fcm | Ruby bindings to Firebase Cloud Messaging | Notification library

I want to localize notification , and i find that there is properties for that , like title_loc_key, body_loc_key

he FCM fields used for localizing (I18N) the notification title and body are not working. For example:

Currently I am Configuring FCM for my Flutter application, everything is working fine on android side, however in order to configure FCM in iOS I need an Apple developer account membership which I currently don't have access to.

when building the iOS app it gives the following Error

No profiles for 'app Bundle Id' were found: Xcode couldn't find any iOS App Development provisioning profiles matching 'app Bundle Id'.

Is it possible to build the flutter application on iOS to continue to make other features without configuring the FCM ?

We are running 2 separate Google Cloud Projects, Project A and Project B.

Project A is currently running an App Engine (AE) based API.

The API on project A needs to access the Firebase features on project B.

✅ I have setup cross projects access between the two projects using IAM and most functions are working fine.

App Engine on project A is able to access the Firebase real time db (RTDB) and Firebase Auth functions on Project B.

But we are unable to connect to Firebase Cloud Messaging on Project B

As far as I can see tracing through the Firebase admin SDK calls, we are able to obtain access tokens, and they're all valid as we can use some of the services (i.e. RTDB, Auth)

However, when we try using Firebase Cloud messaging we receive the following error: An error occurred when trying to authenticate to the FCM servers. Make sure the credential used to authenticate this SDK has the proper permissions.

Which seems to originate from a 401 unauthorized response to this service https://iid.googleapis.com/iid/v1:batchAdd

It doesn't seem to matter what amount of Roles on Project B I throw at the Project A service account.

If I use a separate Firebase service account that originated from Project B and use that json file as a credential then the issue go away, but I don't want to distribute credential files around, and everything else work fine without, except FCM.

FWIW this is how i initialise the firebase admin sdk

i have a problem. I cannot use OneSignal. I don't know why. I googled the error but nothing helped.

Currently i use Android Studio on Version: 4.2 The newest OneSignal Version: 4.3.4 And also the newest Firebase Version. I created a new Firebase Project and OneSignal Project.

This is the Error:

I am trying to use latest FCM using firebase_messaging: ^10.0.1 in my pubspec.yaml

from the documentation in here , I have to create a Application file in the Android project folder. from that documentation, the code is still in Java, I copy and paste that java code so the Android Studio will convert it automatically to Kotlin , the result is like this

in my Application.kt

I want to build a notification system in my Android app where I can send a notification to someone upon an event. For example, my app is about a social system where it uses Firestore database (Firebase) to save its users (which means I have a 'users' collection in there), and I have an 'Add as Friend' feature.

Everything works just fine, but I would like to add a feature where when user1 adds user2 as a friend, I would like to send user2 a notification about that.
I have searched in google and saw this post: https://www.geeksforgeeks.org/how-to-push-notification-in-android-using-firebase-cloud-messaging/

Now, from what I understand, this wouldn't help me much cause it only sends the notification from FCM by me (and not to a specific user).
The problem is, I don't really know what to search for (or what to type in google) in order to find what I'm looking for.

Some ideas I thought:

• to make a collection in firestore called 'Notifications' where it holds usernames as documentIDs
• when user1 sends a friend request to user2, I would add data (like title/message) to 'Notifications/user2/'

But I'm kind of stuck here, I would like to know ideas or if you guys have threads on how do I implement this, I really don't know what should I look for.

Thank you very much and sorry for the long post.

I am new to react native and I am stuck to send push notification from client side. i have FCM token of every user but need to send a notification to specific user. if you want more clarity please comment and let me know the solution of this

My apps needs a VOIP call functionality and I use webRTC to achieve it. In webRTC how the reciever knows about the incoming call?

All my users will register in Django and flutter as a frontend. If I use FCM how can specify the exact user to send notifcation. Some articles suggest to use UID, email and such things if I have been authenticated with the firebase I might know about the UID but I use my own server How to make this possible?

In case if we use email to send a notification i.e., will firebase send the notification to the particular user?

My app needs a functionality of internet call so I planned to use webRTC and using firebase as signalling server.

In this feature caller is interested in calling the callee. But in webRTC the user needs to use the code to answer the call by send sdp and ice candidate.

But the problem for me is how to notify the user about the incoming offer call. Can I use FCM for notifying the user?

What are the other ways of notifying the user?