# Interface ARAnchorListener

public interface ARAnchorListener
Observes anchor changes, including platform-recognized images and faces. Register through `ARSession#addAnchorListener(ARAnchorListener)`; events are delivered on the EDT.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `anchorChanged(ARAnchorEvent event)`
  Invoked on the EDT when an anchor is added, refined or removed.

- ## Method Details

  - ### anchorChanged

    void anchorChanged(ARAnchorEvent event)

    Invoked on the EDT when an anchor is added, refined or removed.

    ###### Parameters

    - `event`: the change description