How is it possible to align all items to the bottom of a Row in flutter? I have got one widget in the Row which changes its height at runtime and due to that, all other widgets of the Row automatically center themselves, too. My question is: how do you prevent these other widgets from moving and pin them to the bottom?
What you're looking for is CrossAxisAlignment:
Row(
crossAxisAlignment: CrossAxisAlignment.end,
children: <Widget>[
Container(width: 100, height: 200, color: Colors.red),
Container(width: 100, height: 300, color: Colors.blue),
SizedBox(
width: 100,
height: 150,
child: FittedBox(
fit: BoxFit.contain,
child: const FlutterLogo(),
),
),
],
)
Row(
crossAxisAlignment: CrossAxisAlignment.end,
)
I hope you succeeded
Related
I'd like to have a column take the width of the content, and have some elements align to right and some to the left.
Is this possible?
If I use Align widget on the children the whole column stretches in width. Is there another way?
Thank you
Edit: Example
Center(
child: Container(
color: Colors.yellow,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
color: Colors.red,
width: 50,
height: 50,
),
Text('Here goes some text with variable length'),
Container(
color: Colors.blue,
width: 50,
height: 50,
),
],
),
),
);
I want the column above with the red square to the left and the blue to the right (and the column not stretching to the available width).
Try this-
Center(
child: Container(
color: Colors.yellow,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Container(
color: Colors.red,
width: 50,
height: 50,
),
],
),
SizedBox(width: 100),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
Container(
color: Colors.blue,
width: 50,
height: 50,
),
],
),
],
),
),
)
You can simply try to put the contents of the column in a row, so you would have elements inside containers for their width and height as you like.
Column -> Row -> aligned containers.
I need create this UI in my flutter app:
It is row for my list. This is my code:
return Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
CachedNetworkImage(
imageUrl: photoUrl,
imageBuilder: (context, imageProvider) => Container(
height: 112,
width: 90,
),
),
const SizedBox(
width: 14,
),
Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'${title}',
),
Align(
alignment: Alignment.centerLeft,
child: SizedBox(
width: descriptionWidth,
child: Text(
'${shortDescription}',
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
),
Text(
'${footer}',
),
],
)
],
);
I need the test block to occupy a height equal to the image. but when the text is all in the middle, it takes up a lot less height. this is an example of how my code works now:
how do I fix this? How to stretch Column inside Row to maximum available height?
I tried several options but then it breaks the display of multi-line text.
While height is fixed, you can wrap Column with SizedBox(height:112) and to control textOverflow, wrap SizedBox with Expanded.
Expanded(
child: SizedBox(
height: 112,
child: Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Full method
return Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Container(
/// replace with image
height: 112,
width: 90,
color: Colors.red,
),
const SizedBox(
width: 14,
),
Expanded(
child: SizedBox(
height: 112,
child: Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'${title}',
),
Flexible(
child: Text(
'${shortDescription}',
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
Text(
'${footer}',
),
],
),
),
)
],
);
For Maximum Height You can use
Expanded(
child : --- your child widget
)
or
Flexible(
child: -- your child widget
)
A widget that expands a child of a Row, Column, or Flex so that the child fills the available space.
Using an Expanded widget makes a child of a Row, Column, or Flex expand to fill the available space along the main axis (e.g., horizontally for a Row or vertically for a Column). If multiple children are expanded, the available space is divided among them according to the flex factor.
An Expanded widget must be a descendant of a Row, Column, or Flex, and the path from the Expanded widget to its enclosing Row, Column, or Flex must contain only StatelessWidgets or StatefulWidgets (not other kinds of widgets, like RenderObjectWidgets).
First of all, you need to fixed the card height for better positioning of your text with the card image and then expand your column to dynamically handle the multiline of text. ANd you don't need to use the align widget
try the below code
Container(
height: 112, // here you fixed the container height
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
CachedNetworkImage(
imageUrl:
"https://avatars.githubusercontent.com/u/26745548?v=4",
imageBuilder: (context, imageProvider) => Container(
height: 112,
width: 90,
),
),
const SizedBox(
width: 14,
),
Expanded(
// here expand your column
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'title',
),
Text(
'{shortDescription 23487509387 2039487502930349857 03984 5 30498 503498 503948 70293847 50923487503}',
),
Text(
'footer',
),
],
),
)
],
),
)
output:
I have a dilemma that I can't seem to solve. I have an existing row in Flutter. Essentially what I want to accomplish is to have the first element(yellow) at the start of the row, and the second element(red) in the center of the element. I know Row has the mainAxisAlignment, but I need a different alignment for each each element (i.e. both MainAxisAlignment.start & MainAxisAlignment.center). Thanks for any help!
The closest I have been able to come to this is this:
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
yellowElement,
Expanded(child: redElement),
],
);
But this is not perfectly centered, it is centered in the available space left over after yellow has taken its space.
I had this problem few weeks ago and the only solution I found was Stack... like this
Stack(
children: <Widget>[
Container(
color: Colors.grey,
width: 250,
height: 50,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
Container(width: 50, color: Colors.red),
],
),
),
Positioned(
top: 0,
bottom: 0,
child: Container(
width: 20,
color: Colors.yellow,
),
)
],
)
Here is my widget:
return Card(
child: Container(
height: 150,
child: Row(
children: <Widget>[
Placeholder(
fallbackHeight: 100,
fallbackWidth: 100,
),
Container(
width: _deviceHeight,
color: Colors.red,
child: Column(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Flexible(
child: Text(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasssssaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
overflow: TextOverflow.ellipsis,
maxLines: 4,
)),
// Expanded(flex: 8, child: Text("bbb")),
Flexible(child: Text("bbb")),
// Flexible(child: Text("aaa")),
],
),
)
],
),
));
I expected that text will be placed on new line, but I am getting overflow:
Wrap your inner Container with an Expanded to provide it with the available parent constraints, otherwise the Container has infinite height and will result in an overflow (because you are on landscape).
Expanded(
child: Container(
width: _deviceHeight,
color: Colors.red,
child: Column(
...
You could wrap the second element of the Row with Flexible, like this:
Row(
children: <Widget>[
Placeholder(..),
Flexible(
child: Container(
color: Colors.red,
child: Column(...
Inside the Row you need Placeholder to keep its width and Container width to be flexible.
Edit: And you should remove the width of the Container, since it would be flexible and it should take as much as possible to fit the screen.
Is it possible to arrange children vertically in a way that the parent will take the size of its children?
More specifically, here's what I'm trying to do:
Have an icon and a text aligned vertically with a small space between them, centered within a rectangle with a fixed height.
I'd like the size of the vertical container of the text and icon to be according to its children.
Something like FlatButton.icon, only vertical instead of horizontal.
For that inner vertical container, all I found were Column and ListView, both of which take all the height they can get within their parent, rather than take the height of their children.
That sample code should do the job :
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Center(
child: Container(
child: Center(
child: Container(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.star,
size: 50.0,
),
SizedBox(
height: 30,
),
Text(
'Some text',
textAlign: TextAlign.center,
)
],
),
color: Colors.blue,
width: 120)),
width: 300,
height: 300,
color: Colors.green),
),
],
)
Thanks to the mainAxisSize: MainAxisSize.min,