How to check surface tracking (ARCore Android)?

Question

Java

I need to track the moment when the smartphone finds the surface. I'm trying to do it like this:

arFragment.getArSceneView().getScene().addOnUpdateListener(frameTime ->
{
    Frame frame = arFragment.getArSceneView().getArFrame();

    if (!surfaceChecker)
    {
        if (frame.getCamera().getTrackingState() == TrackingState.PAUSED)
            // do something
        else if (frame.getCamera().getTrackingState() == TrackingState.TRACKING)
        {
            // do something else
            surfaceChecker = true;
        }
    }
});

Does not work. The code // do something runs right after the camera turns on. What could be the problem?