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Get the data from sub collection after filtering the field of collection using where clause and provide it to stream builder – Flutter

This is the code I tried Stream<QuerySnapshot> _usersStream = FirebaseFirestore.instance .collection("ChatRoom") .where("users", arrayContains: Constant.myname) .snapshots(); @override Widget ChatMessageList() { return StreamBuilder( // stream: chatMessageStream, stream: _usersStream, builder: (context, AsyncSnapshot<QuerySnapshot> snapshot) { if (snapshot.data == null) { return Center( child: CircularProgressIndicator(…

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