Building Unique Mobile Apps with Flutter and Unity Framework

How to Use Flutter and Unity Framework to Create High-Performance Apps with 3D Elements

Are you looking for a way to create mobile apps that stand out from the crowd? Look no further than the combination of Flutter and Unity Framework. By using these two powerful technologies together, developers can create high-performance apps with 3D elements that are sure to impress.

In this blog post, we will walk you through a step-by-step example of how to use Flutter with Unity Framework to create a unique mobile app experience. We will provide you with live examples and source code to help you get started.

Getting Started with Flutter and Unity Framework

Before we dive into the example, let’s first take a quick look at what Flutter and Unity Framework are.

Flutter is a popular mobile app development framework that allows developers to create high-performance, cross-platform apps using a single codebase. Flutter uses the Dart programming language and provides a rich set of pre-built widgets that make it easy to create beautiful user interfaces.

Unity Framework, on the other hand, is a powerful game development engine that is widely used for creating 3D games and virtual experiences. Unity Framework provides developers with an extensive set of tools and features for creating immersive and interactive experiences.

By combining the power of Flutter and Unity Framework, developers can create mobile apps that feature 3D elements, animations, and other immersive experiences.

Creating a Flutter App with Unity Framework

Now let’s get started with the example. In this example, we will create a simple Flutter app that will display a 3D object using Unity Framework.

Step 1: Create a New Flutter Project

The first step is to create a new Flutter project. To do this, open up your terminal and run the following command:

flutter create unity_flutter_example

Step 2: Add the Unity Framework to Your Flutter Project

Next, we need to add the Unity Framework to our Flutter project. To do this, we will use the flutter_unity_widget package, which is available on pub.dev. We can add this package to our project by adding the following line to the pubspec.yaml file:

dependencies:
flutter_unity_widget: ^1.0.0

After adding the package, we need to import it in our main.dart file and create a new instance of the UnityWidget class.

import 'package:flutter_unity_widget/flutter_unity_widget.dart';

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: UnityWidget(),
),
);
}
}

Now, we can run the app and see the Unity logo displayed on the screen. However, we still need to add a 3D object to the scene. For this example, we will use a simple cube that we will create using the Unity Editor.

  1. Open the Unity Editor and create a new 3D project.
  2. In the hierarchy panel, right-click and select 3D Object > Cube to create a new cube object.
  3. Save the scene and the project.

Now, we need to export the Unity project as a .unitypackage file and import it into our Flutter project. To export the project, follow these steps:

  1. Select Assets > Export Package... from the menu bar.
  2. Select the cube object from the list of assets and click Export....
  3. Save the package file to a folder in your Flutter project directory.

Next, we need to import the .unitypackage file into our Flutter project. To do this, we will create a new folder called unity_assets in the root directory of our Flutter project and copy the .unitypackage file into this folder.

Finally, we need to tell the UnityWidget where to find the Unity scene and assets. We can do this by adding the following lines to our main.dart file:

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: UnityWidget(
onUnityCreated: onUnityCreated,
onUnityMessage: onUnityMessage,
),
),
);
}

void onUnityCreated(controller) {
controller.postMessage(
'Cube',
'LoadScene',
{'sceneName': 'Assets/unity_assets/CubeScene.unity'}
);
}

void onUnityMessage(controller, message) {
// Handle Unity messages here
}
}

In the onUnityCreated method, we are telling the Unity controller to load the scene called CubeScene.unity from the unity_assets folder. We can now run the app and see the cube object displayed on the screen.

This is just a simple example of how to use Flutter with Unity Framework. By combining the power of these two technologies, developers can create unique mobile app experiences