I tried fetching the data without using the StreamBuilder and all the data was fetched successfully but when I used the StreamBuilder it didn't work

StreamBuilder(
          stream: Firestore.instance.collection('chats/IClRN96vdYSpdtfT4PZh/messeges').snapshots(),
          builder: (ctx , snap) {
            if(snap.connectionState == ConnectionState.waiting){
              return Center(child: CircularProgressIndicator(),);
            }
            return ListView.builder(
              itemCount: snap.data.documents.length,
              itemBuilder: (ctx, i) => Container(
            padding: EdgeInsets.all(10),
            child: Text('Text Chat messeges'),
          ));
          })

CodePudding user response：

replace snap.data.documents.length with snap.data.docs.length

CodePudding user response：

add AsyncSnapshot<QuerySnapshot> to snap

 StreamBuilder(
          stream: Firestore.instance.collection('chats/IClRN96vdYSpdtfT4PZh/messeges').snapshots(),
          builder: (ctx , AsyncSnapshot<QuerySnapshot> snap) {
            if(snap.connectionState == ConnectionState.waiting){
              return Center(child: CircularProgressIndicator(),);
            }
            return ListView.builder(
              itemCount: snap.data!.documents.length,
              itemBuilder: (ctx, i) => Container(
            padding: EdgeInsets.all(10),
            child: Text('Text Chat messeges'),
          ));
          })

**And before the documents put ! **