title: iOS and Google Firebase - How to do Notification Actions
body: <p><strong>My Goal:</strong>
  Using Google Firebase Messaging, set up iOS Notification Actions</p>
  
  <p><strong>Resources Referenced:</strong></p>
  
  <ul>
  <li><a href="https://nrj.io/simple-interactive-notifications-in-ios-8/" rel="noreferrer">Action Notification Tutorial</a></li>
  <li><a href="https://firebase.google.com/docs/cloud-messaging/server#http-request" rel="noreferrer">FCM - Message Format</a></li>
  <li><a href="https://firebase.google.com/docs/cloud-messaging/concept-options#messages-with-both-notification-and-data-payloads" rel="noreferrer">FCM - Message Format with Data</a></li>
  <li><a href="https://firebase.google.com/docs/cloud-messaging/ios/receive#handling_messages" rel="noreferrer">FCM - Handling Messages on iOS</a></li>
  <li><a href="https://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/TheNotificationPayload.html" rel="noreferrer">iOS - Remote Notification Payload</a></li>
  </ul>
  
  <p><strong>Question:</strong></p>
  
  <p>I've looked through the above resources, but I still can't figure out how to set the category key for iOS, enabling notification actions. How do I do this?</p>