如何对 flutter 中的 stream 数据进行排序

Question

I want to show all chatroom based on lastmessagetime

How to implement my stream to have sorted chatroom.

how to sort following stream

FirebaseFirestore.instance
              .collection("chatrooms").orderBy("lastmessagetime",descending: false).where("participants.${widget.usermodel.uid}", isEqualTo: true).snapshots(),

Answer 1

Could you describe more detail about your problem?

your code,

FirebaseFirestore.instance
          .collection("chatrooms").orderBy("lastmessagetime",descending: false).where("participants.${widget.usermodel.uid}", isEqualTo: true).snapshots(),