Flutter Column inside SingleChildScrollView doesn't scroll - flutter

When I try to use Card inside SingleScrollChildView, I get this error:
The following assertion was thrown during layout:
A RenderFlex overflowed by 178 pixels on the bottom.
The relevant error-causing widget was:
Column file:///C:/Users/emirs/AndroidStudioProjects/view_met/lib/home.dart:197:16
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#d861f relayoutBoundary=up2 OVERFLOWING
... needs compositing
... parentData: offset=Offset(0.0, 0.0) (can use size)
... constraints: BoxConstraints(0.0<=w<=411.4, 0.0<=h<=820.6)
... size: Size(411.4, 820.6)
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤
This is my code:
Padding(
padding: EdgeInsets.fromLTRB(0, 20, 0, 0),
child: Column(
children: <Widget>[
Text("Random Items You Could Like", style: GoogleFonts.merriweather(fontSize: 18, color: Colors.black)),
SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Column(
children: <Widget>[
builder(randint1.toString()),
builder(randint2.toString()),
builder(randint3.toString()),
builder(randint4.toString()),
builder(randint5.toString()),
],
)
),
],
),
)
This is the builder() function:
builder(String id) {
return FutureBuilder(
future: fetchData(id),
builder: (BuildContext context, snapshot) {
if (snapshot.connectionState == ConnectionState.waiting) {
return Padding(
padding: EdgeInsets.fromLTRB(0, 20, 0, 0),
child: CircularProgressIndicator(),
);
}
var data = jsonDecode(snapshot.data.toString());
var leading;
var artist;
if (data["primaryImageSmall"] == "") {
leading = Icon(Icons.dangerous);
}
else {
leading = Image.network(data["primaryImageSmall"]);
}
if (data["artistDisplayName"]== "") {
artist = "Unknown";
}
else {
artist = data["artistDisplayName"];
}
return Card(
clipBehavior: Clip.antiAlias,
child: Column(
children: [
ListTile(
leading: leading,
title: Text(data["title"]),
subtitle: Text(
"by $artist",
style: TextStyle(color: Colors.black.withOpacity(0.6)),
),
),
ButtonBar(
alignment: MainAxisAlignment.start,
children: [
TextButton(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => DetailsPage()),
);
},
child: Text("Details", style: TextStyle(color: Color(0xFF6200EE))),
),
TextButton(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => DetailsPage()),
);
},
child: Text("Add to Favorites", style: TextStyle(color: Color(0xFF6200EE))),
),
],
),
],
),
);
},
);
}
This is the result:
I looked at other questions too but none of them actually helped and they didn't have the answer I was looking for. I really don't know what do to at this moment. I would appreciate any type of help. I can give more information if required.

Wrap the SingleChildScrollView with Expanded.
Column(
children: [
// ...
Expanded(
child: SingleChildScrollView(),
),
],
),

I think that you are using the SingleChildScrollView wrongly, remove the SingleChildScrollView and scrollDirection; use it to wrap this part:
Column(
children: <Widget>[
builder(randint1.toString()),
builder(randint2.toString()),
builder(randint3.toString()),
builder(randint4.toString()),
builder(randint5.toString()),
],
and it would look like this:
SingleChildScrollView(
scrollDirection: Axis.vertical,
Column(
children: <Widget>[
builder(randint1.toString()),
builder(randint2.toString()),
builder(randint3.toString()),
builder(randint4.toString()),
builder(randint5.toString()),
],
),

Try Out below Code
Padding(
padding: EdgeInsets.fromLTRB(0, 20, 0, 0),
child: Stack(
children: [
Align(
alignment:Alignment.topCenter,
child: Text("Random Items You Could Like", style: GoogleFonts.merriweather(fontSize: 18, color: Colors.black))),
SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Column(
children: <Widget>[
Column(
children: <Widget>[
builder(randint1.toString()),
builder(randint2.toString()),
builder(randint3.toString()),
builder(randint4.toString()),
builder(randint5.toString()),
],
),
],
),
),
],
),
)

Related

Cannot put PageView into Column in Flutter

I want to put a small PageView into a Column, but I got error RenderBox was not laid out: RenderRepaintBoundary#db5f8 relayoutBoundary=up14 NEEDS-PAINT. The PageView will hold inconsistent data so I cannot set the height for it. Can anyone help me? This is my code:
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
bottomNavigationBar: BottomAppBar(
child: Container(
height: 70,
color: Colors.white,
),
),
body: FutureBuilder(
future: Data.getProductDetails(id: widget.product.id),
builder: (context, AsyncSnapshot snapshot) {
if (!snapshot.hasData) {
return Center(child: CircularProgressIndicator(color: Colors.grey));
} else {
List iList = [];
iList.add(widget.product.mainImg);
for (ProductImages i in snapshot.data.imgList) {
iList.add(i.image);
}
return CustomScrollView(
slivers: [
SliverAppBar(...),
SliverToBoxAdapter(
child: SingleChildScrollView(
padding: EdgeInsets.all(15),
child: Column(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(...),
Row(...),
SizedBox(height: 10),
brandField(snapshot),
SizedBox(height: 5),
categoryField(snapshot),
SizedBox(height: 5),
tagsField(snapshot),
SizedBox(height: 20),
pageIndicator(),
Expanded(
child: PageView(
children: [
Container(height: 400, color: Colors.red),
Container(height: 600, color: Colors.blue),
],
),
)
],
),
),
),
],
);
}
},
),
);
}
You get this error because PageView and other widgets like ListView require size constraints from its parents and Column do not provide constraints to its children. So to solve the issue you can wrap you PageView inside Flexible or Expanded like so:
Column(
children:[
Expanded(child:PageView(),),
]
)
For better understanding of constrains in flutter, read: Understanding Constrains: Flutter.dev

How do I fix 'RenderFlex overflowed by 283 pixels on the bottom' in flutter?

The error occurs in a screen where I am trying to render a list of contributions. I have tried a number of things (listed below), none of which works.
Wrapping my column widget with Expanded()
Wrapping my Column widget with Flexible()
Wrapping my Listview.builder() with SingleScrollView() then adding physics: NeverScrollableScrollPhysics() in it.enter image description here
I have a contributions screen with contains a Lisview.builder()
This is my contributions screen
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('My Chamas'),
centerTitle: true,
),
floatingActionButton: CustomFloatingActionButton(
buttonLabel: 'Contribute +',
),
resizeToAvoidBottomInset: false,
body: Column(
children: <Widget>[
Container(
height: MediaQuery.of(context).size.height * 0.22,
margin: EdgeInsets.only(top: 20),
child: PageView.builder(
itemCount: widget.availableChamas.length, // number of cards
controller: PageController(viewportFraction: 0.8),
onPageChanged: (int index) => setState(() => _index = index),
/*** Begin snapping chama cards */
itemBuilder: (_, i) {
return Transform.scale(
scale: i == _index ? 1 : 0.9,
child: Card(
elevation: 6,
margin: EdgeInsets.only(right: 0),
color: Theme.of(context).primaryColor, // Card backgound color
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(25)),
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(25),
gradient: LinearGradient(
begin: Alignment.topRight,
end: Alignment.bottomLeft,
stops: [0.1, 0.9],
colors: [Colors.indigo, Colors.teal],
),
),
child: ChamaCard(
id: widget.availableChamas[i].id,
name: widget.availableChamas[i].name,
totalMembers: widget.availableChamas[i].totalMembers,
totalContributions: widget.availableChamas[i].totalContributions,
),
),
),
);
/*** End snapping chama cards */
},
),
),
SizedBox(height: 15),
Container(
padding: EdgeInsets.only(right: 15, left: 15),
child: Column(
children: [
Row(
mainAxisAlignment: MainAxisAlignment.end,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Text(
'All my chamas',
style: TextStyle(fontSize: 15, color: Colors.red[900]),
),
Icon(
Icons.arrow_forward,
size: 17,
color: Colors.red[900],
)
],
),
SizedBox(height: 15),
Row(
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text('My', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20)),
Row(
crossAxisAlignment: CrossAxisAlignment.end,
children: <Widget>[
Text(
'Contributions',
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20),
),
SizedBox(width: 5),
Text(
'to this chama',
style: TextStyle(color: Colors.green[800]),
)
],
),
],
)
],
),
SizedBox(height: 10),
ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
itemBuilder: (context, index) {
return ChamaListItem(
id: widget.availableContributions[index].id,
amount: widget.availableContributions[index].amount,
contributionDate: widget.availableContributions[index].contributionDate,
);
},
itemCount: widget.availableContributions.length,
),
],
),
)
],
),
);
}
This is my ChamaListItem widget which simply holds a single contribution card. This is what I am iterating to build a scrollable list in my Listview.builder()
Widget build(BuildContext context) {
return Card(
elevation: 4,
shadowColor: Color.fromRGBO(255, 255, 255, 0.5),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(15)),
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.end,
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
'Date',
style: TextStyle(fontWeight: FontWeight.bold),
),
SizedBox(height: 5),
Text(
'$contributionDate',
style: TextStyle(color: Colors.red[900]),
)
],
),
Row(
crossAxisAlignment: CrossAxisAlignment.end,
children: <Widget>[
Text('Kes'),
SizedBox(width: 1),
Text(
'$amount',
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 30),
),
],
)
],
),
),
);
}
This is the error thrown in the console
Performing hot reload...
Syncing files to device sdk gphone x86 arm...
Reloaded 5 of 566 libraries in 1,183ms.
======== Exception caught by rendering library =====================================================
The following assertion was thrown during layout:
A RenderFlex overflowed by 283 pixels on the bottom.
The relevant error-causing widget was:
Column file:///Users/Steve/StudioProjects/m_chama/lib/screens/myChamas.dart:35:13
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#3a382 relayoutBoundary=up1 OVERFLOWING
... needs compositing
... parentData: offset=Offset(0.0, 105.5); id=_ScaffoldSlot.body (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=697.5)
... size: Size(392.7, 697.5)
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
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====================================================================================================
Wrap Column widget with SingleChiledScrollView

I can not create a SingleChildScrollView screen on Flutter

I was trying to create a scrollable screen, not the widgets inside but the whole screen on Flutter but I get some errors like below:
======== Exception caught by rendering library ===================================================== RenderBox was not laid out: RenderFlex#f643b relayoutBoundary=up13 NEEDS-PAINT
NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart': Failed assertion: line 1920
pos 12: 'hasSize' The relevant error-causing widget was:
SingleChildScrollView
Here is the code of one of the shown widgets:
var _settingsPage = StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Scaffold(
body: Row(
children: [
Flexible(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Row(
children: [
FloatingActionButton(
child: Icon(Icons.casino),
onPressed: changeHome,
),
],
),
Flexible(
fit: FlexFit.loose,
child: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Text(
_helpString,
textAlign: TextAlign.center,
),
),
),
Container(
alignment: Alignment.center,
padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Text('Is your character epic?'),
Checkbox(
value: _epic,
onChanged: (bool epic) {
setState(
() {
_epic = epic;
},
);
},
),
],
),
),
],
),
),
],
),
),
],
),
);
},
);
Try wrapping your SingleChildScrollView in a SizedBox with a defined height and width.
This will make sure your view is constructed to a defined space
To set SizedBox height to screen height you can use media query like
MediaQuery.of(context).size.height and you can replace height with width to set the widget size to your screen width
If issue still persists feel free to comment
Regards,
Rachan

A RenderFlex overflowed by 19 pixels on the bottom, while scrolling

In TabBarView -> Column, Iam getting this exception A RenderFlex overflowed by 120 pixels on the bottom.
while scrolling, It happens only on the particular part/container: TabBarView -> Column -> Container.
here is an image for better understanding sample image
here is the code for tabView.dart:
class TabView extends StatelessWidget {
List<Category> categories = [
];
final TabController tabController;
TabView({Key key, this.tabController}) : super(key: key);
#override
Widget build(BuildContext context) {
print(MediaQuery.of(context).size.height / 9);
return TabBarView(
physics: NeverScrollableScrollPhysics(),
controller: tabController,
children: <Widget>[
Column( **//Exception here**
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Container(
margin: EdgeInsets.all(8.0),
height: MediaQuery.of(context).size.height/9,
width: MediaQuery.of(context).size.width,
// padding: EdgeInsets.only(top: 4.0),
child: ListView.builder(
//shrinkWrap: true,
scrollDirection: Axis.horizontal,
itemCount: categories.length,
itemBuilder: (_, index) => CategoryCard(
category: categories[index],
)),),
SizedBox(
height: 16.0,
),
Flexible(child: RecommendedList()),
],
),
Column(children: <Widget>[
SizedBox(
height: 16.0,
),
Flexible(child: RecommendedList())
]),
Column(children: <Widget>[
SizedBox(
height: 16.0,
),
Flexible(child: RecommendedList())
]),
Column(children: <Widget>[
SizedBox(
height: 16.0,
),
Flexible(child: RecommendedList())
]),
Column(children: <Widget>[
SizedBox(
height: 16.0,
),
Flexible(child: RecommendedList())
]),
]);
}
}
code for recommendedList.dart:
class RecommendedList extends StatelessWidget {
List<Product> products = [....];
#override
Widget build(BuildContext context) {
return Column( **//Exception here**
children: <Widget>[
Container(
height: 20,
child: Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
IntrinsicHeight(
child: Container(
margin: const EdgeInsets.only(left: 16.0, right: 8.0),
width: 4,
color: Colors.lightBlue,
),
),
Center(
child: Text(
'Recommended',
style: TextStyle(
color: darkGrey,
fontSize: 16.0,
fontWeight: FontWeight.bold),
)),
],
),
),
Flexible(
child: Container(),
),//
],
);
}
}
These 2 classes are used in main page, here is the code:
return Scaffold(
resizeToAvoidBottomPadding: false,
bottomNavigationBar: CustomBottomBar(controller: bottomTabController),
body: CustomPaint(
painter: MainBackground(),
child: TabBarView(
controller: bottomTabController,
physics: NeverScrollableScrollPhysics(),
children: <Widget>[
SafeArea(
child: NestedScrollView(
headerSliverBuilder:
(BuildContext context, bool innerBoxIsScrolled) {
// These are the slivers that show up in the "outer" scroll view.
return <Widget>[
SliverToBoxAdapter(
child: appBar,
),
SliverToBoxAdapter(
child: topHeader, //child: ParallaxMain(),
),
SliverToBoxAdapter(
child: ProductList(
products: products,
),
),
SliverToBoxAdapter(
child: ProductList2(),
),
SliverToBoxAdapter(
child: tabBar,
),
];
},
body: Container(
child: TabView(
tabController: tabController,
),
//: MediaQuery.of(context).size.height/10,
),
),
),
CategoryListPage(),
CheckOutPage(),
ProfilePage()
],
),
),
);
and here is the exception i got:
A RenderFlex overflowed by 104 pixels on the bottom.
The relevant error-causing widget was:
Column file:///E:/arm%20dataset/flutter_ecommerce_template-m/lib/screens/main/components/tab_view.dart:59:11
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#7b505 OVERFLOWING
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(w=411.4, h=13.1)
... size: Size(411.4, 13.1)
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: min
... crossAxisAlignment: center
... verticalDirection: down
◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (2) Exception caught by rendering library ═════════════════════════════════════════════════
A RenderFlex overflowed by 19 pixels on the bottom.
The relevant error-causing widget was:
Column file:///E:/arm%20dataset/flutter_ecommerce_template-m/lib/screens/main/components/recommended_list.dart:37:12
════════════════════════════════════════════════════════════════════════════════════════════════════
Please help me out.
Use ListView instead of Column should help.
Did you try using wrapping your Column with SingleChildScrollView widget like this?
SingleChildScrollView(
child: Column(
children: <Widget>[
Wrapping the Column widget with SingleChildScrollview should work.. Let me know if it worked for you..

Can't set ListView into LayoutBuilder Widget (Flutter)

I need to have some structure like this
I use LayoutBuilder to get the height of content (between App Bar and TabsBottomNavigation). Here i build Profile Info Container and want to build ListView with some List Tiles, but when I try to build it in Layout Builder I have errors in console.
If I create ListView out of LayoutBuilder it works!
Please help me to solve it.
My code below:
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints viewportConstraints) {
return SingleChildScrollView(
child: Container(
child: Column(
children: <Widget>[
Container(
height: viewportConstraints.maxHeight * .44,
color: Theme.of(context).primaryColor,
padding: EdgeInsets.only(bottom: 2),
child: Align(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_buildProfileImage(context),
SizedBox(height: 17),
Text(userName)
],
),
),
),
Expanded(
child: ListView(
children: <Widget>[
ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
)
],
),
)
],
),
),
);
},
);
}
Use below build method will work in your case. (I have checked and it's working, so I hope it will work in your case also and will fit in your requirement.)
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints viewportConstraints) {
return Container(
child: Column(
children: <Widget>[
Container(
height: viewportConstraints.maxHeight * .44,
color: Theme.of(context).primaryColor,
padding: EdgeInsets.only(bottom: 2),
child: Align(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_buildProfileImage(context),
SizedBox(height: 17),
Text(userName),
],
),
),
),
SizedBox(height: 16),
Flexible(
child: ListView(
children: <Widget>[
Card(
child: ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
),
),
],
),
),
],
),
);
},
);
}
I think SingleChildScrollView is of no use in this case so I removed it but you can use it if you fill so.
You still need to do some UI improvement as per your wish as this is the basic structure as per your requirement.
Hope this will help you.
You are using the LayoutBuilder in a wrong way.
It's supposed to be used to change the layout with the size of the device and/or orientation.
What you are trying to do is best accomplished with MediaQuery:
MediaQuery.of(context).padding.top //APP bar height
MediaQuery.of(context).padding.bottom //Bottom bar height
MediaQuery.of(context).size.height //Screen height
Widget build(BuildContext context) {
return Column(
children:<Widget>[
Expanded(
child:LayoutBuilder(
builder: (BuildContext context, BoxConstraints viewportConstraints) {
return SingleChildScrollView(
child: Container(
child: Column(
children: <Widget>[
Container(
height: viewportConstraints.maxHeight * .44,
color: Theme.of(context).primaryColor,
padding: EdgeInsets.only(bottom: 2),
child: Align(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_buildProfileImage(context),
SizedBox(height: 17),
Text(userName)
],
),
),
),
Expanded(
child: ListView(
children: <Widget>[
ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
)
],
),
)
],
),
),
);
},
),
),
]
);
}
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints viewportConstraints) {
return SingleChildScrollView(
child: ListView(
shrinkWrap: true,
children: <Widget>[
new Container(
height: MediaQuery.of(context).size.height/3,
color: Theme.of(context).primaryColor,
padding: EdgeInsets.only(bottom: 2),
child: Align(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_buildProfileImage(context),
SizedBox(height: 17),
Text(userName)
],
),
),
),
new ListView(
shrinkWrap: true,
children: <Widget>[
ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
)
],
)
],
),
);
},
);
}
If you read the error log, it says non-zero flex incoming but constraints are unbounded. To understand that clearly, imagine Flutter is trying to draw pixels of something that not finite. That's the our problem.
Widgets like ListView or SingleChildScrollView are flex widgets and has no limits unlike Column or Row.
If you have children that sizes are not definite, then you have to define flex for your ListView. For that, you can use shrinkWrap or Flexible, Expanded widgets for both ListView itself or children.
And here is the my solution, simplified as much as possible:
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints viewportConstraints) {
return ListView(
shrinkWrap: true, // That's it
children: <Widget>[
Container(
color: Theme.of(context).primaryColor,
height: viewportConstraints.maxHeight * .44,
padding: EdgeInsets.only(bottom: 2),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_buildProfileImage(context),
SizedBox(height: 17),
Text(userName)
],
),
),
ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
),
ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
),
ListTile(
leading: Icon(Icons.print),
title: Text('asdad'),
)
],
);
},
);
}
Meanwhile, you have too many children that does nothing. If you want different scrolling behavior inside the Profile Info and ListTiles parts, tell me because we will must create yet another ListView for achieve that.
Also if you share your buildProfileImage widget, we can optimize your code even further, because you may even not need the LayoutBuilder widget in this case.