在Android中使用metaio在openCV中进行3D对象渲染

I am developing an appication, wher I'm using opencv to detect shapes in a camera image and want to display 3D objects rendered by metaio on those shapes. How can this be achieved? I have tried custom rendering, but 'onNewCameraFrame' method is not being called. I am developing an appication, wher I'm using o