Flutter + SVG

Introduction

Flutter is a popular open-source framework for developing mobile applications. SVG (Scalable Vector Graphics) is an XML-based vector image format that can be used to create complex and scalable graphics.

Flutter now provides support for rendering SVG images, which makes it easier to work with vector graphics in Flutter.

In this guide, we will explore how to use SVG images in Flutter applications.

Getting Started

To use SVG images in your Flutter application, you need to add the flutter_svg package to your project. You can add it to your pubspec.yaml file like this:

dependencies:
  flutter_svg: ^0.22.0

Using SVG Images in Flutter

To load and display an SVG image in a Flutter application, you can use the SvgPicture.asset or SvgPicture.network constructor.

Load SVG Image from Asset

To display an SVG image from an asset, you can use the SvgPicture.asset constructor. Here's an example:

import 'package:flutter_svg/flutter_svg.dart';

...

SvgPicture.asset(
  'assets/images/my_image.svg',
  width: 200,
  height: 200,
),

In the example above, we're loading an SVG image from the assets/images directory and displaying it with a width and height of 200.

Load SVG Image from Network

To display an SVG image from a URL, you can use the SvgPicture.network constructor. Here's an example:

import 'package:flutter_svg/flutter_svg.dart';

...

SvgPicture.network(
  'https://example.com/my_image.svg',
  width: 200,
  height: 200,
),

In the example above, we're loading an SVG image from a URL and displaying it with a width and height of 200.

Advanced Usage

Customizing SVG Colors

To customize the colors of an SVG image, you can use the color property. Here's an example:

import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';

...

SvgPicture.asset(
  'assets/images/my_image.svg',
  color: Colors.red,
),

In the example above, we're loading an SVG image from an asset and setting the color to red.

Customizing SVG Size

To customize the size of an SVG image, you can use the width and height properties. Here's an example:

import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';

...

SvgPicture.asset(
  'assets/images/my_image.svg',
  width: 300,
  height: 300,
),

In the example above, we're loading an SVG image from an asset and setting the width and height to 300.

Conclusion

In this guide, we've explored how to use SVG images in Flutter applications. We've seen how to load SVG images from assets and network, and how to customize the colors and size of SVG images.

With the flutter_svg package, working with SVG images in Flutter is now easier than ever.