How center widget behave as a parent? - flutter

Question

By default,center widget take its child and center it in itself.But in my case it is not working.I want to center my Column which contain multiple rows so we rap our column in a center widget.
Center widget should take column as a child and center it.But its behave unexpectedly.
Here is my code
child: Column(
children: <Widget>[
Row(
children: <Widget>[
//This is widget 1
Expanded(
child: Text(
"Spice Jet",
textDirection: TextDirection.ltr,
style: TextStyle(
decoration: TextDecoration.none,
fontFamily: 'Raleway',
fontSize: 35.0,
color: Colors.white,
fontWeight: FontWeight.w700,
),
),
),
//This is widget 2
Expanded(
child: Text(
"From Mubabi to Banglore via New dehli",
textDirection: TextDirection.ltr,
style: TextStyle(
decoration: TextDecoration.none,
fontFamily: 'Raleway',
fontSize: 20.0,
color: Colors.white,
fontWeight: FontWeight.w700,
),
),
),
],
),
Row(
children: <Widget>[
//This is widget 1
Expanded(
child: Text(
"Air India",
textDirection: TextDirection.ltr,
style: TextStyle(
decoration: TextDecoration.none,
fontFamily: 'Raleway',
fontSize: 35.0,
color: Colors.white,
fontWeight: FontWeight.w700,
),
),
),
//This is widget 2
Expanded(
child: Text(
"From Jaipur to Goa",
textDirection: TextDirection.ltr,
style: TextStyle(
decoration: TextDecoration.none,
fontFamily: 'Raleway',
fontSize: 20.0,
color: Colors.white,
fontWeight: FontWeight.w700,
),
),
),
],
),
],
),
),
);
}
}
output of this code on emulator

Answer 1

Row has crossAxisAlignment to center as default. But when you wrap it into a column,
it doesnot appear in center because it has default crossAxisAlignment as start, not center. You will have to manually add this line :
crossAxisAlignment: CrossAxisAlignment.center
Your code should be like this :
....
color: Colors.deepPurple,
child: Column(
crossAxisAlignment: CrossAxisAlignment.center
children: <Widget>[
Row(
children: <Widget>[....
Hope it helps! Happy coding:)

Answer 2

Try using axis alignments.
For Row,
mainAxisAlignment: MainAxisAlignment.center
For Column,
crossAxisAlignment: CrossAxisAlignment.center