I'm trying to center both texts, and for the T text to take as much height as possible from the parent so the only space remaining will be the container's paddings.
The code:
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
runApp(TestApp());
}
class TestApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
// Remove status bar
SystemChrome.setEnabledSystemUIOverlays([]);
return MaterialApp(
home: Scaffold(
body: _body(),
),
);
}
Widget _body() => Container(
width: 200,
height: 200,
padding: EdgeInsets.all(16),
color: Colors.lightBlueAccent,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Expanded(
child: Container(
color: Colors.lightGreen,
child: FittedBox(
fit: BoxFit.contain,
child: Text("T"),
),
),
),
Flexible(
child: Text("subtitle"),
)
],
),
);
}
As you can see in the screenshot there are undesired paddings in the T text:
Related
I have a Column: child: Column( children: [ Container( height: 200, width: 300, color: Colors.red, ), Align( alignment: Alignment.bottomCenter, child: Text("This Product is Built By Imtiaz")), ], ),
I want to Expand Column to print Text At Bottom Of Screen
You could put a Spacer() between your Text widget and your Container widget
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Scaffold(
body: Center(
child: Column(
children: [
Container(
height: 200,
width: 300,
color: Colors.red,
),
Spacer(),
Text("This Product is Built By Imtiaz"),
],
),
),
),
);
}
}
I like to increase the height of the widget "B" so the orange color use the same space like the green color. I have added a code example.
If a added Extended() like Expanded(Container(Text('B'))) the full horizontal space of the screen is used.
If a added Extended() like Column(Expanded(Container(Text('B')))) the full vertical space of the screen is used.
Does someone has a hint?
Thank you in advance!
Gretings
Michael
Problem:
Goal:
Code:
import 'package:flutter/material.dart';
void main() {
runApp(DemoX());
}
class DemoX extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: SafeArea(
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Container(
color: Colors.red,
child: Container(
color: Colors.green,
child: Text('A1\nA2'),
),
),
Container(
color: Colors.orange,
child: Text('B'),
),
],
),
),
),
);
}
}
Screenshot
Code:
#override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: IntrinsicHeight(
child: Row(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Container(
color: Colors.green,
child: Text('A1\nA2'),
),
Container(
color: Colors.orange,
child: Text('B'),
),
],
),
),
),
);
}
Hi guys i'm try to make this on flutter: img
i'm try with that code, but work
Container(
child: Positioned(top:0, left:0)
)```
as an option you can use Stack as container for card widget + image
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Center(
child: Stack(
children: <Widget>[
Card(
color: Colors.blueAccent,
child: Container(
width: 300,
height: 80,
),
),
FractionalTranslation(
translation: Offset(0, -0.5),
child: Icon(Icons.android, size: 48),
),
],
),
),
),
);
}
}
I'm trying to build a List of Card's that contain a Stack widget, the Card + Stack Widget works just fine until I make it the child of a list view, and then the Stack no longer sizes automatically to its largest child. This is causing my view that should be aligned to the bottom right to only be right aligned instead since the bottom of the Stack isn't sized correctly.
I've tried wrapping all the children of the Stack with an Align, but that didn't help either. Positioned has the same results as Align.
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Stack Demo',
home: MyHomePage(),
);
}
}
class MyHomePage extends StatelessWidget {
#override
Widget build(BuildContext context) => Scaffold(
body: ListView(
children: <Widget>[
_buildCard(context),
_buildCard(context),
_buildCard(context),
_buildCard(context),
_buildCard(context),
_buildCard(context),
],
),
);
Widget _buildCard(BuildContext context) => Card(
child: Stack(
children: <Widget>[
SizedBox(
height: 200,
child: Container(
color: Colors.black,
),
),
Align(
alignment: Alignment.bottomRight,
child: SizedBox(
height: 50,
width: 50,
child: Container(
color: Colors.red,
),
),
),
],
),
);
}
What I'd expect to happen, is the Stack would size correctly around the black container allowing the red container to be positioned at the bottom right of the card.
try to set the alignment on the stack too
alignment: AlignmentDirectional.bottomEnd,
like this one
Widget _buildCard(BuildContext context) => Card(
child: Stack(
alignment: AlignmentDirectional.bottomEnd,
children: <Widget>[
SizedBox(
height: 200,
child: Container(
color: Colors.black,
),
),
Align(
alignment: Alignment.bottomRight,
child: SizedBox(
height: 50,
width: 50,
child: Container(
color: Colors.red,
),
),
),
],
),
);
screenshot
I'm still having a bit of trouble with the layouting in Flutter.
Right now I want to have the available space shared between 3 widgets, in a quadrant layout.
The width is evenly shared (this works fine via 2 Expanded widgets in a Row), but now I also want the height to adjust automatically so widget3.height == widget1.height + widget2.height.
If the content of widget3 is larger, I want widget1 and widget2 to adjust their height and vice versa.
Is this even possible in Flutter?
Have a look at IntrinsicHeight; wrapping the root Row should provide the effect you're looking for:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(title: Text('Rows & Columns')),
body: RowsAndColumns(),
),
);
}
}
class RowsAndColumns extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.only(top: 100.0),
child: IntrinsicHeight(
child: Row(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
Expanded(
child: Column(children: [
Container(height: 120.0, color: Colors.yellow),
Container(height: 100.0, color: Colors.cyan),
]),
),
Expanded(child: Container(color: Colors.amber)),
]),
),
);
}
}
Adjusting the heights in the containers in the column cause the container on the right to resize to match:
https://gist.github.com/mjohnsullivan/c5b661d7b3b4ca00599e8ef87ff6ac61
I think that you can set the height of the row instead, then you only must to set the height of you column containers, and with the crossAxisAlignment: CrossAxisAlignment.stretch the second row will be expand occupying his parent height:
Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Expanded(
child: Column(
children: [
Expanded(
// If you don't have the height you can expanded with flex
flex: 1,
child: Container(
height: 50,
color: Colors.blue,
),
),
Expanded(
flex: 1,
child: Container(
height: 50,
color: Colors.red,
),
)
],
),
),
Expanded(
child: Container(
color: Colors.yellow,
),
)
],
)
Since IntrinsicHeight is considered relatively expensive, it's better to avoid it. You can use Table with verticalAlignment: TableCellVerticalAlignment.fill in the largest TableCell.
Please note that if you use .fill in all cells, the TableRow will have zero height.
Table(children: [
TableRow(children: [
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Container(
alignment: Alignment.center,
color: Colors.blue,
child: Text('Widget 1'),
),
Container(
alignment: Alignment.center,
color: Colors.green,
child: Text('Widget 2'),
),
],
),
TableCell(
verticalAlignment: TableCellVerticalAlignment.fill,
child: Container(
alignment: Alignment.center,
color: Colors.orange,
child: Text('Widget 3'),
)),
]),
]),
I'm new to flutter. Please correct me if I'm doing something wrong here. I think It can also be achieved using setState((){}) without using IntrinsicHeight.
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
#override
State<StatefulWidget> createState() {
return MyAppState();
}
}
class MyAppState extends State<MyApp> {
#override
Widget build(BuildContext context) {
double h1 = 100;
double h2 = 200;
double h3;
setState(() {
h3 = h1 + h2;
});
return MaterialApp(
home: Scaffold(
body: SafeArea(
child: Padding(
padding: const EdgeInsets.only(top: 100.0),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
child: Column(
children: [
Container(
color: Colors.green,
height: h1,
),
Container(
color: Colors.orange,
height: h2,
)
],
),
),
Expanded(
child: Container(
color: Colors.yellow,
height: h3,
),
)
],
),
),
),
),
);
}
}
Find image here
Code can also be found here: https://gist.github.com/Amrit0786/9d228017c2df6cf277fbbaa4a6b20e83
if you have used the expanded inside Row and facing for full height issue then just wrap the expanded child with Align widget.