How to avoid overflow by using SingleChildScrollView - flutter

Question

I am very new with flutter and im very stuck in a positioning.
Does anybody know where should I place the "SingleChildScrollView"? I get stack overflow 148PX.
my code looks like this,i tried in all the posible ways, but i still didnt managed how to fix it.
I can't understand where should i put the body :
class SignUp extends StatefulWidget {
#override
_SignUpState createState() => _SignUpState();
}
class _SignUpState extends State<SignUp> {
#override
Widget build(BuildContext context) {
return Scaffold(
body: Column(
children: [
Container(
alignment: Alignment.bottomCenter,
width: 400,
height: 350,
decoration: BoxDecoration(
image: DecorationImage(
image: ExactAssetImage('assets/images/qlogo1.png'))),
),
SizedBox(height: 1),
Container(
alignment: Alignment.bottomCenter,
padding: EdgeInsets.symmetric(horizontal: 40),
child: Column(
children: [
TextField(
style: mediumTextStyle(),
decoration: textFieldInputDecoration('username'),
),
TextField(
style: mediumTextStyle(),
decoration: textFieldInputDecoration('password'),
),
],
),
),
SizedBox(
height: 25,
),
// creaza spatii intre containere
Container(
alignment: Alignment.centerRight,
child: Container(
padding: EdgeInsets.symmetric(horizontal: 37, vertical: 8),
child: Text(
'Forgot Password?',
style: TextStyle(
color: Colors.white,
fontSize: 14,
fontFamily: 'Quicksand',
decoration: TextDecoration.underline),
)),
),
SizedBox(height: 24),
Container(
alignment: Alignment.center,
width: MediaQuery.of(context).size.width - 70,
padding: EdgeInsets.symmetric(vertical: 20),
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [const Color(0xFFF06292), const Color(0xff2A75BC)]),
borderRadius: BorderRadius.circular(30),
),
child: Text(
'Sign In',
style: mediumTextStyle(),
),
),
SizedBox(
height: 16,
),
Container(
alignment: Alignment.center,
width: MediaQuery.of(context).size.width - 70,
padding: EdgeInsets.symmetric(vertical: 20),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(30),
),
child: Text('Register',
style: TextStyle(
color: Colors.black87,
fontFamily: 'Quicksand',
fontSize: 17)),
),
],
),
);
}
}
Thank you!

Answer 1

If you want all you screen to be scrolled - do this:
return Scaffold(
body: SingleChildScrollView(
child: Column(
// your other code
)
)
);