Align stack elements flutter - flutter

Question

I have started using flutter a couple of days ago & working on an application in which trying to place a title at the center of the screen & the image at the right corner of the screen. I have the following code. But it doesn't seem to work.
return Scaffold(
body: SafeArea(
child: Padding(
padding: const EdgeInsets.only(top: 30),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Stack(
children: <Widget>[
Container(
child: ClipRRect(
borderRadius: BorderRadius.circular(10),
child: Text(
"Launching",
textAlign: TextAlign.center,
style: GoogleFonts.poppins(
fontWeight: FontWeight.w700, fontSize: 18),
),
),
),
Container(
child: CircleAvatar(
backgroundImage: NetworkImage(
"https://cdn.pixabay.com/photo/2015/12/01/20/28/fall-1072821__340.jpg"),
),
),
],
)
],
),
),
),
Can somebody tell me how can I achieve this?

Answer 1

I think this is what you are trying to achieve:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
debugShowCheckedModeBanner: false,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
body: SafeArea(
child: Padding(
padding: const EdgeInsets.only(top: 30),
child: Stack(
alignment: Alignment.center,
children: <Widget>[
Container(
child: ClipRRect(
borderRadius: BorderRadius.circular(10),
child: Text(
"Launching",
textAlign: TextAlign.center,
),
),
),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Container(
child: CircleAvatar(
backgroundImage: NetworkImage(
"https://cdn.pixabay.com/photo/2015/12/01/20/28/fall-1072821__340.jpg"),
),
),
],
)
],
),
),
),
),
);
}
}
which produces the following outcome:

Answer 2

When working with Stack you should only use Positioned, Align & Center widgets to position your widgets.
Example app:
void main() {
runApp(
MaterialApp(
title: 'Flutter To Do',
theme: ThemeData(primarySwatch: Colors.blue),
home: Scaffold(
body: Stack(
children: <Widget>[
Align(
alignment: Alignment.center,
child: Text(
"center",
),
),
Align(
alignment: AlignmentDirectional.centerStart,
child: Text('start'),
),
Positioned(
left: 16,
top: 16,
width: 64,
height: 64,
child: CircleAvatar(
backgroundImage: NetworkImage(
"https://cdn.pixabay.com/photo/2015/12/01/20/28/fall-1072821__340.jpg"),
),
),
],
),
),
),
);
}
Result:

Answer 3

Just use alignment property of the container.
I have changed the code for you, hope it helps:
Scaffold(
body: SafeArea(
child: Padding(
padding: const EdgeInsets.only(top: 30),
child: Stack(
children: <Widget>[
Container(
alignment: Alignment.center,
child: ClipRRect(
borderRadius: BorderRadius.circular(10),
child: Text(
"Launching",
textAlign: TextAlign.center,
),
),
),
Container(
margin: EdgeInsets.symmetric(horizontal: 30),
alignment: Alignment.topRight,
child: CircleAvatar(
backgroundImage: NetworkImage(
"https://cdn.pixabay.com/photo/2015/12/01/20/28/fall-1072821__340.jpg"),
),
),
],
),
),
));