flutter - row with elements of unequal weight - flutter

Question

I have a row that spans the width of the screen and with three buttons and a text that are equally spaced(flex = 1). I want the text to be aligned to the center of the screen and the buttons at the ends. is this possible?

Answer 1

To cause a child to expand to fill the available space in the direction of this widget's main axis, wrap the child in an Expanded widget.
So you can try Expanded and declare Flex in second Expanded widget.
Solution
Row(
children: <Widget>[
Expanded(child: Container(padding: EdgeInsets.all(16),color: Colors.red,child: Text("text 1"))),
Expanded(flex: 3,child: Container(padding: EdgeInsets.all(16),color: Colors.blue,child: Text("text 2"))),
Expanded(child: Container(padding: EdgeInsets.all(16),color: Colors.yellow,child: Text("text 3"))),
Expanded(child: Container(padding: EdgeInsets.all(16),color: Colors.green,child: Text("text 4"))),
],
),
Output:

Answer 2

Hey check the code bellow I think it does what you want:
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter buttons demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key}) : super(key: key);
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
#override
void initState() {
super.initState();
}
List<int> values = [1, 2, 3];
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Buttons demo'),
centerTitle: true,
),
body: Row(
children: <Widget>[
Flexible(
child: Container(
color: Colors.redAccent,
child: FlatButton(
onPressed: () => {},
child: Text('Button'),
),
),
),
Expanded(
flex: 2,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
'Some text',
textAlign: TextAlign.right,
),
)),
Flexible(
child: Container(
color: Colors.green,
child: FlatButton(
onPressed: () => {},
child: Text('Button'),
),
),
),
Flexible(
child: Container(
color: Colors.purple,
child: FlatButton(
onPressed: () => {},
child: Text('Button'),
),
),
),
],
));
}
}

Answer 3

There are a few ways. The simplest I can think of is using a SizedBox widget.
In your example, you can use the SizedBox widget and add one additional box with the same dimensions as your left button on the left. The SizedBox will occupy the space but won't be rendered on screen.