快速从用户到用户Firebase发送推送通知

Question

I am creating an app using Swift and Firebase. When the user presses a button the app will upload some data to the real time database and send another user a Push Notification. Is possible by making the other user subscribe to the changes in the realtime database or will this not check for changes when the app is not in the foreground?

Should I upload the data then use Cloud Messaging to alert the user of the new data?

Thank you

Answer 1

You should use FCM for this use case. Having the app listen for changes to the database while in the background is not good for device battery, so you should have your application server listen to the database for changes then send appropriate FCM messages to let the client app know that there are changes.