Demonstrates how to use the flutter_unity_widget plugin with Unity3D ARKIT using the Unity Foundation Demo.
- Open the unityproject and build it: Menu -> Flutter -> Export Android
- Copy android/UnityExport/libs/unity-classes.jartoandroid/unity-classes/unity-classes.jarand overwrite the existing file. You only need to do this each time you use a different Unity version.
- flutter run
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Open the unityproject and build it: Menu -> Flutter -> Export iOSBe sure you use at least Unity version 2019.3 or up. 
- 
open ios/Runner.xcworkspace (workspace!, not the project) in Xcode and add the exported project in the workspace root (with a right click in the Navigator, not on an item -> Add Files to "Runner" -> add the UnityExport/Unity-Iphone.xcodeproj file 
- Select the Unity-iPhone/Data folder and change the Target Membership for Data folder to UnityFramework
- flutter run

