Firebase Docs Reference FirebaseInAppMessaging Framework Reference Protocols The following protocols are available globally. FIRInAppMessagingDisplayDelegate A protocol defining those callbacks to be triggered by the message display component under appropriate conditions. FIRInAppMessagingDisplay The protocol that a FIAM display component must implement. 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 September 25, 2018.