Why is my flutter app saves twice on firestore while my device is offline?

Question

When my device is offline and tried to insert into firestore, it executes twice.

this my code in adding document to firestore.

Solution

Firestore doesn't support transactions neither await keyword for offline mode, just remove the runTransaction and await.

  Future<void> saveHouseHolder() async {
      CollectionReference reference = Firestore.instance
            .collection('municipality')
            .document(global.mundocid)
            .collection('Barangay')
            .document(global.brgydocid)
            .collection('HouseHolderList');
         reference.add({
          'Name': name,
          'Gender': gender,
          'Age': age,
          'Spouse': spouse,
          'FullAddress': fullAdd,
          // 'Location':new GeoPoint(latitude, longitude),
          'ContactNumber': contactNo,
          'Origin': origin,
          'Language': language
        });

      Navigator.of(context).push(MaterialPageRoute(builder: (context) => HouseHolder()));

        }

After your connection is restored, it will sync automatically.

Comments

[Kato]

See how to ask and creating an mcve.

[jerahmeel]

oh, now I know.. Thanks for this! it really helped me..