I want to create listview like this image. How can I achieve this using flutter?
Please do a favour if you know how to make it?
You need a List view widget and with builder which contains a card widget which has Row as child.
ListView :-
ListView.builder(
padding: EdgeInsets.all(10.0),
shrinkWrap: false,
itemCount: model.length,
itemBuilder: (BuildContext context, int index) {
return listItem(context, index);
},
List item :-
model is removed
Widget listItem(BuildContext context, int index) {
return Card(
child: Row(
children: <Widget>[
Container(margin: EdgeInsets.all(10),child: Text("1")),
Container(height: 20,width: 1,color: Colors.blue,),
Container(margin:EdgeInsets.all(10),child: Text("asdasd"))
],
),
);
}
Related
I have a vertical ListView inside a Card inside a Row, next to another widget, which can have different heights. Now I would like the Card to stretch to fill all the space of the Row. Here is an example:
#override
Widget build(BuildContext context) {
return Row(
children: [
Card(
child: WidgetWithDynamicHeight(),
),
Card(
child: ListView.builder(
itemCount: items.length,
itemBuilder: (context, index) => MyListTile(items[index]),
),
),
]
);
}
Now, I could wrap everything with a SizedBox and set a fixed height, but that is not what I want. I want the Row to be as big as the first Widget (WidgetWithDynamicHeight), and the second card to have the exact same size. How can I implement that?
Try Intrinsic height. It will build all children at the same height of the tallest child
return IntrinsicHeight(
child: Row(
children: [
Card(
child: WidgetWithDynamicHeight(),
),
Card(
child: ListView.builder(
itemCount: items.length,
itemBuilder: (context, index) => MyListTile(items[index]),
),
),
]
)
);
More about IntrinsicHeight
I am trying to build a Nested listview but getting "RenderFlex children have non-zero flex but incoming height constraints are unbounded" error with below code.
Layers are like this...
Each item of a horizontal ListView has a Text widget and a ListView widget.
At the second level, each item of vertical ListView contains again a Text widget and a ListView.
At the third level, each item of the ListView contains a Text widget.
-Horizontal ListView
- Person's Name
- ListView
- Relation Name
- ListView
- Person's Name
Thanks in advance.
person.relations is a Map<String, List<Person>>
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Relationship Explorer"),
),
body: SafeArea(
child: BlocBuilder<RelationCubit, CubitState>(
bloc: _cubit,
builder: (_, state) {
if (state is RelationSuccessState) {
return ListView.builder(
scrollDirection: Axis.horizontal,
itemBuilder: (_, outerIndex) =>
_relationTreeView(context, outerIndex),
itemCount: _cubit.people.length,
);
} else {
return WaitWidget();
}
},
),
),
);
}
Widget _relationTreeView(BuildContext context, int outerIndex) {
var person = _cubit.people[outerIndex];
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(person.displayName ?? ''),
Expanded(
child: Container(
width: MediaQuery.of(context).size.width,
child: ListView.builder(
shrinkWrap: true,
physics: ClampingScrollPhysics(),
itemCount: person.relations?.length,
itemBuilder: (_, index) {
var persons = person.relations?[index];
return Column(
mainAxisSize: MainAxisSize.min,
children: [
Text(person.relations!.keys.elementAt(index)),
Expanded(
child: Container(
width: MediaQuery.of(context).size.width,
child: ListView.builder(
shrinkWrap: true,
physics: ClampingScrollPhysics(),
itemCount: persons.length,
itemBuilder: (_, index) {
var innerPerson = persons[index];
return Text(innerPerson.displayName ?? '');
},
),
),
)
],
);
},
),
),
),
],
);
}
Wrap the list view with a container and give a height.
I have several containiers inside a ListView which will result in a scrollable content within a page. Each container has a Column as child and within the Column I have a title and a divider, then the actual content.
I want one of the container to be something like:
Title
--------- (divider)
Scrollable content (most likely a ListView)
What I have so far:
Container(
height: 250,
child: Column(children: <Widget>[
Text('Title'),
Divider(),
SingleChildScrollView(
child: ListView.builder(
shrinkWrap: true,
itemCount: 15,
itemBuilder: (BuildContext context, int index) {
return Text('abc');
}
)
)
]
)
The thing is that I want the container to have a specific height, but I get an overflow pixel error.
Wrap your ListView with Expanded. Remove your SingleChildScrollView as ListView has its own scrolling behaviour. Try as follows:
Container(
height: 250,
child: Column(children: <Widget>[
Text('Title'),
Divider(),
Expanded(
child: ListView.builder(
shrinkWrap: true,
itemCount: 15,
itemBuilder: (BuildContext context, int index) {
return Text('abc');
}
),
)
]
))
Wrap your ListView.builder() widget inside a SizedBox() widget and specify available height after accommodating Title() widget.
Container(
height: 250,
child: Column(children: <Widget>[
Text('Title'),
Divider(),
SizedBox(
height: 200, // (250 - 50) where 50 units for other widgets
child: SingleChildScrollView(
child: ListView.builder(
shrinkWrap: true,
itemCount: 15,
itemBuilder: (BuildContext context, int index) {
return Text('abc');
}
)
)
)
]
)
You can also use Container() widget instead SizedBox() widget but only if needed.
SizedBox() is a const constructor where Container() widget is not, so SizedBox() allows the compiler to create more efficient code.
So I'm working on a tarot app and I can't figure out how to make this page scrollable.
I'm currently using the element SingleChildScrollView to wrap my elements.
Right now it scrolls down part way and then gets stuck, and it bounces back up and I can't see the rest of my screen down below.
I'm thinking I should probably use a multi child scroll view widget but not sure how to get that to work.
What I'm looking for is to be able to display a list of elements and have them scroll on the page.
I'm sure I'm doing this wrong if someone could me out that would be awesome! :) Thanks in advance for your help and advice
#override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
child: getSpread(widget.selected),
),
ListView.builder(
itemCount: widget.selected.length,
itemBuilder: (context, index) {
final int cardNumber = widget.selected[index];
final TarotCard tarotCard = tarotMaster.tarotDeck[cardNumber];
return TarotCardDetails(tarotCard: tarotCard);
},
scrollDirection: Axis.vertical,
shrinkWrap: true,
),
BottomButton(
onTap: () {
Navigator.pushNamed(context, '/home');
print(widget.selected);
},
buttonTitle: 'BACK TO HOME',
),
],
),
),
),
);
}
}
Use physics in ListView.builder() this issue happens because flutter does not know what to scroll because it found two scrollable widget. You can specify a empty ScrollPhysics so flutter will know ListView will not need to be scrolled instead the entire page which is SingleChildScrollView widget items to be scroll
#override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
child: getSpread(widget.selected),
),
ListView.builder(
physics: ScrollPhysics(),
itemCount: widget.selected.length,
itemBuilder: (context, index) {
final int cardNumber = widget.selected[index];
final TarotCard tarotCard = tarotMaster.tarotDeck[cardNumber];
return TarotCardDetails(tarotCard: tarotCard);
},
scrollDirection: Axis.vertical,
shrinkWrap: true,
),
BottomButton(
onTap: () {
Navigator.pushNamed(context, '/home');
print(widget.selected);
},
buttonTitle: 'BACK TO HOME',
),
],
),
),
),
);
}
}
Hope this will help you.
I have widget which return CircularProgressIndicator()
it shows on the circular mark upper left of screen.
However I want to put this as overlay and put at the center of screen.
I am checking widget list but I cant find what Widget should I use as overlay.
On which layer should I put this on??
For now my code is like this ,when loading it shows CircularProgressIndicator instead of ListView
However I want to put CircularProgressIndicator() on ListView
Widget build(BuildContext context) {
if(loading) {
return CircularProgressIndicator();
}
return ListView.builder(
controller: _controller,
itemCount: articles.length,
itemBuilder: (context, index) {
return ListTile(
title: Text(articles[index]),
);
},
);
}
Thank you very much for answers.
I solve with stack Widget like this below.
At first I try to use overlay, but I bumped into some errors.
So, I use simply stack.
#override
Widget build(BuildContext context) {
Widget tempWidget = new CircularProgressIndicator();
if(loading) {
tempWidget = new CircularProgressIndicator();
}
else {
tempWidget = new Center();//EmptyWidget
}
return Stack(
children: <Widget>[
ListView.builder(
controller: _controller,
itemCount: articles.length,
itemBuilder: (context, index) {
return ListTile(
title: Text(articles[index].title),
onTap: () => onTapped(context,articles[index].url),
);
},
),
Center(
child: tempWidget
),
]
);
}
Stack(
children: <Widget>[
ListView.builder(
itemBuilder: (BuildContext context, int index) {
return Container(
height: 100,
color: Colors.red,
);
},
itemCount: 10,
),
Center(
child: CircularProgressIndicator(),
),
],
)
Stack(
children: <Widget>[
ListView.builder(
itemBuilder: (BuildContext context, int index) {
return Container(
height: 100,
color: Colors.red,
);
},
itemCount: 10,
),
isLoading? Container(child: Center(
child: CircularProgressIndicator(),
)): Container(), //if isLoading flag is true it'll display the progress indicator
],
)
or you can use futureBuilder or streamBuilder when loading data from somewhere and you want to change the ui depending on the state
To overlay or position items on top of each other you would usually use a Stack widget or Overlay as described here. For your usecase I would recommend checking out the modal progress hud package.