How to export sketchup all infos in a json file



I want to use unity3d to develop a app,when i export the model from sketchup ,iI found that the layer information was not exported,and now i want to export the model’s infos in a json file,but how? Who did it,please help me


What export format did you use ?

Were the layers that failed to export empty of all entities ?

I do not know of any JSON exporter.

But there is a special exporter for game engines:
(Amazon Lumberyard, Crytek CryENGINE 3, Epic Games Unreal 4, and Unity.)