Products Google Maps Platform iOS Maps SDK for iOS Documentation Reference GMSCALayer Class Reference GMSCALayer Class Reference Overview GMSCALayer is a superclass used by layers in the Google Maps SDK for iOS, such as GMSMapLayer and GMSPanoramaLayer. This is an implementation detail and it should not be instantiated directly. Inherited by GMSMapLayer, and GMSPanoramaLayer. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated December 19, 2018.