Remove FCM notification

Question

I use FCM in my client-server application, and I need to remove the sent notification from the device if it is no longer relevant, for example, if a person has read it already, it needs to be done from the server, I can do it, I tried to use tag but I don't find such information, other applications can do it(((, another problem is to delete notifications on the device when a person opened the letter but the notification remains, the module has a void RemoveNotification (int id), but what is a notification id, where can I get it int and this cannot be a tag or collapse key, I tried to transfer notification, but unsuccessfully pls help me solve the problem

Answer 1

As FCM tutorial for Android notification, I think you must send another FCM message to your device, with instruction of which notifications to removed. Then handle remove of them in your FirebaseMessagingService which was kept ids of notifications shown somewhere or query on currently visible notifications.