I am trying to have a grouped button with two individuals and place them in the bottom. It is a login screen so there are other things.
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: SafeArea(
child: Center(
child: Column(
children: <Widget>[
SizedBox(
height: 75.0,
),
Text('Login'),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
color: Colors.orange,
onPressed: () {
print('login');
},
),
RaisedButton(
onPressed: () {
print('signup');
},
),
],
),
],
),
),
),
);
}
}
I've been trying with like align bottom and stuffs. But with Row(), it does not work with Center + Column widget. How can I send these two buttons to the bottom of the Center widget?
There are multiple ways to do this. One of them is to use the Spacer widget:
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: SafeArea(
child: Center(
child: Column(
children: <Widget>[
SizedBox(
height: 75.0,
),
Spacer(),
Text('Login'),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
color: Colors.orange,
onPressed: () {
print('login');
},
),
RaisedButton(
onPressed: () {
print('signup');
},
),
],
),
],
),
),
),
);
Another one would be to reverse the column and start from the bottom, but most probably the side effects are not wanted.
Also, one option would be to divide the whole screen into fixed height partitions with the help of MediaQuery.of(context).size.height value so that your buttons are always at the bottom.
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: SafeArea(
child: Center(
child: Column(
children: <Widget>[
SizedBox(
height: 75.0,
),
Text('Login'),
Expanded(
child:Container
(
alignment: Alignment.bottomCenter,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
color: Colors.orange,
onPressed: () {
print('login');
},
),
RaisedButton(
onPressed: () {
print('signup');
},
),
],
),
)
)
],
),
),
),
);
}
Related
I'm new on flutter and I don't have an idea why ElevatedButton stretched and become a background. I just want a simple button. How can I solve this problem? Here's the image below:
Here's my code
#override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: ElevatedButton(
onPressed: () {
Navigator.pop(context);
},
child: SafeArea(
child: Center(
child: Column(
children: [
Image.asset(
'profile_image.jpg', height: 150, width: 150,),
const SizedBox(height: 15,),
Text("Hello World"),
const SizedBox(height: 15,),
const Text('Go back'),
],
)
)
),
),
)
);
}
}
You are using button on body. that's why full body acting as button.
body: Center(
child: ElevatedButton(
What you seek is just wrapping the Text('Go back')), with ElevatedButton.
return Scaffold(
body: Center(
child: SafeArea(
child: Center(
child: Column(
children: [
Image.asset(
'profile_image.jpg',
height: 150,
width: 150,
),
const SizedBox(
height: 15,
),
Text("Hello World"),
const SizedBox(
height: 15,
),
ElevatedButton(
onPressed: () {
// Navigator.pop(context);
},
child: const Text('Go back')),
],
))),
));
I want to put a widget onto other's view.
Here is what I did
In normal version without countdown timer, there is no whitespace inside the screen. It is %50 %50 divided by colours(red and blue).
What I want to do is adding that countdown timer without creating whitespace. Directly adding it onto those colours on the center.
I saw that with Stack it is possible to do. I tried it but couldn't remove the white area.
Here is my code:
#override
Widget build(BuildContext context) {
return Scaffold(
body: new Column(
children: [
Expanded(
flex: 40,
child: new Container(
width: double.infinity,
child: new Column(
children: <Widget>[
box1 = new Expanded(
flex: boxSize1,
child: InkWell(
onTap: () {
clickBox1();
}, // Handle your callback
child: new Container(
alignment: Alignment.topCenter,
color: colorRandom,
),
),
),
TimeCircularCountdown(
unit: CountdownUnit.second,
countdownTotal: 3,
onUpdated: (unit, remainingTime) => print('Updated'),
onFinished: () {
setState(() {
visibility = false;
});
},
),
box2 = new Expanded(
flex: boxSize2,
child: InkWell(
onTap: () {
clickBox2();
}, // Handle your callback
child: new Container(
alignment: Alignment.topCenter,
color: color,
),
),
),
],
),
),
),
],
),
);
#override
Widget build(BuildContext context) {
return Scaffold(
body: Stack(
children: [
Column(
children: [
Expanded(
child: Container(
color: Colors.blue,
)),
Expanded(
child: Container(
color: Colors.red,
)),
],
),
Center(
child: Container(
height: 200,
width: 200,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(100),
color: Colors.white,
),
// use your countdown timer widget in child
),
)
],
),
);
}
AnimatedContainer(
...
child: Container(
child: Column(
children: [
Row(
children: [
Container(
width:60,
height:50,
color: Colors.black,
),
],
),
Expanded(
child: GestureDetector(
onTap: () {
print('what');
},
child: Container(
height: 50,
child: Column(
children: [
Expanded(
child: Text('asdf'),
),
Expanded(
child: IconButton(
icon: Icon(Icons.ac_unit),
onPressed: () {},
),
I have this AnimatedContainer widget here. My Text() widget and RaisedButton widget are hidden inside the box. They appear as the AnimatedContainer expand. However, my IconButton doesn't.
Also, Icon widget also stays like IconButton widget. How can I make it appear when the AnimatedContainer is stretched like the Text widget?
I've modified your code, hope this is what u want.
class _RowStructureState extends State<RowStructure> {
bool pressed = false;
#override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () {
setState(() {
pressed = !pressed;
});
print(pressed);
},
child: Column(children: <Widget>[
AnimatedContainer(
height: pressed ? 120 : 50,
color: Colors.green,
duration: Duration(seconds: 1),
child: Stack(
children: [
Container(
height: 50,
width: 50,
color: Colors.black,
),
Positioned(
bottom:0,
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Text('asd'),
IconButton(
padding: EdgeInsets.all(0),
icon: Icon(Icons.ac_unit,),
onPressed: pressed?(){}:null,
),
],
),
)
],
),
)
]),
);
}
}
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),
),
),
),
),
),
);
}
}
I am trying to extract re-use a simple widget that is then referenced in parent widget. The custom widget simply uses a row to layout a textField and a button, and below this I Want to have a listview showing items. I then embed in the customwidget in parent, but it continually throws Error. I have not figured out how to get the custom widget working where I can use ListView or column layout inside. Below is the 2 simplified widgets that demo the issue.
Here is the parent widget, which is where I call the custom widget PlayListControl()
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('My Playlists'),
),
body: Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
textDirection: TextDirection.ltr,
children: <Widget>[
Container(
alignment: Alignment.center,
margin: EdgeInsets.all(20),
child: Text('Test'),
),
PlayListControl(),
],
),
),
drawer: SideDrawer(),
);
}
}
And here is the playlistcontrol widget.
#override
Widget build(BuildContext context) {
return Container(
margin: EdgeInsets.all(10),
child: Column(
children: <Widget>[
Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
width: 200,
child: TextField(),
),
ButtonTheme(
minWidth: 30,
child: RaisedButton(
textColor: Colors.white,
child: Text('add'),
onPressed: () {},
)),
],
),
),
Expanded(
child: ListView(
children: <Widget>[
Text('Widget 1'),
Text('Widget 2'),
],
),
)
],
),
);
}
}
No matter what I try, it always complains about layout issue related to height. I would have thought wrapping the ListView in Expanded would solve the issue, but it doesn't. Only if I use a container and specify height do I not get the errors, but I want to use whatever available space there is.
How can I get this playlistcontrol() widget to properly render inside a parent control?
you forgot to wrap the first container of PlayListControl in Expanded widget..
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
home: Scaffold(
appBar: AppBar(
title: Text('My Playlists'),
),
body: Container(
child: Column(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.start,
textDirection: TextDirection.ltr,
children: <Widget>[
Container(
alignment: Alignment.center,
margin: EdgeInsets.all(20),
child: Text('Test'),
),
PlayListControl(),
],
),
),
));
}
}
class PlayListControl extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Expanded(
child: Container(
margin: EdgeInsets.all(10),
child: Column(
children: <Widget>[
Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
width: 200,
child: TextField(),
),
ButtonTheme(
minWidth: 30,
child: RaisedButton(
textColor: Colors.white,
child: Text('add'),
onPressed: () {},
)),
],
),
),
Expanded(
child: ListView(
children: <Widget>[
Text('Widget 1'),
Text('Widget 2'),
],
),
)
],
),
),
);
}
}