[Question]: How to get FCM token from OneSignal to send notifications via Firebase?

[namdh03]

How can we help?

Hi, I have a question about integrating Firebase Cloud Messaging (FCM) and OneSignal.

Currently, I’m using the library @react-native-firebase/messaging to get an FCM token like this:

try {
  await messaging().registerDeviceForRemoteMessages();
  const token = await messaging().getToken();
  console.log('FCM Token:', token);
} catch (error) {
  console.log('Error getting FCM token:', error);
}

This gives me a token in the format like:

fXZO54XETHei-rgFRInOf8:APA91bG2b9mAlQpqBkl2Qv5wUyJsf6EGOaok8xMT8YMm30USOtocIUlvo4uE-lWFD9XbNOfmQeOR2-0OCku6Wa-vdp0q8MkgxNt6DQyMWra-kzOHhnRb658

My question is:

👉 How can I get a similar FCM token from OneSignal so that I can use Firebase to send notifications directly with that token?
In other words, can OneSignal provide me an FCM token like the one above?

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[PhillipFraThailand]

I'm also interested in what this might look like. We're a platform with ~20mil users that's considering moving away from RNfirebase on the frontend, as the package has started having some issues with Expo. We would like to keep the Firebase implementation in the backend if possible

[nan-li]

Hi @namdh03 and @PhillipFraThailand, if you asking about the push token, it can be accessed via OneSignal.User.pushSubscription.getTokenAsync(). See documentation on this method.