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Can we rewrite this?

I have a query for retrieving data from a Firestore collection, and values from that query are used to define the stream to be built by StreamBuilder. What I have found is that StreamBuilder builds the stream before the Firestore…

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Error Null check operator used on a null value Flutter

I get this error in the StreamBuilder: Here's the code: import 'dart:async'; import 'package:firebase_database/firebase_database.dart'; import 'package:flutter/material.dart'; class NewCauseMenu extends StatefulWidget { String? area; NewCauseMenu(this.area, {super.key}); @override State<NewCauseMenu> createState() => _NewCauseMenuState(); } class _NewCauseMenuState extends State<NewCauseMenu> { final db = FirebaseDatabase.instance;…

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convert this into streambuilder in flutter

I want to convert this function into Streambuilder, but somehow I could not figure out how I could do it. Any help would be greatly appreciated. Future getReceiverChats() async { var data = await FirebaseFirestore.instance .collection("message") .doc(widget.id) .collection("nodes") .orderBy("time", descending:…

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