AR in Flutter – An Expert Guide

 



What is AR?

Augmented reality (AR) is a technology that projects digital content, like images, videos, and music, into the actual environment using devices like smartphones, tablets, or AR glasses. Unlike Virtual Reality (VR), which creates an entirely virtual environment, Augmented Reality (AR) enhances the current environment with the addition of immersive and interactive elements.

Top Applications of AR

AR has transformed several sectors by providing creative solutions and improving user experiences. Some important applications of augmented reality include:

#1. Education: AR allows for interactive learning experiences such as virtual field trips and 3D visualization of complicated subjects.

#2. Healthcare: Augmented reality can help with medical training, anatomical visualization, and surgical operations.

#3. Retail: Augmented reality enhances shopping experiences with virtual try-ons and product demos.

#4. Gaming: AR games, such as Pokémon GO, have popularized the use of AR by combining digital gameplay aspects with the real environment.

#5. Navigation: AR overlays real-time directions and information onto the user's perspective of the road or environment.

Setting up Flutter for AR Development

Let’s setup your Flutter environment before starting AR work in Flutter. To begin, take these steps:

1. Install Flutter: Go to the official Flutter website, download, and install the Flutter SDK. Follow the guidelines provided by your operating system's installation (Windows, macOS, or Linux).

2. Launch an IDE: Install an IDE (Integrated Development Environment), such as Android Studio or Visual Studio Code. These two IDEs provide great Flutter support.

3. Set Up the Environment: Put Flutter in the PATH of your system and use flutter doctor in the terminal to make sure all required dependencies are set up and installed properly.

4. Start a New Project with Flutter: To start a new Flutter project, type flutter create your_project_name.

What Libraries will We use in Flutter AR Project?

We will use 3 plugins in our project: arkit_plugin, arcore_flutter_plugin and vector_math

1. arkit_plugin : Used for implementing AR in iOS

2. arcore_flutter_plugin : Used for implementing AR in android

3. vector_math : Vector math library for 2D and 3D applications in flutter.

Let’s start with coding part:

Create a new project by following command

flutter create ar_demo

Now let’s add our plugins:


And load these plugins by running:

flutter pub get

Platform specific setup for iOS:

Add camera permission on iOS


Also, the minimum supported iOS version on podfile should be 11 or greater.


Platform specific setup for android:

Go to AndroidManifest.xml file and add below meta-data tag inside application tag


Go to app level build.gradle file and add below dependencies


Flutter code:

Now, go to main.dart file inside lib folder and replace build method inside MyApp widget with below code:


 

As seen in code, we will use ARKitScrenView and ArCoreView for iOS and android respectively.

You need to add these 2 import statements for the same


Now, let’s declare ARKitController and ArCoreController for our state

 

Next, we will create methods onARKitViewCreated and onArCoreViewCreated


In these methods, we are adding a sphere of red color to our realtime camera.

Don’t forget to dispose our controllers

Now, run the project by clicking on play icon on your IDE or run below command

flutter run

It will take about 1-2 minutes to run the app and you will see below screen:    


Read More: Unfolding the Future of Foldable: Building Immersive Apps with Flutter


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