Using Flutter with ARCore: Augmented Reality for Android

Achin Verma
Written by

Achin Verma

Achin Verma

Achin Verma

Team Lead Mobile

Achin Verma is a Senior Flutter/Android Developer at Your Team in India, bringing over 9 years of experience in mobile app development.. Skilled in native Android (Java, Android Studio) and Flutter, Achin plays a pivotal role in project leadership and mentoring development teams. They are dedicated to writing clean, efficient code while ensuring the seamless execution of projects from inception to delivery.

Quick Summary: Dive into the exciting world of augmented reality (AR) on Android with Flutter and ARCore. Explore how to integrate ARCore features into your Flutter apps, enabling immersive AR experiences that push the boundaries of mobile app development.
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Introduction

  • Brief explanation of Augmented Reality (AR) and its applications.
  • Overview of ARCore as Google's platform for building AR experiences on Android.
  • How Flutter can leverage ARCore to create immersive AR applications for Android.

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Setting Up ARCore in Flutter

Introduction to ARCore

  • Overview of ARCore features for Android devices.
  • Explanation of ARCore's capabilities, including motion tracking and environmental understanding.
  • Code snippets showcasing the inclusion of ARCore dependencies in a Flutter project.

 

# pubspec.yaml
dependencies:
  arcore_flutter_plugin: ^latest_version

 

// Importing ARCore in a Flutter widget
import 'package:arcore_flutter_plugin/arcore_flutter_plugin.dart';


Initializing ARCore Session

  • Steps to initialize an ARCore session in a Flutter app.
  • Code examples demonstrating the creation of an AR session.

// Initializing ARCore session
ArCoreController arCoreController;

@override
Widget build(BuildContext context) {
  return ArCoreView(
    onArCoreViewCreated: _onArCoreViewCreated,
  );
}

void _onArCoreViewCreated(arCoreController) {
  this.arCoreController = arCoreController;
  // Initialize AR session
}


Creating AR Experiences with Flutter

  • Placing 3D Objects in AR
  • Introduction to placing 3D objects in the AR environment.
  • Code snippets demonstrating the creation and placement of 3D objects.

 

// Placing a 3D object in AR
final earthNode = ArCoreReferenceNode(
  name: 'Earth',
  object3DFileName: 'earth.sfb',
  position: Vector3(0, -1, -3),
  rotation: Vector4(0, 0, 0, 0),
);

arCoreController.addArCoreNodeWithAnchor(earthNode)


Implementing AR Interactions

  • Strategies for implementing user interactions in AR.
  • Code examples showcasing gesture-based interactions in an AR environment.

 

// Handling tap gesture in AR
GestureDetector(
  onTap: () {
    // Handle tap in AR
  },
  child: ArCoreView(
    onArCoreViewCreated: _onArCoreViewCreated,
  ),
)

 

// Handling tap gesture in AR
GestureDetector  onTap: () {
    // Handle tap in AR
  },
  child: ArCoreView(
    onArCoreViewCreated: _onArCoreViewCreated,
  ),
)

 

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ARCore and Flutter Integration Best Practices

  • Optimizing Performance for AR
  • Importance of optimizing performance for smooth AR experiences.
  • Strategies for optimizing rendering and minimizing latency.
  • Code snippets illustrating performance optimization techniques.

 

// AR performance optimization considerations
ArCoreView(
  enableUpdateListener: false,
  enableTapRecognizer: false,
)

 

Handling ARCore Lifecycle Events

  • Overview of ARCore lifecycle events and their significance.
  • Code examples demonstrating the handling of ARCore lifecycle events in Flutter.

// Handling ARCore lifecycle events
ArCoreView(
  onArCoreViewCreated: _onArCoreViewCreated,
  enableUpdateListener: true,
)

Testing ARCore Apps in Flutter

  • Emulator and Simulator Testing
  • Limitations and considerations for testing AR apps on emulators and simulators.
  • Code snippets demonstrating testing configurations.

flutter run --device=your_emulator_or_simulator

 

Real-Device Testing

  • Importance of testing AR apps on real Android devices.
  • Code examples showcasing testing on physical Android devices.

flutter run --device=device_id

Conclusion

  • Recap of the capabilities of Flutter and ARCore for building AR experiences on Android.
  • Encouragement for developers to explore the possibilities of AR in Flutter.
  • Reminders about the importance of testing AR applications on actual devices.

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