> ## Documentation Index
> Fetch the complete documentation index at: https://moengage-sdk-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Actionable Notifications

Actionable notifications let you add custom action buttons to the standard iOS push notifications. It also gives the user a quick and easy way to perform relevant tasks in response to a notification.

# How to implement Actionable Notifications?

## Define a category

To use actionable notifications with MoEngage SDK, you have to define the actions, group them into categories, as shown in the example, and pass them as a parameter while registering for push notifications.

<CodeGroup>
  ```swift Swift wrap theme={"theme":{"light":"github-light","dark":"github-dark"}}
  @UIApplicationMain
  class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate{

      var window: UIWindow?
      

      func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

          //--- Rest of Implementation
        
          //For registering for remote notification
          let categories = self.getCategories()
          MoEngageSDKMessaging.sharedInstance.registerForRemoteNotification(withCategories: categories, andUserNotificationCenterDelegate:self)
          
          //--- Rest of Implementation
          
          return true
      }
      
      //Example to define categories
      //This method gives categories
      func getCategories() -> Set<UNNotificationCategory>{
          
          let acceptAction = UNNotificationAction.init(identifier: "ACCEPT_IDENTIFIER", title: "Accept", options: .authenticationRequired)
          let declineAction = UNNotificationAction.init(identifier: "DECLINE_IDENTIFIER", title: "Decline", options: .destructive)
          let maybeAction = UNNotificationAction.init(identifier: "MAYBE_IDENTIFIER", title: "May Be", options: .foreground)
          
          let inviteCategory = UNNotificationCategory.init(identifier: "INVITE_CATEGORY", actions: [acceptAction,declineAction,maybeAction], intentIdentifiers: [], options: .customDismissAction)
          let categoriesSet = Set.init([inviteCategory])
          
          return categoriesSet;
      }
  }
  ```

  ```objective-c Objective C wrap theme={"theme":{"light":"github-light","dark":"github-dark"}}
  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOption
  {
   ---------
      
      NSSet* categories = [self getNotificationCategories];
    	[[MoEngageSDKMessaging sharedInstance] registerForRemoteNotificationWithCategories:categories andUserNotificationCenterDelegate:self];
      }
    
   ---------
      return YES;
  }

  //Example to define categories
  //This method gives categories 
  -(NSSet*)getNotificationCategories{

      UNNotificationAction *acceptAction = [UNNotificationAction actionWithIdentifier:@"ACCEPT_IDENTIFIER" title:@"Accept" options:UNNotificationActionOptionAuthenticationRequired];
      UNNotificationAction *declineAction = [UNNotificationAction actionWithIdentifier:@"DECLINE_IDENTIFIER" title:@"Decline" options:(UNNotificationActionOptionDestructive)];
      UNNotificationAction *maybeAction = [UNNotificationAction actionWithIdentifier:@"MAYBE_IDENTIFIER" title:@"May Be" options:UNNotificationActionOptionNone];
      
      UNNotificationCategory* inviteCategory = [UNNotificationCategory categoryWithIdentifier:@"INVITE_CATEGORY"actions:@[acceptAction,maybeAction, declineAction,opt4Action] intentIdentifiers:@[] options:UNNotificationCategoryOptionNone];
      
      NSSet *categories = [NSSet setWithObjects:inviteCategory,nil];
      
      return categories;
  }
  ```
</CodeGroup>

<Info>
  **Notification Categories**

  MoEngage recommended not to change the actions grouped in a category across the app versions, as it will lead to users seeing different actions for the same category across different app versions.
</Info>