flutter firebase: Bad State

Question

I'm having trouble with my code. It's always returning Bad state: field does not exist within the DocumentSnapshotPlatform.

I don't know what I did wrong. It used to work but after sometime and then I started getting this error. I didn't change anything about it. I didn't touch it. All of a sudden started receiving this error. And it doesn't work anymore. Not at all.

final uid = FirebaseAuth.instance.currentUser!.uid;
  QueryDocumentSnapshot<Map<String, dynamic>>? selectedRide;

StreamBuilder(
          stream: FirebaseFirestore.instance
              .collectionGroup('Requests')
              .snapshots(),
          builder: (BuildContext context,
              AsyncSnapshot<QuerySnapshot<Map<String, dynamic>>> snapshot) {
            if (!snapshot.hasData) {
              return const Center(child: CircularProgressIndicator());
            }

            return ListView.builder(
                itemCount: snapshot.data!.docs.length,
                itemBuilder: (context, index) {
                  final request = snapshot.data!;
                  String currentID = request.docs[index].get('UID');
                  if (currentID == uid) {
                    return Card(
                      child: ListTile(
                        onTap: () {
                          setState(() {
                            selectedRide = snapshot.data!.docs[index];
                          });
                          Navigator.push(
                              context,
                              MaterialPageRoute(
                                  builder: (context) => MyRidesPageScreen(
                                      selectedRide: selectedRide)));
                        },
                        title: Row(
                          children: [
                            SizedBox(
                              width: screenWidth * 0.1,
                              child: Text(
                                request.docs[index].get('Departure date'),
                                style: const TextStyle(color: Colors.blue),
                              ),
                            ),
                            SizedBox(
                              width: screenWidth * 0.03,
                            ),
                            SizedBox(
                              width: screenWidth * 0.27,
                              child: Text(
                                request.docs[index].get('Departure city'),
                              ),
                            ),
                            SizedBox(
                              width: screenWidth * 0.02,
                              child: const Text(
                                '-',
                              ),
                            ),
                            SizedBox(
                              width: screenWidth * 0.03,
                            ),
                            SizedBox(
                              width: screenWidth * 0.27,
                              child: Text(
                                request.docs[index].get('Arrival city'),
                              ),
                            ),
                            SizedBox(
                              width: screenWidth * 0.1,
                              child: Text(
                                request.docs[index].get('Departure time'),
                                style: const TextStyle(color: Colors.blue),
                              ),
                            ),
                          ],
                        ),
                      ),
                    );
                  }
                  return const SizedBox();
                });
          }),

This is the screenshot. Any help?

Can you let us know which line is causing this issue? – krishnaacharyaa Mar 29 '23 at 13:59 — krishnaacharyaa, Mar 29 '23 at 13:59
No line shown. It only gives the error – Eben Oasis Mar 29 '23 at 14:09 — Eben Oasis, Mar 29 '23 at 14:09

krishnaacharyaa · Answer 1 · 2023-03-29T14:34:07.297

1

You are see only one condition !snapshot.hasData but not considering any other condition and trying to build the data using ListView.Builder, but you need to consider situation when the stream is in ConnectionState.waiting and the like

Change your Streambuilder structure to:

StreamBuilder(
        stream: ...,
        builder: (BuildContext context, AsyncSnapshot<QuerySnapshot<Map<String, dynamic>>> snapshot) {
          if (snapshot.hasData && snapshot.data?.isNotEmpty == true) {
            return ListView.builder(); // Your ListView Builder here
          }
          if (snapshot.connectionState == ConnectionState.waiting) {
            return const Center(child: CircularProgressIndicator());
          }
          return const Center(child: CircularProgressIndicator());
        },
      ).

edited Mar 29 '23 at 14:34

answered Mar 29 '23 at 13:58

krishnaacharyaa

14,953
4
49
88

Changed it but still doesn't work – Eben Oasis Mar 29 '23 at 14:09
@EbenOasis, please find my edited post – krishnaacharyaa Mar 29 '23 at 14:34
Still no. and also snapshot.data?.isNotEmpty throws an error. The problem is that the code I wrote used to work. Then later started working intermetently. But does not work at all. – Eben Oasis Mar 29 '23 at 14:49

flutter firebase: Bad State

1 Answers1

Linked