children of the RenderFlex to fit within the available space
instead of being sized to their natural size. This is considered an
error condition because it indicates that there is content that cannot
be seen. If the content is legitimately bigger than the available
space, consider clipping it with a ClipRect widget before putting it
in the flex, or using a scrollable container rather than a Flex, like
a ListView.
The specific RenderFlex in question is: RenderFlex#cd135
relayoutBoundary=up7 OVERFLOWING
════════════════════════════════════════════════════════════════════════════════
I think the problem is the AspectRatio widget in videoplayer section. I don't know how to wrap this widget to prevent this error happening but when I comment out that part of the code, I will no longer get the error.

Answer 1

Yes the issue rise from AspectRatio on youtube player section when it tries to fill height based on width on small height with large width. You can wrap with ConstrainedBox to solve this issue.
body: LayoutBuilder(
builder: (context, constraints) => Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
children: [
// First column
Expanded(
child: Column(
children: [
// videoplayer section
ConstrainedBox(
constraints: BoxConstraints(
maxHeight: constraints.maxHeight - 16,
),
child: AspectRatio(
aspectRatio: 16 / 9,
Full widget
class MyDesktopBody extends StatelessWidget {
const MyDesktopBody({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.deepPurple[200],
appBar: AppBar(
title: Text('D E S K T O P'),
),
body: LayoutBuilder(
builder: (context, constraints) => Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
children: [
// First column
Expanded(
child: Column(
children: [
// videoplayer section
ConstrainedBox(
constraints: BoxConstraints(
maxHeight: constraints.maxHeight - 16,
),
child: AspectRatio(
aspectRatio: 16 / 9,
child: Container(
color: Colors.deepPurple[400],
),
),
),
// comment section
Expanded(
child: ListView.builder(
itemCount: 8,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
color: Colors.deepPurple[300],
height: 120,
),
);
},
),
)
],
),
),
// second column
Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
width: 200,
color: Colors.deepPurple[300],
),
),
)
],
),
),
),
);
}
}