class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Center(
child: CircleAvatar(
radius: 40.0,
child: Image.asset('images/pic.jpg'),
),
),
Text(
"michael dub",
),
Text("FLUTTER DEVELOPER"),
Container(
width: 350.0,
height: 70.0,
child: Card(
child: Row(
children: <Widget>[
Icon(
Icons.phone,
),
Text(
"+12-345-678-910",
textAlign: TextAlign.center,
),
],
)))
],
),
),
);
}
}
in your column, try crossAxisAlignment: CrossAxisAlignment.stretch
EDIT:
if you're trying to do what I think you're trying to do, try adding
mainAxisAlignment: MainAxisAlignment.center
to your row
you need to wrap your text widget with Expanded widget. Default Row Widget will not take full width and it is creating issue.
Check out following code.
Expanded(
child: Text(
"+12-345-678-910",
textAlign: TextAlign.center,
),
),
Related
import 'package:flutter/material.dart';
void main() => runApp(HomePage());
class HomePage extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("Home"),
),
body: GridView(
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
),
children: [
Container(
color: Colors.blue,
child: Column(
mainAxisAlignment: MainAxisAlignment.end,
mainAxisSize: MainAxisSize.min,
children: [
ButtonBar(
children: <Widget>[
FlatButton(
child: Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Center(
child: Text(
"ljsdgnvsdnv",
textAlign: TextAlign.center,
style: TextStyle(fontSize: 18),
),
),
Text(
"sljdvnldnvsdb",
style: TextStyle(fontSize: 15),
),
],
),
height: 60,
width: 600,
color: Colors.orange,
),
onPressed: () {
print("Buton");
},
),
],
)
],
),
),
],
),
),
);
}
}
I can't set the height of my containers after some limit(also the widht of the second container), it doesn't give any errors but at the same time it doesn't change it's height. In flutter inspector their height and widht values are the values which are I assigned but it doesn't look like it. What should I do? (Text are random)
I just tried your code and didn't find any error while running it. But if the error that you are talking about are linked with the size of the container and some limit that you have added, than it's because you are trying to create an widget bigger than the zone that contain the widget.
You should check the limit that you have by trying:
mainAxisSize: MainAxisSize.max,
And than you could give value that are within the zone.
The content inside the column didnt go center,i dont want to use center widget all i want is to make the widget list go center
class Body extends StatelessWidget {
Widget build(BuildContext context) {
Size size = MediaQuery.of(context).size;
// == size provide height and width from screen
return Background(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
"Welcome to my App",
style: TextStyle(fontWeight: FontWeight.bold, color: kPrimaryColor,),
),
SvgPicture.asset(
"assets/icons/chat.svg",
height: size.height * 0.45,
),
FlatButton(
onPressed: (){},
child: Text("LOGIN", style: TextStyle(color: Colors.white),),
color: kPrimaryColor,
padding: EdgeInsets.symmetric(vertical: 20,horizontal: 40),
)
],
),
);
}
}
This will help you.
Column(
mainAxisAlignment:MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Text('text'),],
)
Or try with a list view
Scaffold(
appBar: new AppBar(),
body: Center(
child: new ListView(
shrinkWrap: true,
padding: const EdgeInsets.all(20.0),
children: [
Center(child: new Text('your content'))
]
),
),
);
Or you can use the Align widget
return Scaffold(
body: ListView( // your ListView
children: <Widget>[
Align(
alignment: Alignment.centerLeft,
child: _button("Left"),
),
Align(
alignment: Alignment.center,
child: _button("Middle"),
),
Align(
alignment: Alignment.centerRight,
child: _button("Right"),
),
],
),
);
How to resolve child duplication error:
Error: Duplicated named argument 'child'.
child: CenteredView(
This is my code:
Container(
child: RaisedButton(
onPressed: (){},
child: Text(
'Alcoholic Beverages',
style: TextStyle(
decoration:TextDecoration.underline,
fontSize: 25,
),
),
),
child: CenteredView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
NavigationBar()
]
)
)
),
]
),
);
}
}
In your Container you have two child, when Container widget can take only a single child. So you need to use some widget that can have more than one child. Column and Row allows you to do that.
Check this link to read more about multi-child widget, unlike Container, which is single-child widget, Column and Row are Multi-child widget.
Multi-Child Widget
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
class selClass extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: sel(),
);
}
}
class sel extends StatefulWidget {
#override
_selState createState() => _selState();
}
class _selState extends State<sel> {
String _date = "Not set";
#override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(child:SingleChildScrollView(
child: Container( child: Column (
children: [
RaisedButton(
onPressed: (){},
child: Text(
'Alcoholic Beverages',
style: TextStyle(
decoration:TextDecoration.underline,
fontSize: 25,
),
),
),
CenteredView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
NavigationBar()
]
),
),
]
),
);
}
}
Container can have only One Child . That's why you're getting this error. You need to Column if your view is vertical or Row if your view is horizontal. Use this to solve your problem:
Column :
Container(
child: Column(
children: [
RaisedButton(
onPressed: () {},
child: Text(
'Alcoholic Beverages',
style: TextStyle(
decoration: TextDecoration.underline,
fontSize: 25,
),
),
),
CenteredView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[NavigationBar()])),
],
),
),
);
}
}
OR
Row :
Container(
child: Row(
children: [
RaisedButton(
onPressed: () {},
child: Text(
'Alcoholic Beverages',
style: TextStyle(
decoration: TextDecoration.underline,
fontSize: 25,
),
),
),
CenteredView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[NavigationBar()])),
],
),
),
);
}
}
Container widget can only have one child.
To lay out multiple children, let this widget's child be a widget such as Row, Column, or Stack.
Hello I am new on flutter and I am currently working on a design which I saw but the problem is that I am having issue on putting the Icon on the right side and the Row is not same size as others. I hope you can help me so it will broaden my knowledge on this flutter. I just started Flutter this week.
Design intended :
Current work :
Code :
#override
Widget build(BuildContext context) {
// TODO: implement build
Widget titleText = Container(
padding: const EdgeInsets.all(32),
child: Center(
child: Text('Select Screen Lock',style: TextStyle(fontSize: 32.0,fontWeight: FontWeight.bold),),
)
);
Widget subTitleText = Container(
padding: const EdgeInsets.all(32),
child: Center(
child: Text('Secure your phone with a screen lock style,',style: TextStyle(fontSize: 16,fontWeight: FontWeight.normal),),
),
);
Widget selectionContainer = Container(
width: 200,
child: IntrinsicWidth(
child: Column(
children: <Widget>[
_selectMenu('Password'),
_selectMenu('Pin Code'),
_selectMenu('Finger Print')
],
),
)
);
return MaterialApp(
home: Scaffold(
body: ListView(
children: <Widget>[
titleText,
subTitleText,
Center(
child:
selectionContainer,
)
],
),
),
);
}
Column _selectMenu(String title){
return Column(
children: <Widget>[
Row(
children: <Widget>[
Text(title), Icon(
Icons.arrow_forward_ios,
color: Colors.grey,
size: 16,
)
],
)
],
);
}
Problem here:
Column _selectMenu(String title){
return Column(
children: <Widget>[
Row(
children: <Widget>[
Text(title), Icon(
Icons.arrow_forward_ios,
color: Colors.grey,
size: 16,
)
],
)
],
);
First of all, remove Column(why we need it here?), and add space between items(please check mainAxisAlignment and crossAxisAlignment), then we get
Widget _selectMenu(String title){
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text(title), Icon(
Icons.arrow_forward_ios,
color: Colors.grey,
size: 16,
)
]);
I am trying to use Expand widget in Column so user can tap in any position of screen to increase counter, but there is an issue in alignment of text in crossAxisAlignment and mainAxisAlignment of the column it didn't apply on Expand widget as the following
return MaterialApp(
home: Scaffold(
backgroundColor: Colors.black12,
body: SafeArea(
child: Center(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Expanded(
child: GestureDetector(
onTap: () {
setState(() {
i++;
print(i);
});
},
child: Text(
i.toString(),
style: TextStyle(fontSize: 50.0, color: Colors.blueAccent),
textAlign: TextAlign.center,
),
),
),
],
),
),
),
),
);
You went with the wrong approach because you can't Center an Expanded because Expanded takes the entire available space inside Row or Column in your case Column with single Widget inside children the GestureDetector. Here is one of a solution for what you want to achieve
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black12,
body: SafeArea(
child: Center(
child: Stack(
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Expanded(
child: GestureDetector(
onTap: () {
setState(() => i++;);
},
),
),
],
),
Align(
alignment: Alignment.center,
child: Text(
'$i',
style: TextStyle(fontSize: 50.0, color: Colors.blueAccent),
),
),
],
),
),
),
);
}
another solution using FlatButton inside SizedBox.expand()
so you don't need to fight with a single child column.
class _MyAppState extends State<MyApp> {
int i = 0;
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
backgroundColor: Colors.black12,
body: SafeArea(
child: SizedBox.expand(
child: FlatButton(
onPressed: () {
setState(() {
i++;
print(i);
});
},
child: Text(
i.toString(),
style: TextStyle(fontSize: 50.0, color: Colors.blueAccent),
),
),
),
),
),
);
}
}