Augmented reality app in the Flutter

The augmented reality app in Flutter is one of the best popular technologies which provides a mechanism to show a virtual object in a physical atmosphere.
So, in this tutorial, you will learn the below points.

AR core
AR Kit
AR core configuration for Android
AR kit configuration for iOS
Plugin installation
Making 3d object example
Conclusion

You may also explore our Flutter app development page.

AR Core

Augmented reality core platform provided by Google to create the argument reality app in Flutter.

And AR core provides the APIs for the Android argument reality app in Flutter.

So, as per Google AR documentation, ARCore is doing two things: tracking the position of the mobile device as it moves, and building its own understanding of the real world.

AR Kit

AR kit only works for iOS apps and this platform is provided by Apple.

And AR kit provides the APIs for the iOS argument reality app in Flutter

As per Apple AR kit documentation, ARKit combines device motion tracking, camera scene capture, advanced scene processing, and display conveniences to simplify the task of building an AR experience. You can create many kinds of AR experiences with these technologies using the front or rear camera of an iOS device.

AR core configuration for Android

To configure the AR core for Android follow the below points.

So, add the AR optional and AR required entries to the manifest file.

AR required->

An AR Required app cannot function without ARCore. It requires an ARCore supported device that has installed Google Play Services for AR.

Need to add the following entries in AndroidManifest.xml.

<uses-permission android:name="android.permission.CAMERA" />
<uses-sdk android:minSdkVersion="24" />
<uses-feature android:name="android.hardware.camera.ar" />
<application …>
    <meta-data android:name="com.google.ar.core" android:value="required" />
</application>

<uses-permission android:name="android.permission.CAMERA" />

<uses-sdk android:minSdkVersion="24" />

<uses-feature android:name="android.hardware.camera.ar" />

</application>

AR optional->

An AR Optional app uses ARCore to enhance existing functionality. It has optional AR features which are only activated on ARCore supported devices that have installed Google Play Services for AR.

<uses-permission android:name="android.permission.CAMERA" />
<uses-sdk android:minSdkVersion="14" />
<application>
    <meta-data android:name="com.google.ar.core" android:value="optional" />
</application>

<uses-permission android:name="android.permission.CAMERA" />

<uses-sdk android:minSdkVersion="14" />

</application>

Modify build.gradle->

So Add the below codes in the project level build gradle file.

allprojects {
    repositories {
        google()

allprojects {

repositories {

google()

Add the below codes in app level build gradle file.

dependencies {
  implementation 'com.google.ar:core:1.16.0'
}

dependencies {

implementation 'com.google.ar:core:1.16.0'

}

So Add the sceneform plugin in app level build gradle.

android {
    compileOptions {
        sourceCompatibility 1.8
        targetCompatibility 1.8 
}
dependencies {
    implementation 'com.google.ar.sceneform.ux:sceneform-ux:1.8.0'
    implementation 'com.google.ar.sceneform:core:1.8.0'
}

android {

compileOptions {

sourceCompatibility 1.8

targetCompatibility 1.8

}

dependencies {

implementation 'com.google.ar.sceneform.ux:sceneform-ux:1.8.0'

implementation 'com.google.ar.sceneform:core:1.8.0'

}

AR kit configuration in iOS

In case of any permission issues please use the below code in the pod file.

post_install do |installer|
    installer.pods_project.targets.each do |target|
      flutter_additional_ios_build_settings(target)
      target.build_configurations.each do |config|
        # Additional configuration options could already be set here

        # BEGINNING OF WHAT YOU SHOULD ADD
        config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
          '$(inherited)',

          ## dart: PermissionGroup.camera
          'PERMISSION_CAMERA=1',

          ## dart: PermissionGroup.photos
          'PERMISSION_PHOTOS=1',

          ## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
          'PERMISSION_LOCATION=1',

          ## dart: PermissionGroup.sensors
          'PERMISSION_SENSORS=1',

          ## dart: PermissionGroup.bluetooth
          'PERMISSION_BLUETOOTH=1',´

          # add additional permission groups if required
        ]
        # END OF WHAT YOU SHOULD ADD
      end
    end
  end

post_install do |installer|

installer.pods_project.targets.each do |target|

flutter_additional_ios_build_settings(target)

target.build_configurations.each do |config|

# Additional configuration options could already be set here

# BEGINNING OF WHAT YOU SHOULD ADD

config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [

'$(inherited)',

## dart: PermissionGroup.camera

'PERMISSION_CAMERA=1',

## dart: PermissionGroup.photos

'PERMISSION_PHOTOS=1',

## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]

'PERMISSION_LOCATION=1',

## dart: PermissionGroup.sensors

'PERMISSION_SENSORS=1',

## dart: PermissionGroup.bluetooth

'PERMISSION_BLUETOOTH=1',´

# add additional permission groups if required

]

# END OF WHAT YOU SHOULD ADD

end

Plugin installation

Please follow this blog for plugin installation.

Making 3D object example

In the below code, you have got separate iOS and Android code classes.
We are making the sphere object.

import 'dart:io';

import 'package:arcore_flutter_plugin/arcore_flutter_plugin.dart';
import 'package:flutter/material.dart';
import 'package:vector_math/vector_math_64.dart' as vector;

import 'iOS AR.dart';

void main() {

  if(Platform.isIOS){
     runApp(const MaterialApp(
      debugShowCheckedModeBanner: false,
        home: MyAppIos()));
  }else {
     runApp(const MaterialApp(
      debugShowCheckedModeBanner: false,
        home: MyAppAndroid()));
  }

}
//Android Part

class MyAppAndroid extends StatefulWidget {
  const MyAppAndroid({super.key});
  @override
  State<MyAppAndroid> createState() => _MyAppAndroidState();
}

class _MyAppAndroidState extends State<MyAppAndroid> {
  ArCoreController? arCoreController;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('AR in Flutter'),
        ),
        body: ArCoreView(
          onArCoreViewCreated: _onArCoreViewCreated,
        ),
    );
  }
  void _onArCoreViewCreated(ArCoreController controller) {
    arCoreController = controller;

    _addSphere(arCoreController!);

  }

  void _addSphere(ArCoreController controller) {
    final material = ArCoreMaterial(
      color: Colors.white,
    );
    final sphere = ArCoreSphere(
      materials: [material],
      radius: 0.5,
    );
    final node = ArCoreNode(
      shape: sphere,
      position: vector.Vector3(0, 0, -1.5),
    );
    controller.addArCoreNode(node);
  }


  @override
  void dispose() {
    arCoreController?.dispose();
    super.dispose();
  }
}


//iOS Part

class MyAppIos extends StatefulWidget {
  const MyAppIos({super.key});

  @override
  State<MyAppIos> createState() => _MyAppStateIOS();
}

class _MyAppStateIOS extends State<MyAppIos> {
  late ARKitController arkitController;

  @override
  void dispose() {
    arkitController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) => Scaffold(
      appBar: AppBar(title: const Text('AR in Flutter')),
      body: ARKitSceneView(onARKitViewCreated: onARKitViewCreated));

  void onARKitViewCreated(ARKitController arkitController) {
    this.arkitController = arkitController;
    final node = ARKitNode(
        geometry: ARKitSphere(radius: 0.1), position: Vector3(0, 0, -0.5));
    this.arkitController.add(node);
  }
}

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import 'dart:io';

import 'package:arcore_flutter_plugin/arcore_flutter_plugin.dart';

import 'package:flutter/material.dart';

import 'package:vector_math/vector_math_64.dart' as vector;

import 'iOS AR.dart';

void main() {

if(Platform.isIOS){

runApp(const MaterialApp(

debugShowCheckedModeBanner: false,

home: MyAppIos()));

}else {

runApp(const MaterialApp(

debugShowCheckedModeBanner: false,

home: MyAppAndroid()));

}

//Android Part

class MyAppAndroid extends StatefulWidget {

const MyAppAndroid({super.key});

@override

State<MyAppAndroid> createState() => _MyAppAndroidState();

}

class _MyAppAndroidState extends State<MyAppAndroid> {

ArCoreController? arCoreController;

@override

Widget build(BuildContext context) {

return Scaffold(

appBar: AppBar(

title: const Text('AR in Flutter'),

body: ArCoreView(

onArCoreViewCreated: _onArCoreViewCreated,

);

}

void _onArCoreViewCreated(ArCoreController controller) {

arCoreController = controller;

_addSphere(arCoreController!);

}

void _addSphere(ArCoreController controller) {

final material = ArCoreMaterial(

color: Colors.white,

);

final sphere = ArCoreSphere(

materials: [material],

radius: 0.5,

);

final node = ArCoreNode(

shape: sphere,

position: vector.Vector3(0, 0, -1.5),

);

controller.addArCoreNode(node);

}

@override

void dispose() {

arCoreController?.dispose();

super.dispose();

}

//iOS Part

class MyAppIos extends StatefulWidget {

const MyAppIos({super.key});

@override

State<MyAppIos> createState() => _MyAppStateIOS();

}

class _MyAppStateIOS extends State<MyAppIos> {

late ARKitController arkitController;

@override

void dispose() {

arkitController.dispose();

super.dispose();

}

@override

Widget build(BuildContext context) => Scaffold(

appBar: AppBar(title: const Text('AR in Flutter')),

body: ARKitSceneView(onARKitViewCreated: onARKitViewCreated));

void onARKitViewCreated(ARKitController arkitController) {

this.arkitController = arkitController;

final node = ARKitNode(

geometry: ARKitSphere(radius: 0.1), position: Vector3(0, 0, -0.5));

this.arkitController.add(node);

}

Output Screen Android

Output Screen iOS

Conclusion

In this tutorial, you have learned about how to create an augmented reality app in a flutter.

So pls follow the above step and if you have any issues or suggestions you can leave your message in the comment section we will try to solve this.

You can read more interesting blogs by Mobikul.

AR in flutter Augmented reality app in the Flutter

jitendra kumar 28 April 2023

. . .

Augmented reality app in the Flutter

AR Core

AR Kit

AR core configuration for Android

AR kit configuration in iOS

Plugin installation

Making 3D object example

Conclusion

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