How can we import Flutter App to Unity 3d

Question

I want to make a cross-platform app that uses 3d models and animation from unity but making good layout and widgets is very difficult in unity. So, can I make designs in Flutter and import that to unity?
It seems vice-versa is not possible as OpenGL bindings are not currently supported by flutter.

Solution

Yes you make designs in Flutter and import that to Unity3D. What you want is called embedding flutter in native app (Unity3D). To embed flutter check this article.

So, basically you will have to create a flutter application, convert it into a library, import that library in Unity3D project and call your activity.

To launch your own activity from Unity3D, check this question