I have a project that uses push notifications via a 3rd party service that uses GCM under the hood.
I have access to the device tokens, but I see no way to import those to the Firebase Cloud Messaging. I know that for iOS, there is a way to import APNs tokens, but I can't find a way to do that for Android.
Is there a way to send push notifications to GCM registered tokens or to import them to Firebase?
Thanks!
Agreeing with @TimCasteljins, the post is a bit unclear, specifically where you want to import the registration tokens to FCM.
However, if you are referring to use them in FCM, there is no need to import them. As what was also mentioned by Tim Casteljins in the comments, you may still send push notifications to those tokens using FCM. So long as you use the corresponding Sender ID and Server Key.
If you are planning to use FCM, why not just Migrate to FCM completely?