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I am very new to Flutter and I trying to make button fill the entire parent container. I want to create two buttons each of them 50% of device height and 100% width using two Flexible with flex parameters.
This is What I have:
Flexible(
flex: 1,
child: Container(
color: Color.fromARGB(255, 20, 20, 20),
alignment: Alignment.center,
child: ElevatedButton(
child:Text('$_counter1'),
onPressed: _pop1,
),
),
),
Everyday I create websites using CSS and HTML and here in Flutter everything works completly diferent. It's hard to understand the code at the begining. With CSS I cloud only add 100% width and height and done but here I am little bit lost.
This is What I am trying to get:
With flutter, you can use Column, Expanded
Column(
children: [
Expanded(
flex: 1,
child: Container(
color: const Color.fromARGB(255, 20, 20, 20),
alignment: Alignment.center,
child: ElevatedButton(
child: Text('Button 1'),
onPressed: (){},
),
),
),
Expanded(
flex: 1,
child: Container(
color: Colors.green,
alignment: Alignment.center,
child: ElevatedButton(
child: Text('Button 2'),
onPressed: (){},
),
),
),
],
)
you are almost right. Flexible takes only the needed space. if you want to takes all space available like 100% then you need to add another properties for Flexible :
https://stackoverflow.com/a/52646036/12838877
Flexible(
fit: FlexFit.tight,
child: Foo(),
);
or is just shorthand with Expanded
Flexible(
fit: FlexFit.tight,
child: Foo(),
);
for comparison : reff
as you can see, Flexible will only take as minimum space needed.
and by default expanded will take 100% available space.
if you want to modify, you just change the flex value
You could combine Column with cross axis alignment strech to achieve this.
Like so:
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Expanded(
child: Container(
color: Colors.grey,
child: TextButton(
onPressed: () {},
child: Text(
'Button 1',
style: Theme.of(context).textTheme.headline2!.copyWith(
color: Colors.grey.shade700,
),
),
),
),
),
Expanded(
child: Container(
color: Colors.grey.shade700,
child: TextButton(
onPressed: () {},
child: Text(
'Button 2',
style: Theme.of(context).textTheme.headline2!.copyWith(
color: Colors.grey,
),
),
),
),
),
],
Running example:
https://dartpad.dev/?enchanted-pomelo-5708
In appBar I have a container which is responsible for displaying text (it could be 5 chars or even 100). And I want to adjust width of container based on text. For example for 5 chars container should show text and should be a little bigger than text (I will add paddings later), but for 100 chars container should take all possible space and show text with dots.
Currently I have two solutions:
The first one (Without spacer() in tree) is expanding container always to the biggest possible width (like I said, I don't need this big container for short texts)
The second one (with spacer() in tree) is always displaying container with 1/3 width of appbar (Did someone know why it's always the same width? It's kind of interesting).
return Scaffold(
appBar: AppBar(
titleSpacing: 10,
centerTitle: false,
automaticallyImplyLeading: false,
title: SizedBox(
width: MediaQuery.of(context).size.width,
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Container(height: 40, width: 40, color: Colors.amberAccent),
const SizedBox(width: 10),
const Text("Some Text"),
const SizedBox(width: 10),
Expanded(
child: Container(
color: Colors.purpleAccent,
height: 40,
child: const Center(
child: Text(
"text",
overflow: TextOverflow.ellipsis,
softWrap: true,
),
),
),
),
],
),
),
),
body: Container(),
);
So, how can I adjust width of this container to text inside?
Update:
I don't know if I explained it correctly, because your answers weren't related with my question 😁 So I will try again:
I want the last one container to take full possible width if text is long and for shorten texts just width to cover background behind text.
Here is long text: (It should be like that)
Here is short text: (Container should be smaller)
You should use constraints: BoxConstraints(maxWidth:), property of Container.
Please go with below code.
Container(
color: Colors.red,
padding: const EdgeInsets.all(20.0),
constraints: BoxConstraints(
maxWidth: MediaQuery.of(context).size.width * 0.7,
),
child: Text('Hello', style: TextStyle(color: Colors.black)),
),
Spacer(),
Flexible(
child: Container(
color: Colors.purpleAccent,
height: 40,
child: const Center(
child: Text(
"Long Textttttttttttttttttttt",
overflow: TextOverflow.ellipsis,
softWrap: true,
),
),
),
),
Your result will be like below screenshot.
I implement another text for checking dynamic width of container.
Container(
color: Colors.red,
padding: const EdgeInsets.all(20.0),
constraints: BoxConstraints(
maxWidth: MediaQuery.of(context).size.width * 0.7,
),
child: Text('Hello World', style: TextStyle(color: Colors.black)),
),
Spacer(),
Flexible(
child: Container(
color: Colors.purpleAccent,
height: 40,
child: const Center(
child: Text(
"Long Textttttttttttttttttttt",
overflow: TextOverflow.ellipsis,
softWrap: true,
),
),
),
),
For This You can Use :
Flexible Widget:
Example:
Flexible(
child: Container(
color: Colors.green,
)
),
or Wrap Widget :
Example :
Card(
margin: const EdgeInsets.only(top: 20.0),
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
children: <Widget>[
Text(
'Categories',
style: TextStyle(fontFamily: 'MonteSerrat', fontSize: 16.0),
),
Wrap(
children: <Widget>[
_checkBox('Gaming'),
_checkBox('Sports'),
_checkBox('Casual'),
_checkBox('21 +'),
_checkBox('Adult'),
_checkBox('Food'),
_checkBox('Club'),
_checkBox('Activities'),
_checkBox('Shopping')
],
)
],
),
));
I tried adding a width to the container but it didn't do anything. By default it fills the page? Not sure what's happening. Do I have to use MediaQuery somewhere? I want the post to be the same size on both the phone and the tablet. I'm not great with explaining so I added a photo to help.
Here's my code:
body: ListView(
children: [
Container(
height: 132,
decoration: BoxDecoration(borderRadius: BorderRadius.circular(15)),
child: Card(
margin: EdgeInsets.all(10),
elevation: 8,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15)),
child: Column(
children: <Widget>[
ListTile(
leading: CircleAvatar(
backgroundColor: Color(0xFF192A4F),
),
title: SizedBox(
height: 39,
child: TextButton(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
AutoSizeText(
'Username',
style: TextStyle(
color: Color(0xFF192A4F),
fontSize: 16,
fontWeight: FontWeight.bold),
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
],
),
style: TextButton.styleFrom(
padding: EdgeInsets.zero,
minimumSize: Size(50, 30),
alignment: Alignment.centerLeft),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SeventhRoute(),
),
);
},
),
),
),
Divider(
height: 10,
color: Colors.black26,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
Row(
children: <Widget>[
Icon(Icons.comment_outlined,
color: Colors.black),
SizedBox(width: 8.0),
Text(
'Comment',
style: TextStyle(color: Colors.black),
),
],
),
Row(
children: <Widget>[
Icon(Icons.bookmark_outline, color: Colors.black,),
SizedBox(width: 8.0),
Text('Bookmark', style: TextStyle(color: Colors.black),),
],
),
],
),
SizedBox(
height: 12.0,
)
],
),
),
),
],
),
double width = MediaQuery.of(context).size.width;
you can get screen width from here. Then add a logic
As example if screen width of right phone is 500 and left is 1000,
then you can set
if the screen width is <= 500 ,
set the container width as screen width
otherwise
set the container width as 500.
---Additionally---
You can get screen orientation like this
var isPortrait = MediaQuery.of(context).orientation == Orientation.portrait
The reason specifying the width is ignored is because you didn't specify what should happen with the smaller card. The framework doesn't know if it should be aligned left, center, right, etc. To fix this, you can wrap your Card, Container, or even the whole ListView in a Center (or Align) widget.
Based on your images i can see that only the width is changing, height is constant, so i'd suggest in your container give width: MediaQuery.of(context).size.width;
And of course some padding to that container.
It looks like you want that widget to take as much width as it can, but no more than 500px wide. Trivial:
ConstrainedBox(
child: YourChild(...),
constraints: BoxConstraints(maxWidth: 500),
),
I'm trying to make this drawing but I'm struggling.
I don't understand how to make the white block of information dynamic. That is to say that it automatically adapts to the size in height of the elements it contains.
I am for the moment obliged to give a defined height (here 200), I would like the size to be automatic. Moreover if I do not give a defined size my gray line on the left side disappears.
The design :
ListTile(
title : Column(
children: [
Container(
width: double.infinity,
child: Row(
children: [
Container(
width: 50,
alignment: Alignment.center,
child: Container(
width: 20,
height: 20,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(40),
border: Border.all(
width: 5,
color: Colors.blue,
style: BorderStyle.solid
)
),
),
),
Text('9:00 am - 9:15 am')
],
)
),
Container(
child: IntrinsicHeight(
child: Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Container(
width : 50,
alignment: Alignment.center,
child: IntrinsicHeight(
child: Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
color: Colors.grey,
width: 3,
height : 200 // if I remove the size it desappear
),
],
),
),
),
Expanded(
child: Container(
margin: EdgeInsets.symmetric(vertical :10),
padding: EdgeInsets.symmetric(vertical: 20, horizontal: 10),
color: Colors.white,
child: Column(
children: [
Text('Titre'),
Text('Info 1'),
Text('Info 2')
],
),
),
)
],
),
),
)
],
),
),
You can try this package for timelines https://pub.dev/packages/timeline_tile.
This package also automatically Sizes your widget height and width.
And for Automatically Sizing your widgets next time, You could use Expanded widget at most places in your code.
Note: An Expanded widget must be a descendant of a Row, Column, or Flex, So Use it carefully.
I think it's much easier with this package, timelines.
TimelineTileBuilder.connected(
connectionDirection: ConnectionDirection.before,
itemCount: processes.length,
contentsBuilder: (_, index) {
//your Container/Card Content
},
indicatorBuilder: (_, index) {
if (processes[index].isCompleted) {
return DotIndicator(
color: Color(0xff66c97f),
child: Icon(
Icons.check,
color: Colors.white,
size: 12.0,
),
);
} else {
return OutlinedDotIndicator(
borderWidth: 2.5,
);
}
},
connectorBuilder: (_, index, ___) => SolidLineConnector(
color: processes[index].isCompleted ? Color(0xff66c97f) : null,
),
),
),
I have been trying to make a button in AlertDialog box in Flutter. But I cannot find a way to stretch the button container. Please check my code and see the example picture below.
AlertDialog(
title: Center(child: Text("Picture")),
content: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
width: width,
//height: height,
child: FadeInImage.memoryNetwork(
placeholder: kTransparentImage,
image: image.url,
),
),
SizedBox(
height: 10,
),
InkWell(
onTap: () {
Navigator.pop(context);
},
child: Container(
alignment: Alignment.center,
height: 50,
width: width,
color: primaryColor,
child: Text(
'Okay',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold),
),
),
),
],
),
);
Please help me in this. I am looking forward to hearing your opinion. Thank you in advance.
The AlertDialog has a default content padding of 24 logical pixels to the right, left and bottom of the AlertDialog to separate the content from the other edges of the dialog..
To Make the Button fit the AlertDialog width, you will need to give the AlertDialog a padding of zero and apply paddings to others widgets except the Button.
I added an example using your code:
AlertDialog(
// change the default padding to zero
contentPadding: EdgeInsets.zero,
title: Center(child: Text("Picture")),
content: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
// wrap your container with a padding widget
Padding(
padding: const EdgeInsets.all(20.0), // give a preferred padding
child: Container(
width: width,
//height: height,
placeholder: kTransparentImage,
image: image.url,
),
),
),
SizedBox(
height: 10,
),
InkWell(
onTap: () {
Navigator.pop(context);
},
child: Container(
alignment: Alignment.center,
height: 50,
width: width,
color: primaryColor,
child: Text(
'Okay',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold),
),
),
),
],
),
);