Hi, welcome to AndroidRide!
In this post, you’ll learn how to set the background color of a Container in Flutter. Let’s dive right in!
Contents
Flutter Container Background Color – Using color property
By default, Container comes with a color property. Not only property, Flutter also provides lots of default colors to make our UI better.
- Here, I have used Colors.blue. You can use any other colors.
- Check it out other colors provided by Colors class.
Container(
width: 200,
height: 80,
color: Colors.red,
child: const Center(
child: Text(
'color property',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
Container Background color with Hex Code
- If you want to use any of the color code you like. For example, you got #FA8072 on the web. Just remove # and replace it with 0xff
- so #FA8072 becomes 0xffFA8072
- Now pass it to Color class -> Color(0xffFA8072)
Container(
width: 200,
height: 80,
color: const Color(0xffFA8072),
child: const Center(
child: Text(
'Hex color code',
style: TextStyle(
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
),
),
Background Color With Opacity
Sometimes, you don’t need fully opaque color for your container, so you can use opacity with colors to reduce the opaqueness.
- By default, Colors class provides colors like White70, black54.
- The number after the color name is opacity.
- Here, white70 means white color with 70% opacity.
Container(
width: 200,
height: 80,
//color: Colors.red.withOpacity(0.5),
color: Colors.black54,
child: const Center(
child: Text(
'color with opacity',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
- Or you can use withOpacity() method with the value.
- Just like given below.
Container(
width: 200,
height: 80,
color: Colors.red.withOpacity(0.5),
child: const Center(
child: Text(
'color with opacity',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
Background Color Using BoxDecoration
Container’s decoration property can be used to set Background color. BoxDecoration also provides color property.
Container(
width: 200,
height: 80,
decoration: const BoxDecoration(
color: Colors.yellow,
),
child: const Center(
child: Text(
'decoration property',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
Container Background Color as Gradient
You can set gradient color as Container background. By using gradient, we can give our container a different look.
- So we can use BoxDecoration and it’s gradient property to make background color.
- Let’s give starting and ending color in an array as value of colors property.
Container(
width: 200,
height: 80,
decoration: const BoxDecoration(
gradient: LinearGradient(
colors: [
Color(0xFF0061ff),
Color(0xFF60efff),
],
),
),
child: const Center(
child: Text(
'Gradient color',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
Complete Source code
- Here, I included all containers told above with SizedBox.
- You can also use Padding widget or You can use Container margin property for extra free space.
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(
debugShowCheckedModeBanner: false,
title: 'Container Background Color Example',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: ContainerBackgroundColorEx(),
);
}
}
class ContainerBackgroundColorEx extends StatelessWidget {
@override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
appBar: AppBar(
title: Text('Container Background Color Example'),
),
body: Center(
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
width: 200,
height: 80,
color: Colors.red,
child: const Center(
child: Text(
'color property',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.01,
),
Container(
width: 200,
height: 80,
color: const Color(0xffFA8072),
child: const Center(
child: Text(
'Hex color code',
style: TextStyle(
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.01,
),
Container(
width: 200,
height: 80,
//color: Colors.red.withOpacity(0.5),
color: Colors.black54,
child: const Center(
child: Text(
'color with opacity',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.01,
),
Container(
width: 200,
height: 80,
decoration: const BoxDecoration(
color: Colors.yellow,
),
child: const Center(
child: Text(
'decoration property',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.01,
),
Container(
width: 200,
height: 80,
decoration: const BoxDecoration(
gradient: LinearGradient(
colors: [
Color(0xFF0061ff),
Color(0xFF60efff),
],
),
),
child: const Center(
child: Text(
'Gradient color',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.01,
),
],
),
),
),
),
);
}
}
okay, that’s all for now.
If you like this post, please share it with your family and friends.
Thanks.