Flutter Column widget is used to display its widgets in a vertical array.

Syntax

                  Column(
                    children: const <Widget>[
                      //some widgets
                    ],
                  )

                  

1) Column should have children:

Constructor

                  Column(
                          {Key key,
                          MainAxisAlignment mainAxisAlignment: MainAxisAlignment.start,
                          MainAxisSize mainAxisSize: MainAxisSize.max,
                          CrossAxisAlignment crossAxisAlignment: CrossAxisAlignment.center,
                          TextDirection textDirection,
                          VerticalDirection verticalDirection: VerticalDirection.down,
                          TextBaseline textBaseline,
                          List<Widget> children: const <Widget>[]}
                    )
                    

different properties explained for main axis and cross axis alignment:

1. start: it will align children at the start of the axis direction.

2. center: It will align children at the center of the axis.

3. end: It will align children at the end of the axis.

4. spaceBetween: It will add space between children evenly.

5. spaceAround: It will add the space between the children evenly and half of that space before and after the first and last children widget.

6. spaceEvenly: It will add the space between the children evenly and before and after the first and last children widget.

Example

                
                import 'package:flutter/material.dart';
 
 void main() => runApp(const MyApp());
  
 /// main application widget.
 class MyApp extends StatelessWidget {
   const MyApp({Key? key}) : super(key: key);
  
   static const String _title = 'Flutter Tutorial';
  
   @override
   Widget build(BuildContext context) {
     return const MaterialApp(
       title: _title,
       home: MyStatefulWidget(),
     );
   }
 }
  
 /// stateful widget that the main application instantiates
 class MyStatefulWidget extends StatefulWidget {
   const MyStatefulWidget({Key? key}) : super(key: key);
  
   @override
   State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
 }
  
 /// private State class that goes with MyStatefulWidget
 class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text('Column Widget Tutorial'),
       ),
       body: Center(
           child: Column(
             children: const <Widget>[
               Text('Text 1', style: TextStyle(fontSize: 24.0),),
               Text('Text 2', style: TextStyle(fontSize: 24.0),),
               Icon(
                 Icons.beach_access,
                 color: Colors.pink,
                 size: 30.0,
               ),
               Icon(
                 Icons.audiotrack,
                 color: Colors.green,
                 size: 30.0,
               ),
             ],
           )
       ),
     );
   }
 }
                

column()