Invoking scene when loading Unity as subview in Android

Question

I have integrated Unity in an Android activity (similar to this ). I now need to dynamically load a scene depending on user input.

I've tried replicating how Unity loads a scene , in the only way that I know an Android Activity is able to communicate with the UnityPlayer, but obviously doesn't work:

UnityPlayer.UnitySendMessage("Application", "LoadLevel", "9");

I know there are other ways of loading a scene in Unity, but I don't know how to call those from Android itself (also consider that UnitySendMessage only allows one parameter).

Answer 1

If you plan to load Unity activity from Android, you should create an empty scene. Call this this Main Menu , then make it the default scene that loads through the Build Settings . Make it index 0.

The goal of this empty scene is to load specific scene when script attached to it is called.

In this Main Menu scene, create a GameObject called SceneLoader then attach the script below to it:

public class SceneLoader : MonoBehaviour
{
    public void loadScene(string sceneIndex)
    {
        UnityEngine.SceneManagement.SceneManager.LoadScene(Convert.ToInt16(sceneIndex));
    }
}

You should also create a GameObject called SceneLoader in every other scene and attach the script above to all of them.

Now, load Unity Activity which automatically loads the default/empty scene. Since there is only one GameObject/ SceneLoader in it, it will load very fast.

You can now load other scenes from Java with:

UnityPlayer.UnitySendMessage("SceneLoader", "loadScene", "9");