Flutter : How to color Sizedbox (without using container)

Question

1. Explanation

I want to change full color of 'SizedBox' to see the location and scope of 'SizedBox'. I wonder is there any way to change SizedBox's color without filling it with Container or Decoration box. If not, I want to know how to fill SizedBox with decoration box.

2. Code

Here is a code that I tried.

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

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

  
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home : Scaffold(
        appBar: AppBar(
          title : const Text('this is title'),
        ),
        body : const SizedBox(
          width : 200,
          child: DecoratedBox(
              decoration: BoxDecoration(
                color : Colors.red,
              ),
          ),
        ),
        bottomNavigationBar: (
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: const [
              Icon(Icons.favorite),
              Icon(Icons.home),
              Icon(Icons.settings)
            ],
          )
        ),
      ),
    );
  }
}

**3. Result **

Here is what I got from the code.

Md. Yeasin Sheikh · Accepted Answer · 2022-04-23 12:10:07Z

7

You can wrap your SizedBox with ColoredBox

ColoredBox(
  color: Colors.cyanAccent,
  child: SizedBox(
      width: 200,
      height: 100,),
),

answered Apr 23, 2022 at 12:10

Md. Yeasin Sheikh

64.8k7 gold badges50 silver badges86 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

MD MEHEDI HASAN · Accepted Answer · 2022-04-23 12:08:47Z

4

You can try ColoredBox widget

SizedBox(
  width : 200,
  height: 20,
  child: ColoredBox(color: Colors.amber),
),

answered Apr 23, 2022 at 12:08

MD MEHEDI HASAN

2,5002 gold badges24 silver badges36 bronze badges

1 Comment

Mohammad Bilal Akbar Jul 7 at 6:47

It doesn't work @md-mehedi-hasan.

Stefano Amorelli · Accepted Answer · 2022-04-23 12:12:23Z

2

If you'd like to decorate the SizedBox to see the location and scope of the Widget just for debugging purposes, we can enable the debugPaintSizeEnabled just by pressing p on the CLI upon launching the flutter run command.

Otherwise, using a Container with explicit size parameters it's mostly the same as using SizedBox, and it would allow you to use have a background color or border decoration.

Another option would be to use a ColoredBox as the child of the SizedBox, or vice versa.

answered Apr 23, 2022 at 12:12

Stefano Amorelli

4,8843 gold badges17 silver badges32 bronze badges

1 Comment

fastbooktech Over a year ago

Thanks for introducing the concept of 'debugPaintSizeEnabled'. Though this was not the solution of changing color of SizedBox, it really helped me to check the scope of the components of widgets. Also, other solutions you gave me was really helpful too. Thanks again for answering my question, and have a nice day!!

Robert Pietraru · Accepted Answer · 2022-04-23 12:11:33Z

0

I'm not sure why you'd use it but you could have the child of the SizedBox be a container with the color you want. The container will stretch to the sizes provided

SizedBox(
        height: 10,
        width: 30,
        child: Container(color: Colors.red), 
     ),

Also you could use the widget inspector provided by flutter:

https://docs.flutter.dev/development/tools/devtools/inspector#:~:text=The%20Flutter%20widget%20inspector%20is,%2C%20rows%2C%20and%20columns).

answered Apr 23, 2022 at 12:11

Robert Pietraru

792 silver badges6 bronze badges

Collectives™ on Stack Overflow

Flutter : How to color Sizedbox (without using container)

4 Answers 4

Comments

1 Comment

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

1 Comment

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related