I am facing a little problem with Flutter UI which I'm not sure what cause it.
Here's my snippet:
class _HomePageState extends State<HomePage> with TickerProviderStateMixin {
String fetchedData = 'doubleleng';
#override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
height: 40.0,
padding: const EdgeInsets.only(bottom: 8.0),
margin: const EdgeInsets.symmetric(horizontal: 40.0),
child: ListView.builder(
shrinkWrap: true,
scrollDirection: Axis.horizontal,
physics: NeverScrollableScrollPhysics(),
itemCount: fetchedData.length,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.symmetric(
horizontal: 4.0,
),
child: SizedBox(
width: MediaQuery.of(context).size.width * 0.06,
child: TextFormField(
style: TextStyle(
fontSize: 20.0,
),
keyboardType: TextInputType.number,
inputFormatters: [
LengthLimitingTextInputFormatter(1),
],
textAlign: TextAlign.center,
),
),
);
},
),
),
Container(
child: RaisedButton(
onPressed: () {},
),
),
],
),
),
);
}
}
So I want to build a dynamic TextFormField based on the length of the fetchedData so I use ListView.builder. I fill the textAlign property with TextAlign.center but doesn't get exactly what I want.
Here's the SS:
Here's the SS of the weird part (not exactly centered):
It's not just '5' but all
I don't know if a problem with RepaintBoundary or font itself, but
I tried a few things and see the only solution is to use InputDecoration with Padding in your TextFormField/TextField:
TextFormField(
// your params
decoration: new InputDecoration(contentPadding: const EdgeInsets.only(left: 3.0))
)
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 want the Card widgets to scroll horizontally, but it's not working. I've tried and changed GridView to ListView.
Adding physics is not helping either.
Here's the code:
#override
Widget build(BuildContext context) {
SizeConfig().init(context);
return Expanded(
child: Column(
children: [
Padding(
padding: EdgeInsets.symmetric(
vertical: SizeConfig.blockSizeVertical * 2),
child: (Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
'Names',
style: Theme.of(context).textTheme.headline6,
),
InkWell(
onTap: () {},
child: Row(children: [
Text('show more',
style: Theme.of(context).textTheme.caption),
const Padding(
padding: EdgeInsets.only(top: 2),
child: Icon(
Icons.keyboard_arrow_left_sharp,
size: 20,
),
),
]),
),
],
)),
),
FutureBuilder<DataModel>(
future: InfoAPI('assets/itemsData.json').getDataLocally(context),
builder: (context, snapshot) {
final data = snapshot.data;
final List<String> list = getnames(data);
return Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: Theme.of(context).primaryColor,
),
height: SizeConfig.blockSizeVertical * 20,
// width: double.infinity,
child: GridView.count(
crossAxisCount: 1,
padding: const EdgeInsets.symmetric(
vertical: 8.0, horizontal: 10.0),
scrollDirection: Axis.horizontal,
childAspectRatio: 1,
physics: const NeverScrollableScrollPhysics(),
shrinkWrap: true,
children: List.generate(list.length, (index) {
return Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16)),
//clipBehavior: Clip.antiAlias,
color: Theme.of(context).cardColor,
child: Center(
child: Text(
list[index],
style: Theme.of(context).textTheme.bodyText1,
)));
},
)),
);
})
],
),
);
}```
So, after long research I discovered that the 'horizontal scrolling' is working just fine on mobile, the problem was because I used chrome.
You can refer to [Horizontal listview not scrolling on web but scrolling on mobile] for more information.
Try wrapping your ListView/GridView with a Flexible Widget. Also Youve set physics to NeverScrollableScrollPhysics() so change it to some other scroll physics(like AlwaysScrollableScrollPhysics()) if you want it to be scrollable
I am trying to create a chat screen with text field at the bottom and whenever it is clicked the keyboard comes up and the textfield should be on top of the keyboard but my own isn't doing what it's supposed to do. I have checked other similar questions and answers on google, stackoverflow and github but it still stays the maybe because in mine am using constraints: BoxConstraints(maxHeight: 160), which might be what is causing it but i don't really know
This my code
class _ChatSectionState
extends State<ChatSectionState> {
List<File> images = List<File>();
getMultiFile() async {
await pickFileFromMobile("multi").then((value) {
if (value != null) {
value.paths.forEach((element) {
images.add(File(element));
});
// images = value.paths.map((path) => File(path)).toList();
}
});
setState(() {});
}
#override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
appBar: AppBar(...,
body: Container(
height: double.infinity,
child: Stack(
children: [
Padding(
padding: EdgeInsets.only(bottom: 50),
child: Container(
child: ListView.builder(
itemCount: 10,
reverse: true,
shrinkWrap: true,
physics: ScrollPhysics(),
itemBuilder: (ctx, idx) {...
///...
),
),
),
///This is the part that hides behide the keyboard when it appears which i want to show on top
Align(
alignment: Alignment.bottomCenter,
child: Container(
decoration: BoxDecoration(
color: white,
border: Border(
top: BorderSide(
color: grey[400],
width: .7,
),
bottom: BorderSide(
color: grey[400],
width: .7,
)),
),
constraints: BoxConstraints(maxHeight: 160), //This is the box contraints
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
(images.length < 1)
? SizedBox(height: 0)
: Expanded(
child: ListView.builder(
shrinkWrap: true,
scrollDirection: Axis.horizontal,
physics: ScrollPhysics(),
padding: EdgeInsets.symmetric(
vertical: 7, horizontal: 10),
itemCount: images.length,
itemBuilder: (ctx, idx) {
return Container(
///... This is to show a image from file width a height of 100
);
},
),
),
Container(
decoration: BoxDecoration(
border: Border(
top: BorderSide(
color: grey[300],
width: .5,
)),
),
child: Row(children: [
Container(
margin: new EdgeInsets.symmetric(horizontal: 8.0),
child: new IconButton(
icon: new Icon(Icons.image),
onPressed: () => getMultiFile(),
color: primary,
),
),
Flexible(
child: Container(
child: TextFormField(
//controller: messageEditingController,
style: TextStyle(color: nBlack, fontSize: 15.0),
decoration: InputDecoration.collapsed(
hintText: 'Type a message',
hintStyle: TextStyle(color: grey),
),
onFieldSubmitted: (value) {},
),
),
),
Container(
margin: new EdgeInsets.symmetric(horizontal: 8.0),
child: new IconButton(
icon: new Icon(Icons.send),
onPressed: () {},
color: primary,
),
),
]),
),
],
),
),
)
],
),
),
resizeToAvoidBottomInset: false,
));
}
}
Please how can I make it work cause i have checked different pages still does give me what i want. I also tried this [answer][1]
[1]: https://stackoverflow.com/a/49715952/14650702 which worked but the animation was terrible
You can change resizeToAvoidBottomInset: ture, for scaffold.
it will shrink the whole scaffold when keyboard is opened.
I use another way. resizeToAvoidBottomInset: true and do some changes for lifting widgets top of keyboard.
bottom = MediaQuery.of(context).viewInsets.bottom;
Scaffold(
resizeToAvoidBottomInset: ture,
body: SingleChildScrollView(
reverse:true,
child: Padding(
padding: EdgeInsets.only(bottom: bottom),
child: ...
)));
if you decrease space from keyboard to last widget use MediaQuery.of(context).viewInsets.bottom/2 e.x.
I'm having the same issue that is outlined here. I've tried all of the solutions provided and I'm still getting an error "RenderFlex overflowed by x pixels on the bottom". I don't have any widgets underneath the custom ListView Builder. I'm really at a loss here.
Widget build(BuildContext context) {
return new Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
new GradientAppBar("Twitter"),
new Container(
child: Flexible(
child: Column(
children: <Widget>[
Container(
padding: const EdgeInsets.only(top: 10.0, left: 10.0),
child: UserInfoHeader(userinfo)
),
PagewiseListView(
shrinkWrap: true,
scrollDirection: Axis.vertical,
physics: const AlwaysScrollableScrollPhysics(),
pageSize: 200,
itemBuilder: (context, TwitterCardContent entry, _) {
return TwitterCard(entry);
},
pageFuture: (pageIndex) {
return getStatuses(userinfo.screenName);
},
)
],
),
),
),
],
);
}
And here is the contents of each List item.
Widget build(BuildContext context) {
return new Card(
//elevation: 8.0,
margin: new EdgeInsets.symmetric(horizontal: 10.0, vertical: 10.0),
child: Container(
decoration: new BoxDecoration(
color: Colors.white,
borderRadius: new BorderRadius.circular(25.0)
),
child: ListTile(
contentPadding: EdgeInsets.symmetric(horizontal: 20.0, vertical: 10.0),
leading: Container(
padding: EdgeInsets.only(right: 12.0),
decoration: new BoxDecoration(
border: new Border(
right: new BorderSide(width: 1.0, color: Colors.white54)
)
),
child: notchecked,
),
title: Text(
statusCard.timeStampString,
style: Theme.TextStyles.buttonText,
),
subtitle: Text(
statusCard.text,
style: Theme.TextStyles.contentCardText,
),
trailing: delete,
),
),
);
}
Column widget doesn't scroll and you have that widget as your parent widget and PageListView as a child inside it.
Instead, replace your parent Column widget with ListView that should resolve renderflow exception.
Wrap your listview builder with expanded widget.
just to add an example to Dave's answer
Expanded(
child: ListView.builder(
shrinkWrap: true,
itemCount: 5,
itemBuilder: (context, index) {
return Container();
}
Problem is that your ListView is inside a Column which has fixed height and can't be scroll whereas listview scrolls. I am not sure but changing Column a listview itself or using Expanded/Flexible with Column could workOut.
I am adding a header in the grid view. The header is scrolling but when touching grid view. It is not scrolling. I want to scroll header and gridview.
I have used SingleChildScrollView and Expanded. How to solve the please help me.
My code is shown below
Widget ItemGridview() {
return Container(
color: Colors.white,
padding: EdgeInsets.all(10),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
new Expanded(
child: SingleChildScrollView(
child: Column(
children: <Widget>[
new Text(
'Items of products',
style: TextStyle(fontWeight: FontWeight.w700, fontSize: 18.0),
textAlign: TextAlign.left,
),
GridView.count(
shrinkWrap: true,
primary: true,
padding: EdgeInsets.only(top:15.0),
crossAxisCount: 3,
childAspectRatio: 0.60, //1.0
mainAxisSpacing: 0.2, //1.0
crossAxisSpacing: 4.0, //1.0
children: createCategoryList(),
),
],
),
)
)
]
),
);
}
In my code Items of products is the header.
List<Widget> createCategoryList() {
List<Widget> createCategoryList = List<Widget>();
for (int i = 0; i < documents.length; i++) {
createCategoryList
.add(makeGridCell(documents[i].data['title'], "name", 8,documents[i].data['id']));
}
return createCategoryList;
}
Container makeGridCell(String name, String image, int count, String id) {
return Container(
child: new GestureDetector(
onTap: () {
},
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisSize: MainAxisSize.min,
verticalDirection: VerticalDirection.down,
children: <Widget>[
new Container(
child: Image.asset('assets/' + image + ".jpg"),
),
new Container(
color: Colors.white,
padding: EdgeInsets.only(left: 5),
child: new Text(name,
style: TextStyle(
fontWeight: FontWeight.w500, fontSize: 18.0)),
),
],
),
));
}
The createCategoryList() is the list of items in grid written in widget.
I had similar widget tree like you
a gridview.count() wrapped in SingleChildScrollView adding
physics: ScrollPhysics(),
to GridView.count() Widget Solved my problem
source:https://github.com/flutter/flutter/issues/19205
Add physics: ScrollPhysics() property to Gridview. it iwll scroll.
just add some property in GridView
Widget _buildFields(BuildContext context) {
return Container(
color: Colors.white,
child: GridView.count(
crossAxisCount: 2,
crossAxisSpacing: 2.0,
mainAxisSpacing: 2.0,
shrinkWrap: true,
scrollDirection: Axis.vertical,
physics: NeverScrollableScrollPhysics(),
children: List.generate(choices.length, (index) {
return Center(
child: new Column(
children: [
new Expanded(
child: SelectCard(choice: choices[index]),//your card wight
),
],
),
);
}),
));
}
and use like this
class _Dashboard extends State<Dashboard> {
#override
Widget build(BuildContext context) {
return OrientationBuilder(builder: (context, orientation) {
return ListView(
children: <Widget>[
Container(
height: 200,
child: Image.network(
"https://www.gizbot.com/img/2013/11/23-weekend-deals-top-10-latest-smartphones.jpg"),
),
_buildFields(context),
],
);
});
}
}
You have some issues related to the Scroll of your widgets, you can reduce the amount of Widgets using Wrap, like this :
Container(
color: Colors.white,
padding: EdgeInsets.all(10),
child: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Text(
'Items of products',
style: TextStyle(fontWeight: FontWeight.w700, fontSize: 18.0),
textAlign: TextAlign.left,
),
Padding(
padding: const EdgeInsets.only(top: 15.0),
child: Wrap(
spacing: 20.0,
alignment: WrapAlignment.spaceEvenly,
children:createCategoryList(),
),
],
),
)
)
]
),
);
Add a constraint width or a fixed with to the widget of your item:
return Container(
constraints:
BoxConstraints(maxWidth: MediaQuery.of(context).size.width / 4),
child: new GestureDetector(
I think you need to use some custom scroll view
CustomScrollView(
primary: false,
slivers: <Widget>[
SliverPadding(
padding: const EdgeInsets.all(20.0),
sliver: SliverGrid.count(
crossAxisSpacing: 10.0,
crossAxisCount: 2,
children: <Widget>[
const Text('He\'d have you all unravel at the'),
const Text('Heed not the rabble'),
const Text('Sound of screams but the'),
const Text('Who scream'),
const Text('Revolution is coming...'),
const Text('Revolution, they...'),
],
),
),
],
)
Just ran into this myself, change your primary parameter for the GridView to false, give that a try.
In Gridview.builder scrolling is not working for smaller resolutions like tablet mode,mobile mode then just wrap the Gridview.builder under the listview.builder widget.
SizedBox(
width: screenSize.width,
height: screenSize.height * entry.contentHeightFactor,
child: ListView.builder(
itemCount: 1,
itemBuilder: (context, index) {
return Card(
child: Container(
width: screenSize.width * 0.8,
height: screenSize.height * 0.72,
padding: const EdgeInsets.all(10),
child: GridView.builder(
scrollDirection: Axis.vertical,
gridDelegate:
const SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 3,
),
padding: const EdgeInsets.all(5),
itemCount: 30,
itemBuilder: (BuildContext context, int index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child:Card(....),
);
},
),
),
);
},
),
),