我想在黄色下方添加一个绿色框

Question

I wanted to add a green box below the yellow box. So please help me add that below. I got it mostly done. But don't know how to proceed with the rest. I am new to this and don't know what to do. I am just learning to code in Dart.

  runApp(
    Myapp()
  );

}

class Myapp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.teal,
        body: SafeArea(
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: <Widget>[
            Container(
          height: double.infinity,
          width: 100.0,
          color: Colors.red,
        ),
        Container(
          height: 100,
          width: 100.0,
          color: Colors.yellow,
        ),
          Container(
          height: double.infinity,
          width: 100.0,
          color: Colors.blue,
        ),
          ],
        ),
        ),
      ), 
      debugShowCheckedModeBanner: false,     
    );
  }
}```

Answer 1

To add a green box under the yellow box, wrap your yellow box with a Column widget and put your yellow box below it.

Check the code below: It works perfectly:

MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.teal,
        body: SafeArea(
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: <Widget>[
            Container(
          height: double.infinity,
          width: 100.0,
          color: Colors.red,
        ),
            // your column widget here
        Column(
          children: <Widget>[
            // your yellow box here
            Container(
              height: 100,
              width: 100.0,
              color: Colors.yellow,
            ),
            // your green box here
             Container(
              height: 100,
              width: 100.0,
              color: Colors.green,
            ),
          ],
        ),
          Container(
          height: double.infinity,
          width: 100.0,
          color: Colors.blue,
        ),
          ],
        ),
        ),
      ), 
      debugShowCheckedModeBanner: false,     
    );

I hope this helps.

Answer 2

I think this App Brewery's challenge, isn't it? Here's a hint, to add a green box below yellow, wrap the yellow box container with column widget and add it to the recently created column widget.

Answer 3

import 'package:flutter/material.dart';

void main() {
  runApp(Myapp());
}

class Myapp extends StatelessWidget {
  // const ({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.teal,
        body: SafeArea(
          child:Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: <Widget>[

              Container(
                height: double.infinity,
                width: 100.0,
                color: Colors.red,
              ),
              Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  // your yellow box here
                  Container(
                    height: 100,
                    width: 100.0,
                    color: Colors.yellow,
                  ),
                  // your green box here
                  Container(
                    height: 100,
                    width: 100.0,
                    color: Colors.green,
                  ),
                ],
              ),
              Container(
                height: double.infinity,
                width: 100.0,
                color: Colors.blue,
              ),
            ],

          ),
        ),
      ),
    );
  }
}