it's possible to make listview in expand and fill the container without overflow the container, and shrink when listview is short of content without declare manual min or max height?
Code
Flexible(
fit: FlexFit.loose,
child: Container(
padding: EdgeInsets.symmetric(vertical: 20, horizontal: 10),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(kBoxRadius),
boxShadow: [kBoxShadow]),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
DText(
"Aug 2021",
size: 12,
weight: FontWeight.bold,
),
SizedBox(height: 10),
Row(
children: dates,
),
SizedBox(height: 15),
Container(
height: 1,
color: Color(0xFFE7E7E7),
),
Container(
constraints:
BoxConstraints(minHeight: 0, maxHeight: 600),
child: ListView.separated(
shrinkWrap: true,
itemBuilder: (context, index) {
return DText("Asd");
},
separatorBuilder: (_, __) {
return SizedBox(height: 10);
},
itemCount: 20,
),
)
],
),
),
)
Expectation
when the content is big
because i set manually max height.
Yes, it is possible using shrinkWrap: true. The code will be something like below,
class App extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(),
body: Center(
child: Container(
color: Colors.red,
child: ListView(
shrinkWrap: true,
children: <Widget>[
ListTile(title: Text('Apple')),
ListTile(title: Text('Orange')),
ListTile(title: Text('Banana')),
],
),
),
),
),
);
}
}
Related
I want the cards built in a listview.builder, to have a height of 150.
What currently happens:
Currently, with my code, here's what gets built. Instead of the default height, I want to explicitly set my own card height, say, 150
What I have tried:
Isn't using SizedBox enough to get the height I want in a listview?
class GamesListState extends State<GamesList> {
#override
Widget build(BuildContext context) {
return MyScaffold(
body: Container(
padding: const EdgeInsets.symmetric(vertical: 18, horizontal: 32),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const SizedBox(height: 32),
const MyHeaderTitle(title: 'Games'),
const SizedBox(height: 40),
Flexible(
child: ListView.builder(
itemCount: list.length,
prototypeItem: ListTile(
title: Text(list.first.values.first),
),
itemBuilder: (context, index) {
return Card(
elevation: 5,
child: SizedBox(
height: 150,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Image.asset('assets/images/logo.png'),
const Text(
'Game name',
style: TextStyle(
fontSize: 10, fontWeight: FontWeight.w700),
),
const Icon(Icons.keyboard_arrow_right)
],
),
),
);
},
)),
],
),
),
);
}
}
Will appreciate any insights as to what I'm doing wrong.
Specify the height of prototypeItem of listView.builder by wrapping it with SizedBox
prototypeItem: ListTile(
title: SizedBox(height: 150, child: Text(list.first.values.first)),
),
when i add container / listview in mobile resolution there is no bottom overflowed problem. (and the content can still be scrolled).enter image description here
however when i add container in chrome/desktop resolution
enter image description here
I've been looking for ways to solve this problem on the internet, such as adding
Expanded()
or
resizeToAvoidBottomPadding: false
and so on.
but still can't solve this problem.
here's my code:
`
import 'package:flutter/material.dart';
class MyDesktopBody extends StatelessWidget {
const MyDesktopBody({super.key});
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black54,
appBar: AppBar(
title: const 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: [
// Youtube Video
Padding(
padding: const EdgeInsets.all(8.0),
child: AspectRatio(
aspectRatio: 16 / 9,
child: Container(
height: 250,
color: Colors.redAccent,
),
),
),
// Comment Section & Recommended Videos
Expanded(
flex: 8,
child: ListView.builder(
shrinkWrap: true,
itemCount: 8,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
color: Colors.black54,
height: 120,
),
);
}),
)
],
),
),
// Second Column
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
width: 200,
color: Colors.black54,
),
)
],
),
),
);
}
}
`
change the first Column into a Listview and remove the second Expanded and it should work properly
import 'package:flutter/material.dart';
class MyDesktopBody extends StatelessWidget {
const MyDesktopBody({super.key});
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black54,
appBar: AppBar(
title: const Text('D E S K T O P'),
),
body: Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
children: [
// First Column
Expanded(
child: ListView( //<---- here
children: [
// Youtube Video
Padding(
padding: const EdgeInsets.all(8.0),
child: AspectRatio(
aspectRatio: 16 / 9,
child: Container(
height: 20,
color: Colors.redAccent,
),
),
),
// Comment Section & Recommended Videos
ListView.builder( //<--here
shrinkWrap: true,
itemCount: 8,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
color: Colors.black54,
height: 120,
),
);
})
],
),
),
// Second Column
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
width: 200,
color: Colors.black54,
),
)
],
),
),
);
}
}
My UI use case is similar to an Instagram user profile.
I have multiple widget on top and an infinite ListView.builder bellow with item.
I would like to scroll everything like within a ScrollView but the scrollview can not contain an infinite list.
How can I handle this situation in Flutter ?
Using CustomScrollView is the Solution
Here i have done Basic Implementation for you :
class MainBody extends StatefulWidget {
MainBody({Key key}) : super(key: key);
#override
_MainBodyState createState() => _MainBodyState();
}
class _MainBodyState extends State<MainBody> {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: CustomScrollView(
slivers: <Widget>[
SliverToBoxAdapter(
child: Container(
padding:
const EdgeInsets.symmetric(horizontal: 20, vertical: 10),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
Expanded(
child: Container(
height: 100,
width: 100,
decoration: BoxDecoration(
shape: BoxShape.circle, color: Colors.green),
child: Center(child: Text("ProfileImage")),
),
flex: 1,
),
Expanded(flex: 2, child: Text("Profile Statistics"))
],
),
Text("Bio"),
Text("Some Buttons"),
Text("Story Highlights"),
])),
),
SliverToBoxAdapter(
child: Container(
height: 150,
child: ListView.builder(
scrollDirection: Axis.horizontal,
itemCount: 10,
itemBuilder: (context, index) {
return Container(
margin: const EdgeInsets.all(10),
height: 100,
width: 100,
decoration: BoxDecoration(
shape: BoxShape.circle, color: Colors.red),
child: Center(child: Text((index + 1).toString())),
);
})),
),
SliverAppBar(
centerTitle: false,
pinned: true,
flexibleSpace: DefaultTabController(
initialIndex: 0,
length: 2,
child: TabBar(tabs: [
Center(child: Text("Icon1")),
Center(child: Text("Icon2")),
]),
),
),
SliverPadding(
padding: const EdgeInsets.all(8),
sliver: SliverList(
delegate: SliverChildBuilderDelegate(
(context, index) => Container(
height: 30,
child: Center(child: Text("Hey" + index.toString()))),
childCount: 20)),
)
],
),
);
}
}
Futher Enhancements can be done
If I drag and hold my finger down I can see a few items that are below the cutoff of the screen but as soon as I let go, it just bounces back to the top. I tried using SingleChildScrollView places, tried setting primary = true, and a bunch of other stuff that didn't help. I'm fairly new to flutter so any help would be appreciated!! Let me know if any more info is needed.
Here is my code:
import 'package:flutter/material.dart';
import 'package:drink_specials/models/restaurant.dart';
import 'package:drink_specials/screens/home/restaurant_list.dart';
class RestaurantNameTextStyle {
static TextStyle display5(BuildContext context) {
return Theme.of(context).textTheme.headline2.copyWith(color: Colors.white);
}
}
class RestaurantTypeTextStyle {
static TextStyle display5(BuildContext context) {
return Theme.of(context).textTheme.headline6.copyWith(color: Colors.white);
}
}
class RestaurantDetail extends StatelessWidget {
final Restaurant restaurant;
RestaurantDetail({Key key, #required this.restaurant}) : super(key: key);
#override
Widget build(BuildContext context) {
final topContentText = Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SizedBox(height: 100.0),
Text(
restaurant.name,
style: RestaurantNameTextStyle.display5(context),
),
SizedBox(height: 10.0),
Expanded(
flex: 6,
child: Padding(
padding: EdgeInsets.only(left: 10.0),
child: Text(
restaurant.restaurant_type,
style: RestaurantTypeTextStyle.display5(context),
))),
],
);
final topContent = Stack(
children: <Widget>[
Container(
padding: EdgeInsets.only(left: 10.0),
height: MediaQuery.of(context).size.height * 0.5,
decoration: new BoxDecoration(
image: new DecorationImage(
image: NetworkImage(restaurant.photo),
fit: BoxFit.cover,
),
)),
Container(
height: MediaQuery.of(context).size.height * 0.5,
padding: EdgeInsets.all(40.0),
width: MediaQuery.of(context).size.width,
decoration: BoxDecoration(color: Color.fromRGBO(58, 66, 86, .9)),
child: Center(
child: topContentText,
),
),
Positioned(
left: 8.0,
top: 60.0,
child: InkWell(
onTap: () {
Navigator.pop(context);
},
child: Icon(Icons.arrow_back, color: Colors.white),
),
)
],
);
final bottomContent = Container(
width: MediaQuery.of(context).size.width,
padding: EdgeInsets.all(8.0),
child: Center(
child: ListView.builder(
scrollDirection: Axis.vertical,
physics: const BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics()),
itemCount: restaurant.specials.length,
itemBuilder: (context, index) {
final item = restaurant.specials[index];
return Card(
elevation: 8.0,
margin: new EdgeInsets.symmetric(horizontal: 10.0, vertical: 6.0),
child: Container(
decoration: BoxDecoration(color: Color.fromRGBO(58, 66, 86, 1.0)),
child: ListTile(
contentPadding: EdgeInsets.symmetric(horizontal:20, vertical:10),
title: Text(item, style: TextStyle(color: Colors.white)),
)
),
);
}
),
),
);
return Scaffold(
body: Column(
children: <Widget>[
topContent,
Expanded(
child: bottomContent,
),
],
),
);
}
}
There is a ListView inside a SingleChildScrollView and both of them are scrollable. Scrolling on one of them should be disabled.
As they already explained. If you have a ListView.builder, you don't need SingleChildScrollView.
Try removing SingleChildScrollView. The code should look like this:
Scaffold(
body: Column(
children: <Widget>[
topContent,
Expanded(
child: bottomContent,
),
],
),
);
ListView already have scroll behavior so you won't need some SingleChildScrollView
I am developing a Flutter application and I want to dynamically adjust the height of the ListView.
I want the list to have a maximum height of 200. If the height is more than that, user will have to scroll to reach the bottom. If height is below 200, it will take only as much space as needed.
Preview of application: Screenshot. As you can see Restaurants nearby is pushed to the very bottom of the page. I want the ListView to only take height of 200 or less so that the content below isn't pushed to the bottom.
Here is my current code:
#override
Widget build(BuildContext context) {
return Container(
padding: EdgeInsets.all(10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
'Restaurants nearby',
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
),
),
Divider(),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Text('Enter restaurant manually'),
onPressed: () {
print('Button pressed');
},
),
],
),
Flexible(
child: ListView.builder(
itemBuilder: (BuildContext context, int index) {
return ListTile(
leading: CircleAvatar(
backgroundColor: Colors.cyan,
),
title: Text('Test restaurant'),
subtitle: Text('80m'),
);
},
itemCount: 15,
),
),
Text(
'Restaurants nearby',
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
),
),
],
),
);
}
You are using Flexible widget, that's why your ListView expands. You have to change Flexible to ConstrainedBox and add shrinkWrap: true to your ListView.
ConstrainedBox(
constraints: BoxConstraints(maxHeight: 200, minHeight: 56.0),
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (BuildContext context, int index) {
return ListTile(
leading: CircleAvatar(
backgroundColor: Colors.cyan,
),
title: Text('Test restaurant'),
subtitle: Text('80m'),
);
},
itemCount: 15,
),
),
More info here: https://api.flutter.dev/flutter/widgets/ConstrainedBox-class.html
You can use LimitedBox
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(...),
Divider(),
Row(...),
LimitedBox(
maxHeight: 200.0,
child: ListView.builder(...),
),
Text(...),
],
),
Recommended solution in case when the incoming constraints are unbounded
Consider wrapping the ListView into this
LimitedBox(
maxHeight: 200,
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Flexible(
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (BuildContext context, int index) {
return ListTile(
leading: CircleAvatar(
backgroundColor: Colors.cyan,
),
title: Text('Test restaurant'),
subtitle: Text('80m'),
);
},
itemCount: _itemsCount,
),
),
]
)
),
Note that:
shrinkWrap of ListView is set to true
mainAxisSize of Column is set to MainAxisSize.min
maxHeight of LimitedBox is set to 200
A complete snippet:
import 'package:flutter/material.dart';
class DebugWidget extends StatefulWidget {
#override
_DebugWidgetState createState() => _DebugWidgetState();
}
class _DebugWidgetState extends State<DebugWidget> {
int _itemsCount = 1;
#override
Widget build(BuildContext context) {
Widget child = Container(
padding: EdgeInsets.all(10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
'Restaurants nearby',
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
),
),
Divider(),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Text('Enter restaurant manually'),
onPressed: () {
print('Button pressed');
},
),
RaisedButton(
child: Text('+1'),
onPressed: () {
setState(() {
_itemsCount += 1;
});
},
),
RaisedButton(
child: Text('-1'),
onPressed: () {
setState(() {
_itemsCount -= 1;
});
},
),
],
),
LimitedBox(
maxHeight: 200,
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Flexible(
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (BuildContext context, int index) {
return ListTile(
leading: CircleAvatar(
backgroundColor: Colors.cyan,
),
title: Text('Test restaurant'),
subtitle: Text('80m'),
);
},
itemCount: _itemsCount,
),
),
]
)
),
Text(
'Restaurants nearby',
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
),
),
],
),
);
return Scaffold(
body: child,
);
}
}
I found a solution to this problem. you should wrap your ListView with LimittedBox or ConstraintBox and give them maxHeight and set shrinkWrap property of ListView to true. the solution would be something like this.
LimitedBox(
maxHeight: 200,
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (BuildContext context, int index) {
return ListTile(
leading: CircleAvatar(
backgroundColor: Colors.cyan,
),
title: Text('Test restaurant'),
subtitle: Text('80m'),
);
},
itemCount: 15,
),
),
I see that this question has never been answered only with giving a fixed height, so here is what works for me.
For some reason if you set the shrinkwrap to true it doesn't look like it is working but it does, the problem is in the padding settings of the ListView, set the padding to edgeinstets.zero. That fixes it for me.
Wrap inside a Flexible
ShrinkWrap true
Padding, zero
and if needed the column to MainAxisSize.min.
Hope it helps some people.
Example of my code:
Flexible(
child: Container(
decoration: BStyles.cardDecoration1,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
const Text(
'PRODUCTION TASKS',
),
const SizedBox(
height: textVerticalSpacing,
),
Flexible(
child: ListView.builder(
itemCount: recentTasks.length,
padding: EdgeInsets.zero,
physics: const NeverScrollableScrollPhysics(),
shrinkWrap: true,
itemBuilder: (BuildContext context, int index) {
return TaskCard(
task: recentTasks[index],
widthInfo: MediaQuery.of(context).size.width * 0.6,
);
},
),
),
const SizedBox(
height: itemSpacing,
),
Align(
alignment: Alignment.centerRight,
child: InkWell(
onTap: () { },
child: const Text(
'View more',
),
),
),
const SizedBox(
height: textVerticalSpacing,
),
],
),
),
),
),
ConstrainedBox(
constraints: BoxConstraints(maxHeight: 200.0),
child: [your child here],
)
This make your child's height not bigger than 200.0
You can always size the ListView container as % of the viewport (assuming of course that the other widgets also are sized in the same manner):
return Container(
height: MediaQuery.of(context).size.height * 0.75,
child: ListView.builder(
itemBuilder: (ctx, index) {
return Card(...