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)),
),
I have a problem with ListView. I need to make it scrollable and set its size to max space it can take. Below listView I have a button that should be visible, but the ListView covers it.
I tried solutions from similar topics:
put ListView into SingleChildScrollView
make ListView Expanded
So the problem is:
how to make this listView scrollable?
how can I set its size to max as it can take (I mean it should be between 'List of participants' and Leave button)
how can I attach this button to be always on the bottom of screen, no matter what size of screen I have?
I hope pictures help you to understand what I mean. I also add the code but it is formatted weird, so sorry about that.
Screenshoot from device with above problem:
How it looks on another device and how it should look:
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomInset: false,
appBar: AppBar(
title: const Text('Flutter SDK'),
centerTitle: true),
body: Padding(
padding: const EdgeInsets.all(16),
child: !isInitializedList
? Column(
children: [
TextField(
controller: usernameController,
readOnly: true),
const SizedBox(height: 12),
TextField(
decoration: const InputDecoration(hintText: 'Conference name'),
controller: conferenceNameController),
const SizedBox(height: 12),
ElevatedButton(
onPressed: () async {
// Step 5: Call joinConference()
await joinConference();
},
child: isJoining
? const Text('Joining...')
: const Text('Join the conference')),
const Divider(thickness: 2),
const Text("Join the conference to see the list of participants.")
],
)
: Column(
children: [
Text(
'Conference name: ${conferenceNameController.text}',
style: const TextStyle(fontWeight: FontWeight.w400, fontSize: 16)),
const SizedBox(height: 16),
Column(
children: [
const Align(
alignment: Alignment.centerLeft,
child: Text(
'List of participants:',
style: TextStyle(color: Colors.blue, fontWeight: FontWeight.w600))),
const SizedBox(height: 16),
// Step 7: Display the list of participants
ListView.separated(
separatorBuilder: (BuildContext context, int index) {
return const SizedBox(height: 5);
},
shrinkWrap: true,
itemCount: participants.length,
itemBuilder: (context, index) {
var participant = participants[index];
return Padding(
padding: const EdgeInsets.all(4),
child: Row(children: [
Expanded(
flex: 1,
child: SizedBox(
height: 150,
width: 150,
child: VideoView.withMediaStream(
participant: participant,
mediaStream: participant.streams?.firstWhereOrNull((s) =>
s.type == MediaStreamType.camera),
key: ValueKey('video_view_tile_${participant.id}'))),
),
Expanded(
flex: 1,
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Column(
mainAxisAlignment:
MainAxisAlignment.center,
children: [
Text(
"${participant.info?.name.toString()}"),
Text(
"status: ${participant.status?.name}")
]),
),
)
]),
);
}),
]),
const SizedBox(height: 16),
ElevatedButton(
style: ElevatedButton.styleFrom(primary: Colors.red),
onPressed: () async {
// Step 6: Call leaveConference()
await leaveConference();
},
child: isJoining
? const Text('Leaving...')
: const Text('Leave the conference'))
])
)
);
}
When you want to make list view expand as much as available, you need to wrap it with Expanded widget, by that you tell to column give it space as much as you have, also you need to do this for inside column agin, like this:
Column(
children: [
Text('Conference name: ${conferenceNameController.text}',
style: const TextStyle(fontWeight: FontWeight.w400, fontSize: 16)),
const SizedBox(height: 16),
Expanded(// <--- add this
child: Column(
children: [
const Align(
alignment: Alignment.centerLeft,
child: Text('List of participants:',
style: TextStyle(
color: Colors.blue,
fontWeight: FontWeight.w600))),
const SizedBox(height: 16),
Expanded( // <--- add this
child: ListView.separated(
separatorBuilder:
...
)
You can make listview scrollable with shrinkwrap parameter inside Listview.builder()
I'm using columns to display 2 texts. 1st text represents the title and 2nd text displays the quotation. I'm trying to split the quotation text into multi-lines using the max line's property, but the text is overlapping with other items. I try to use Expanded and flexible property to overcome this issue but still, I didn't get desired output. This is what I'm trying to do:
Container(
color: Color(0xff1D1D1D),
width: double.maxFinite,
height: responsivness.safeBlockVertical! * 54.55,
// Stories Title
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: Text("Stories",
style: Theme.of(context).textTheme.headline1!),
),
// list of Stories
Expanded(
child: ListView.builder(
itemCount: 5,
shrinkWrap: true,
scrollDirection: Axis.horizontal,
itemBuilder: (context, index) {
return Stack(
clipBehavior: Clip.none,
children: [
Padding(
padding: EdgeInsets.all(h * .014),
child: Container(
width:
responsivness.safeBlockHorizontal! *
47,
height:
responsivness.safeBlockVertical! *
17,
decoration: BoxDecoration(
borderRadius:
BorderRadius.circular(10),
color: Colors.amber,
),
),
),
Positioned(
top: h * .19,
left: h * .016,
child: Column(
mainAxisAlignment:
MainAxisAlignment.start,
crossAxisAlignment:
CrossAxisAlignment.start,
children: [
Text(
"Steve H.",
style: Theme.of(context)
.textTheme
.headline1!,
),
Text(
"I bet away my house and all the money i got",
style: Theme.of(context)
.textTheme
.bodyText2!,
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
],
),
),
],
);
},
),
),
],
),
),
Try below code hope its helpful to you. I think the problem comes from Stack widget so remove your Stack and Positioned Widget, and used Column() widget instead.
Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: Text("Stories",
style: Theme.of(context).textTheme.headline1!),
),
// list of Stories
Expanded(
child: ListView.builder(
itemCount: 5,
shrinkWrap: true,
scrollDirection: Axis.horizontal,
itemBuilder: (context, index) {
return Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Container(
width: 200,
height: 100,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: Colors.amber,
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"Steve H.",
),
Text(
"I bet away my house and all the money i got",
style: Theme.of(context).textTheme.bodyText2!,
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
],
),
),
],
);
},
),
),
],
),
),
Your result screen->
Your text is overlapping because of the Stack widget. You can either wrap your text inside a sized box to give a fix width or you can remove Stack widget and use Column instead. I dont find any particular use of stack here, so probably you can remove it without any issues.
Try wrapping with container and specify any width
Container(
width: 100,
child: Text(
"I bet away my house and all the money i got",
style: Theme.of(context).textTheme.subtitle1,
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
Try wrapping your overlapping Text with a fixed width SizedBox, and see if it fixes your issue.
Have you tried wrapping the Text in a FittedBox()
I'm having this "extra space" on my first listview item that is a card being encapsulated in a container.
How do I remove it?
Widget build(BuildContext context) {
return Container(
padding: EdgeInsets.all(15.0),
height: 300,
child: Column(children: [
Row(children: [
Expanded(
child: Text("Lowest Fuel Price",
style: TextStyle(
fontWeight: FontWeight.w500,
color: Theme.orange3,
fontSize: 16.0)))
]),
Container(
height: 250,
child: Card(
elevation: 3,
child: ListView.builder(
itemCount: cheapest.length,
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
itemBuilder: (context, index) {
final item = cheapest[index];
return Column(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
Text(
item.petrolType,
style: TextStyle(
color: Theme.gray1, fontSize: 18),
),
Text(
"\$" + item.petrolPrice,
style: TextStyle(
color: Theme.gray1, fontSize: 25),
),
Image(
fit: BoxFit.fill,
image: new AssetImage(
'assets/images/fuel_station/' +
item.petrolStation.toLowerCase() +
'.png')),
]),
index != cheapest.length - 1
? Divider(
color: Colors.grey,
)
: Divider(color: Colors.white)
],
);
})),
)
]));
}
https://api.flutter.dev/flutter/widgets/ListView-class.html
By default, ListView will automatically pad the list's scrollable extremities to avoid partial obstructions indicated by MediaQuery's padding. To avoid this behaviour, override with a zero-padding property.
Card(
elevation: 3,
child: MediaQuery.removePadding(
context: context,
removeTop: true,
child: ListView.builder(),
),
),
I am trying to create a list view that contains 10 data, in each item there four widgets that wraps inside a row.
First i inserted a circle image widget, in next I added expanded widget to divide the text widgets equally.
Almost, I have achieved but i found difficulty in ellipsis the text.
Code
class EmailPage extends StatefulWidget {
#override
_EmailPageState createState() => _EmailPageState();
}
class _EmailPageState extends State<EmailPage> {
GlobalKey _keyRed = GlobalKey();
var name = "Adellena Jacksonnnnnnnnnnnnnnnnnnnnnnnnnnnn";
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
elevation: 0.0,
backgroundColor: greenColor,
title: const Text('Inbox'),
actions: <Widget>[
new IconButton(
icon: new Icon(Icons.edit),
onPressed: () => Navigator.of(context).pop(null),
),
],
),
body: SizedBox(
width: MediaQuery.of(context).size.width,
child: ListView.builder(
shrinkWrap: true,
itemCount: 10,
itemBuilder: (BuildContext context, int index) {
return Padding(
padding: const EdgeInsets.all(10.0),
child: new Row(
children: <Widget>[
SizedBox(
width: 30,
height: 30,
child: CircleAvatar(
backgroundColor: Colors.brown.shade800),
),
Expanded(
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Expanded(
flex: 4,
child: Container(
child: new Text(
name,
overflow: TextOverflow.ellipsis,
softWrap: false,
style: TextStyle(fontSize: 14),
),
),
),
new Expanded(
flex: 3,
child: new Text(
"&14215",
textAlign: TextAlign.center,
style: TextStyle(fontSize: 12),
),
),
new Expanded(
flex: 3,
child: new Text(
"1000 min ago",
textAlign: TextAlign.end,
overflow: TextOverflow.ellipsis,
style: TextStyle(fontSize: 14),
),
),
],
),
),
],
),
);
}),
));
}
}
Screenshot 1
When we remove overflow: TextOverflow.ellipsis in the text widget look like this [Screenshot 2]
Screenshot 2
In above image i didn't get the full text "AdellenaJacksonnnnnnnnn
", but expanded restrict the widget
how many flex can be shown in it. Problem is ellipsis not working as
expected
Note : When i remove the space in the string var name = "AdellenaJacksonnnnnnnnn"; like this ellipsis working fine
The simplest way:
var name = 'Adellena Jacksonnnnnnnnn';
name = name.replaceAll('', '\u200B');
For simpler to use, you can write an extension:
extension StringExtension on String {
String useCorrectEllipsis() {
return replaceAll('', '\u200B');
}
}
usage:
final name = 'Adellena Jacksonnnnnnnnn'.useCorrectEllipsis();
You could make use of this stupid hack, by splitting the name into, you could modify and actually make use of it if you set any max length for first name.
I have clipped the first name so it won't look like it's overflowing get along with the ui, assume there is no maxlength
Flexible(
child: Text(
tempname[0],
overflow: TextOverflow.clip,
maxLines: 1,
),
),
The last name is set ellipsis to give a hit the name is overflowing
Flexible(
child: Text(
tempname[0],
overflow: TextOverflow.ellipsis,
),
),
ListView.builder(
shrinkWrap: true,
itemCount: 10,
itemBuilder: (BuildContext context, int index) {
var tempname = name.split(' ');
return Padding(
padding: const EdgeInsets.all(10.0),
child: new Row(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
SizedBox(
width: 30,
height: 30,
child: CircleAvatar(
backgroundColor: Colors.brown.shade800),
),
Expanded(
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Expanded(
flex: 4,
// width: 100,
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Flexible(
child: Text(
tempname[0],
overflow: TextOverflow.clip,
maxLines: 1,
),
),
Text(' '),
Flexible(
child: Text(
tempname[1],
overflow: TextOverflow.ellipsis,
),
)
],
),
),
new Expanded(
flex: 3,
child: new Text(
"&14215",
textAlign: TextAlign.center,
style: TextStyle(fontSize: 12),
),
),
new Expanded(
flex: 3,
child: new Text(
"1000 min ago",
textAlign: TextAlign.end,
overflow: TextOverflow.ellipsis,
style: TextStyle(fontSize: 14),
),
),
],
),
),
],
),
);
}),
name = 'Adellenaddddddddddddd Jacksoonnnnnnnnnn';
name = 'Nadeem Jacksoonnnnnnnnnn';
overflow: TextOverflow.fade did the trick for me.
Try with flexible instead of Expanded because. Official Documentation
Using a Flexible widget gives a child of a Row, Column, or Flex the flexibility to expand to fill the available space in the main axis (e.g., horizontally for a Row or vertically for a Column), but, unlike Expanded, Flexible does not require the child to fill the available space.
try to type the surname seperated like that jackson nn nn nnn nnn that will work better