Undefined name 'Firestore'-CodePudding

someone help me for this issu i can't solve this issu plz anyone help me..why show this prolem undifined the firestore but package i add it

class _ProductPageState extends State<ProductPage> {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: StreamBuilder(
        stream: Firestore.instance.collection("Sari").snapshots(),
        builder: (_, snapshot) {
          if (snapshot.hasData) {
            return Center(child: Text('loading'));
          } else {
            return Container(
              height: 320,
              child: PageView.builder(
                  itemCount: 5,
                  itemBuilder: (_, position) {
                    return _buildPageItem(position);
                  }),
            );
          }
        },
      ),
    );
  }

its pubspec.yml

cupertino_icons: ^1.0.2 firebase_auth: ^3.3.6 firebase_core: ^1.12.0 cloud_firestore: ^3.1.7 flutter_screenutil: ^5.1.1 fluttertoast: ^8.0.8 carousel_slider: ^4.0.0 dots_indicator: ^2.0.0

CodePudding user response：

You should add below line;

import 'package:cloud_firestore/cloud_firestore.dart';

or just follow Firestore installation documentation: https://firebase.flutter.dev/docs/firestore/overview

CodePudding user response：

Try this,

Use FirebaseFirestore.instance instead of Firestore.

CodePudding user response：

You have used the wrong identifier to reference Firestore. Use FirebaseFirestore.instance instead of Firestore.instance.

Here is the documentation for this: https://firebase.flutter.dev/docs/firestore/usage