getting this error showing in red screen i update my packages but again this error is showing
The following StateError was thrown building StreamBuilder<QuerySnapshot<Map<String, dynamic>>>(dirty, state: _StreamBuilderBaseState<QuerySnapshot<Map<String, dynamic>>, AsyncSnapshot<QuerySnapshot<Map<String, dynamic>>>>#eea86): Bad state: field does not exist within the DocumentSnapshotPlatform
The relevant error-causing widget was: StreamBuilder<QuerySnapshot<Map<String, dynamic>>> StreamBuilder:file:///C:/Users/flutt/Desktop/New folder/MarcJr-main/Logisyntax-MarcJr-master/lib/pages/Ecommerce/SellerDashboard/SoldItemScreen.dart:34:20
When the exception was thrown, this was the stack: #0 DocumentSnapshotPlatform.get._findKeyValueInMap (package:cloud_firestore_platform_interface/src/platform_interface/platform_interface_document_snapshot.dart:87:7) #1 DocumentSnapshotPlatform.get._findComponent (package:cloud_firestore_platform_interface/src/platform_interface/platform_interface_document_snapshot.dart:105:23) #2 DocumentSnapshotPlatform.get (package:cloud_firestore_platform_interface/src/platform_interface/platform_interface_document_snapshot.dart:121:12) #3 _JsonDocumentSnapshot.get (package:cloud_firestore/src/document_snapshot.dart:92:48) #4 _JsonDocumentSnapshot.[] (package:cloud_firestore/src/document_snapshot.dart:96:40) #5 _SoldItemScreensState.build.. (package:marcjrfoundation/pages/Ecommerce/SellerDashboard/SoldItemScreen.dart:63:39) #6 MappedListIterable.elementAt (dart:_internal/iterable.dart:413:31) #7 ListIterator.moveNext (dart:_internal/iterable.dart:342:26) #8 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:189:27) #9 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28) #10 new List.of (dart:core-patch/array_patch.dart:51:28) #11 ListIterable.toList (dart:_internal/iterable.dart:213:44) #12 _SoldItemScreensState.build. (package:marcjrfoundation/pages/Ecommerce/SellerDashboard/SoldItemScreen.dart:89:22) #13 StreamBuilder.build (package:flutter/src/widgets/async.dart:444:81) #14 _StreamBuilderBaseState.build (package:flutter/src/widgets/async.dart:124:48) #15 StatefulElement.build (package:flutter/src/widgets/framework.dart:4992:27) #16 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4878:15) #17 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5050:11) #18 Element.rebuild (package:flutter/src/widgets/framework.dart:4604:5) #19 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2667:19)
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'package:marcjrfoundation/services/SharedPreferences/sharedprefs_helper.dart';
import 'package:marcjrfoundation/services/device_size.dart';
import 'package:websafe_svg/websafe_svg.dart';
import '../ProductItem/sellerProductItem.dart';
class SoldItemScreens extends StatefulWidget {
static final String tag = '/soldItemScreen';
@override
_SoldItemScreensState createState() => _SoldItemScreensState();
}
class _SoldItemScreensState extends State<SoldItemScreens> {
@override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomInset: true,
appBar: AppBar(
title: Text(
'Sold Products',
style: TextStyle(
fontSize: ResponsiveWidget.isSmallScreen(context) ? 17.0 : 25.0),
),
),
body: Column(
children: [
SizedBox(
height: 10.0,
),
Container(
color: Color(0xffF7F7F7),
child: StreamBuilder(
stream: FirebaseFirestore.instance
.collection("items")
.where('seller', isEqualTo: parentIdGlobal)
.where('isSold', isEqualTo: true)
.snapshots(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
if (!snapshot.hasData)
return Center(
child: CircularProgressIndicator(),
);
List<DocumentSnapshot<Object>> docs = snapshot.data!.docs;
if (docs.length == 0) {
return Center(
child: Padding(
padding: const EdgeInsets.all(10.0),
child: WebsafeSvg.asset(
'assets/images/sold-out.svg',
fit: BoxFit.cover,
height: MediaQuery.of(context).size.height / 5,
),
),
);
}
return ListView(
scrollDirection: Axis.vertical,
shrinkWrap: true,
children: docs.map((DocumentSnapshot doc) {
bool isSold = doc['isSold'];
bool isLiked = doc['isLiked'];
String itemId = doc['itemId'];
String seller = doc['seller'];
String sellerName = doc['sellerName'];
String title = doc['title'];
String desc = doc['desc'];
String price = doc['price'];
String condition = doc['condition'];
String category = doc['category'];
String location = doc['location'];
String itemImage = doc['imageDownloadUrl'];
return SellerProductItem(
itemId: itemId,
seller: seller,
sellerName: sellerName,
title: title,
desc: desc,
price: price,
itemImage: itemImage,
isLiked: isLiked,
isSold: isSold,
category: category,
condition: condition,
location: location,
);
}).toList(),
);
},
),
),
],
),
);
}
}
CodePudding user response：
According to the current version(3.4.8) of the cloud_firestore,
There is a problem in below line of your code.
List<DocumentSnapshot<Object>> docs = snapshot.data!.docs;
Datatype that you have selected is not correct. snapshot.data?.docs is of type List<QueryDocumentSnapshot<Map<String, dynamic>>>?.
You can replace streamBuilder in your code with below code snippet.
StreamBuilder(
stream: FirebaseFirestore.instance
.collection("items")
.where('seller', isEqualTo: parentIdGlobal)
.where('isSold', isEqualTo: true)
.snapshots(),
builder: (context, snapshot) {
if (!snapshot.hasData) {
return CircularProgressIndicator();
}
final List<QueryDocumentSnapshot<Map<String, dynamic>>> docSnapList =
snapshot.data?.docs ?? [];
if (docSnapList.isEmpty) {
return Center(
child: Padding(
padding: const EdgeInsets.all(10.0),
child: WebsafeSvg.asset(
'assets/images/sold-out.svg',
fit: BoxFit.cover,
height: MediaQuery.of(context).size.height / 5,
),
),
);
}
final List<Map<String, dynamic>> docList = docSnapList.map((QueryDocumentSnapshot<Map<String, dynamic>> queryDocumentSnapshot) => queryDocumentSnapshot.data()).toList();
return ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
itemCount: docList.length,
itemBuilder: (context, index) {
bool isSold = docList[index]['isSold'];
bool isLiked = docList[index]['isLiked'];
String itemId = docList[index]['itemId'];
String seller = docList[index]['seller'];
String sellerName = docList[index]['sellerName'];
String title = docList[index]['title'];
String desc = docList[index]['desc'];
String price = docList[index]['price'];
String condition = docList[index]['condition'];
String category = docList[index]['category'];
String location = docList[index]['location'];
String itemImage = docList[index]['imageDownloadUrl'];
return SellerProductItem(
itemId: itemId,
seller: seller,
sellerName: sellerName,
title: title,
desc: desc,
price: price,
itemImage: itemImage,
isLiked: isLiked,
isSold: isSold,
category: category,
condition: condition,
location: location,
);
},
);
},
);