Updating the iOS badge in a background push notification

[mark-kraemer]

Assuming iOS notifications are in place, when a user reads a notification either in the app or from some other notification means, I would like to update badge for the iOS app. It's decently straight forward with Apnotic by just sending a push notification with no alert. Is there a way to do this with Noticed since it already handles the connection? If not, I can just utilize Apnotic directly.

    def update_badge(token)
      # Create a push notification for a specific device token
      background_notification = Apnotic::Notification.new(token)

      # without an alert attribute, this notification will be delivered in the background
      background_notification.badge = user.unread_notification_count
      background_notification.topic = APP_BUNDLE_IDENTIFIER

      # Send notification (this is a blocking call)
      connection.push(background_notification)
      # Close the connection
      connection.close
    end

[excid3]

You can do whatever you want with the notification: https://github.com/excid3/noticed/blob/main/lib/noticed/delivery_methods/ios.rb#L32-L47

[excid3]

I think that would probably work nicely. Let me know how it goes?

[mark-kraemer]

Will do, thanks for the suggestion!

[mark-kraemer]

@excid3 - Finally getting around to implementing this. I have the latest version (2.1.3) and I'm running into following error. Am I missing something?

<class:NativeBadgeNotifier>: undefined method notification_methods for NativeBadgeNotifier:Class (NoMethodError)

class NativeBadgeNotifier < Noticed::Ephemeral
  notification_methods do
  #   # Setting the alert text to nil will deliver the notification in
  #   # the background. This is used to update the app badge on the iOS home screen
    def ios_alert_text
      nil
    end
  end
end

[excid3]

Whoops, added it as an instance method instead of class method. Pushed that change to main.

[mark-kraemer]

Added some documentation on this pattern: #409.