someone help me please enter image description here
https://imgur.com/yGEzU2n
i need the box resized automatically fot the content.
i'm new in flutter any suggestions?
bodyWidget(BuildContext context) => Stack(
children: <Widget>[
Positioned(
height: MediaQuery.of(context).size.height / 1.5, //Altura del box cone squinas redondeadas
width: MediaQuery.of(context).size.width - 20,
left: 10.0,
top: MediaQuery.of(context).size.height * 0.1,
child: Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
SizedBox(
height: 130.0, // espacion entre el texto de la descripcion y la foto del producto
),
Use resizeToAvoidBottomPadding: false . Read about it here.
First Solution:
you usually need to provide a scroll widget on top of your widgets because if you try to open the keyboard or change the orientation of your phone, flutter needs to know how to handle the distribution of the widgets on the screen.
Please review this resource, you can check the different options that flutter provide Out of the box, and choose the best option for your scenario.
Scrolling
Second Option:
resizeToAvoidBottomPadding: false
That should make the error disappear
You can see through a sample code :
appBar: new AppBar(title: new Text('Create A Parking Slot')),
body: new Center(
child: new SingleChildScrollView(
child: new Container(
margin: EdgeInsets.fromLTRB(10.0, 20.0, 10.0, 10.0),
color: Colors.white,
child: new Column(children: <Widget>[
new TextField(
decoration: InputDecoration(labelText: "Title*"),
),
new TextField(
decoration: InputDecoration(labelText: "Available Space in Sqft*"),
),
new TextField(
decoration: InputDecoration(labelText: "Available Space*"),
),
new TextField(
decoration: InputDecoration(labelText: "Address*"),
),
new TextField(
decoration: InputDecoration(labelText: "Contact Number*"),
),
new ListTile(
title: const Text('Select Your Plan'),
trailing: new DropdownButton<String>(
value: "Hourly",
onChanged: (String newValue) {
print(newValue);
},
items:
<String>['Hourly', 'Weekly', 'Monthly'].map((String value) {
return new DropdownMenuItem<String>(
value: value,
child: new Text(value),
);
}).toList(),
),
),
new Container(
height: 1.0,
width: width,
color: Colors.grey,
),
new TextField(
decoration: InputDecoration(labelText: "Rate*"),
),
new UploadImage(),
new RaisedButton(
child: const Text('Create'),
color: Theme.of(context).accentColor,
textColor: Colors.white,
elevation: 4.0,
splashColor: Colors.blueGrey,
onPressed: () {
// Perform some action
//button1(context);
},
)
//
]),
)))
Related
i'm a beginner in flutter and still trying to figure my way around. So i'm trying to build this app(i attached the image below), but I'm finding it difficult to get the gridview into a container and curve the edges of the container or include a border. I tried using Flexible instead to wrap the gridview, but i can't curve the edges with that or put a border.
import 'package:general_quizz/models/first_screen_data.dart';
import 'package:general_quizz/widgets/sectionBoxed.dart';
class Sections extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('quizz app'),
),
body: Column(
children: [
Container(
width: double.infinity,
height: 200,
alignment: Alignment.center,
decoration: BoxDecoration(
color: Colors.redAccent,
),
child: Text('Quizz app')),
Container(
decoration: BoxDecoration(
color:Colors.white,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(50),
topRight: Radius.circular(50),
),
),
Flexible(
child: GridView(
children: DUMMY_CATEGORIES
.map(
(catData) => SectionBoxed(
catData.title,
catData.color,
catData.id,
),
)
.toList(),
gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
maxCrossAxisExtent: 200,
childAspectRatio: 3 / 2,
crossAxisSpacing: 20,
mainAxisSpacing: 20,
),
),
),
],
),
);
}
}```
This is what I'm trying to recreate. [this][1]
[I'm trying to recreate this][2]
[1]: https://i.stack.imgur.com/GSl11.jpg
[2]: ![]https://i.stack.imgur.com/3fWCz.jpg
you have to use Container widget like this:
Container(
child:...,
height:200,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(20),
topRight: Radius.circular(20),
)),
);
I have been experimenting with Flutter trying to recreate an app that I wrote for Android 5 years ago. But I can't seem to get the layout to work very well.
I have tried a number of different widgets, but each time I try something, it seems like I am taking 2 steps forward and 3 steps back.
The app is going to be vertical position only.
Simple banner image at the top.
A trivia question.
Radio button group with 4 answers.
Then 2 buttons - 'Check Answer' and 'Skip Question'
Bottom bar
I am trying to make sure that the radio buttons and the buttons don't bounce around when the question changes.
This is what I have
This is what I would like
And this is the code that I have been fighting with.
Any help or tips would be greatly appreciated.
class _MyHomePageState extends State<MyHomePage> {
final TriviaBloc _triviaBloc = TriviaBloc();
TriviaQuestion _initTriviaQuestion = new TriviaQuestion('', '', '', '', '', 1, 1);
String _selectedAnswer = "";
TextStyle _answerStyle = new TextStyle(textBaseline: TextBaseline.alphabetic, fontStyle: FontStyle.normal, fontFamily: 'QarmicsansAbridged', fontSize: 16);
#override
void dispose() {
_triviaBloc.dispose();
super.dispose();
}
#override
void initState() {
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.orangeAccent,
body: SafeArea(
minimum: const EdgeInsets.all(16.0),
child:
Column(children: [
ImageBanner("assets/header_2.jpg"),
Expanded(
child:
StreamBuilder<TriviaQuestion>(
initialData: _triviaBloc.getInitialTriviaQuestion(),
//_initTriviaQuestion,
stream: _triviaBloc.triviaQuestionStream,
//initialData: _triviaBloc.getInitialTriviaQuestion(),
//builder: (BuildContext context, AsyncSnapshot<TriviaQuestion> snapshot)
builder: (BuildContext context, snapshot) {
//_triviaBloc.getTriviaQuestion(snapshot, context);
if (snapshot.data != null) {
return Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SizedBox(height: 15),
Padding(
padding: EdgeInsets.all(2.0),
child: TriviaAutoSizeText(context, snapshot.data.Question),
),
RadioButtonGroup(
labels: <String>[
snapshot.data.IncorrectAnswer1,
snapshot.data.IncorrectAnswer2,
snapshot.data.CorrectAnswer,
snapshot.data.IncorrectAnswer3
],
labelStyle: _answerStyle,
onSelected: (String selected) => _selectedAnswer = selected),
//),
SizedBox(height: 10),
new InkWell(
onTap: () => {_triviaBloc.checkAnswer(QuestionAnswered(_selectedAnswer))},
child: new Container(
width: MediaQuery.of(context).size.width * 0.5,
height: 50.0,
decoration: new BoxDecoration(
color: _butttonInteriorColour,
//Colors.blueAccent,
border:
new Border.all(color: Colors.white, width: 1.0),
borderRadius: new BorderRadius.circular(20.0),
),
child: new Center(
child: new Text(
'Check Answer',
style: new TextStyle(
fontSize: 18.0, color: Colors.white),
),
),
),
),
SizedBox(height: 10),
new InkWell(
onTap: () =>
{_triviaBloc.getTriviaQuestion(snapshot, context)},
child: new Container(
width: MediaQuery.of(context).size.width * 0.5,
height: 50.0,
decoration: new BoxDecoration(
color: _butttonInteriorColour,
//Colors.blueAccent,
border:
new Border.all(color: Colors.white, width: 1.0),
borderRadius: new BorderRadius.circular(20.0),
),
child: new Center(
child: new Text(
'Next Question',
style: new TextStyle(
fontSize: 18.0, color: Colors.white),
),
),
),
),
],
);
} else {
return Center(child: CircularProgressIndicator());
}
;
}),
)]),
),
bottomNavigationBar: buildBottomNav(context),
);
}
}
So you want the 4 button group and the 2 buttons at the bottom without changing position ?
Maybe a Spacer will help with that
if (snapshot.data != null) {
return Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max, //replace this to fill everything
children: <Widget>[
SizedBox(height: 15),
Padding(
padding: EdgeInsets.all(2.0),
child: TriviaAutoSizeText(context, snapshot.data.Question),
),
Spacer(), //add the spacer here
RadioButtonGroup(
labels: <String>[
My problem is that : The listview does not appear at the first launch of app but after a hot reload it appears.
It's the first time I meet this bug.
That's my code :
#override
Widget build(BuildContext context) {
return new Scaffold(
backgroundColor: Colors.black,
body: new ListView.builder(
itemCount: toutesLesCartes.length,
itemBuilder: (context, count) {
Carte carte = toutesLesCartes[count];
String nom = carte.nomCarte;
String image = carte.imageCarte;
return new Dismissible(
key: new Key(nom),
direction: DismissDirection.endToStart,
child: new Container(
margin: EdgeInsets.all(5.0),
child: new Card(
color: Colors.transparent,
elevation: 10.0,
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
new Image.network(image, width: 150.0, height: 150.0,),
new CustomText(nom, factor: 2.0,),
],
),
),
),
background: new Container(
padding: EdgeInsets.only(right: 20.0),
color: Colors.red,
child: new Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
new CustomText("Supprimer"),
new Icon(Icons.delete, color: Colors.white,)
],
),
),
onDismissed: (direction) {
setState(() {
toutesLesCartes.removeAt(count);
nombreCarteChoisiValeur--;
});
},
);
}
),
);
}
I have an idea but it's strange : before, I using the Visibility widget so it is possible that it comes from a possible "cache" of the application?
All that will look at this post and help me, thank you very much!
Have a nice day !
Likely because toutesLesCartes.length is 0.
you can check this using the debugger or display something when the length is 0 eg
#override
Widget build(BuildContext context) {
return new Scaffold(
backgroundColor: Colors.black,
body: new ListView.builder(
itemCount: toutesLesCartes.length, //* place breakpoint here
itemBuilder: (context, count) {
Carte carte = toutesLesCartes[count];
String nom = carte.nomCarte;
String image = carte.imageCarte;
if(toutesLesCartes == null || toutesLesCartes.length == 0){
return CircularProgressIndicator(); //you should see loading animation if list is empty
}
return new Dismissible(
key: new Key(nom),
direction: DismissDirection.endToStart,
child: new Container(
margin: EdgeInsets.all(5.0),
child: new Card(
color: Colors.transparent,
elevation: 10.0,
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
new Image.network(image, width: 150.0, height: 150.0,),
new CustomText(nom, factor: 2.0,),
],
),
),
),
background: new Container(
padding: EdgeInsets.only(right: 20.0),
color: Colors.red,
child: new Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
new CustomText("Supprimer"),
new Icon(Icons.delete, color: Colors.white,)
],
),
),
onDismissed: (direction) {
setState(() {
toutesLesCartes.removeAt(count);
nombreCarteChoisiValeur--;
});
},
);
}
),
);
}
The solution would be to use a FutureBuilder
Word of warning: The application will run the build method multiple times, it's good practice to place anything you don't want to be repeatedly called (like database calls) outside of the method.
I am having a bit of a problem trying to create an image and text/icons below that image within a container in flutter. What I have so far , I want to include three row widgets under the image, each row will have a text widget or an icon widget but whenever i try to do this the container will just take the shape of the text/icon widgets and the image will disappear. Am I using the wrong widget in this case? I would like to have something similar to this notice the bottom section of the picture with the title, date, and location.
My code:
class EventRow extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Container(
height: 150.0,
margin: const EdgeInsets.symmetric(
vertical: 16.0,
horizontal: 24.0,
),
child: new Stack(
children: <Widget>[
eventCardContent,
userThumbnail,
],
),
);
}
final userThumbnail = new Container(
margin: EdgeInsets.symmetric(vertical: 16.0),
alignment: FractionalOffset.centerLeft,
child: CircleAvatar(
backgroundImage: AssetImage("assets/images/letter_u.png"),
backgroundColor: Colors.white,
maxRadius: 40.0,
),
);
final eventCardContent = new Container(
margin: new EdgeInsets.only(left: 46.0),
decoration: new BoxDecoration(
shape: BoxShape.rectangle,
color: new Color(0xFFFFFFFF),
borderRadius: new BorderRadius.circular(8.0),
image: DecorationImage(
image: AssetImage("assets/images/moon_pumpkin.jpeg"),
fit: BoxFit.fill,
),
),
);
you nee d to just wrap your container of userThumbnail with Column and use property mainAxisSize: MainAxisSize.min, that solved your problem.
It tells column widget to take space whatever is required but not more than that. Any
uncertainty in size won't work with mainAxisSize: MainAxisSize.min and can result in ui error of size undefined.
Following code may help you.
#override
Widget build (BuildContext context) {
return Scaffold(
appBar: new AppBar(
title: new Text("Csd"),
),
body: Column(
children: <Widget>[
Container(
height: 150.0,
margin: const EdgeInsets.symmetric(
vertical: 16.0,
horizontal: 24.0,
),
child: new Stack(
children: <Widget>[
eventCardContent,
userThumbnail,
],
),
),
new Column(
children: <Widget>[
Row(
children: <Widget>[
new Column(
children: <Widget>[
Text("SEP"),
Text("30"),
],
),
Expanded(
child:new Column(
children: <Widget>[
new Text("title"),
new Text("Sub title"),
new Text("Second Sub Title"),
],
)
)
],
),
],
)
],
),
);
}
God day,
Im having a trouble with layouts in flutter, anyone can help?
EDIT:
i will try to explain better.
I have this screen:
With this code:
return new Container(
height: height,
padding: new EdgeInsets.all(10.0),
child: new Card(
elevation: 10.0,
child:
new Column(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
new ListTile(
trailing:
_buildCounterButton(),
title: new Center(child: new Text('VENDAS POR PRODUTOS', style: new TextStyle(fontWeight: FontWeight.bold))),
subtitle: new Center(child: new Padding(padding: new EdgeInsets.only(top: 5.0), child:
new Text('Top 3 produtos dos últimos 30 dias', textAlign: TextAlign.center,))),
),
new FutureBuilder<List<RelatorioProdutos>>(
future: fetchRelatorioPorProduto(new http.Client(),'$dateInicial', '$dateFinal'),
builder: (context, snapshot) {
if (snapshot.hasError) print(snapshot.error);
else
auxTelaDetalhada = RelatorioVendasTotalizadasProdutos(prods: snapshot.data, aondeVoltar: 0,);
return snapshot.hasData
? new porProdutoList(listas: snapshot.data)
: new Center(child: new RefreshProgressIndicator());
},
),
new Expanded(
child: new Align(
alignment: Alignment.bottomCenter,
child: new Padding(padding: new EdgeInsets.only(bottom: 10.0),
child: new RaisedButton(
child: new Text("Relatório Completo",
style: new TextStyle(color: Colors.white, fontSize: 20.0),),
color: Colors.blue,
elevation: 8.0,
splashColor: Colors.lightBlue,
onPressed: () {
Navigator.pushReplacement(
context,
new MaterialPageRoute(
builder: (context) => auxTelaDetalhada),
);
}
),))),
],)
),
);
I want to have this screen in the end of process.
But i have this method:
new FutureBuilder<List<RelatorioProdutos>>(
future: fetchRelatorioPorProduto(new http.Client(),'$dateInicial', '$dateFinal'),
builder: (context, snapshot) {
if (snapshot.hasError) print(snapshot.error);
else
auxTelaDetalhada = RelatorioVendasTotalizadasProdutos(prods: snapshot.data, aondeVoltar: 0,);
return snapshot.hasData
? new porProdutoList(listas: snapshot.data)
: new Center(child: new RefreshProgressIndicator());
},
),
And this method loads a json request, and i need the button to appear only at the end of json request.
So i was tring to put this RaisedButton in the other method return, with this the button appear only on the end of json request. But, i cant align this button when i put it inside the other method.
Other method:
Widget test =
new Column(
children: <Widget>[
listaTiles[0],
listaTiles[1],
listaTiles[2]]);
return test;
Im tring to do this:
Widget test =
new Column(children: <Widget>[
new Column(
children: <Widget>[
listaTiles[0],
listaTiles[1],
listaTiles[2]]),
new Align(
alignment: Alignment.bottomCenter,
child: new Padding(padding: new EdgeInsets.only(bottom: 10.0),
child: new RaisedButton(
child: new Text("Relatório Completo",
style: new TextStyle(color: Colors.white, fontSize: 20.0),),
color: Colors.blue,
elevation: 8.0,
splashColor: Colors.lightBlue,
onPressed: () {
Navigator.pushReplacement(
context,
new MaterialPageRoute(
builder: (context) => auxTelaDetalhada),
);
}
),)),
],);
But i get this:
Anyone have any idea to get this working?
Try this...
This question is answered here Flutter: Trying to bottom-center an item in a Column, but it keeps left-aligning
return new Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
//your elements here
],
);
Though I should write it in the comments but it requires 50 reputation but anyways..
This will help you and if you want to center it then wrap the column in the center widget
Center(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Container(Text("Hello to all", style: TextStyle(fontSize: 60.0)))
],
),
),
This would produce following result. Hope this is what you are looking for:)