如何组合通知 Flutter FirebaseMessaging

Question

Hi I was wondering if there is a way in which I could use Firestore messaging and flutter to merge notifications such similar to how instagram does it. Where initially it will say a single person liked a post etc then if more like the post it will merge it by saying bob, garry and 42 others liked a post. I have an image below which I hope makes the objective more clear

Answer 1

Those are so-called collapsible messages . From the Firebase documentation:

A collapsible message is a message that may be replaced by a new message if it has yet to be delivered to the device.

A common use cases of collapsible messages are messages used to tell a mobile app to sync data from the server. An example would be a sports app that updates users with the latest score. Only the most recent message is relevant.

So in the example of Instagram messages, when somebody likes the same post, the server sends a new message that replaces the previous message, by specifying the same collapse_key .