Question 76584 in Flutter Question posted in
The official Flutter documentation can be found here.

type 'String' is not a subtype of type 'Movie' – Flutter

type ‘String’ is not a subtype of type ‘Movie’
please someone help me solve this problem thaks

I am getting error when trying to run in flutter (type ‘String’ is not a subtype of type ‘int’ of ‘index’)

error line number 96

import 'dart:math';
import 'package:firebase_database/firebase_database.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'package:realstate/home%20page/addingpage.dart';
import 'package:realstate/home%20page/inkwall.dart';
import 'package:sqflite/sqflite.dart';

import '../account page/account page.dart';
import '../my stats.dart';
import '../notifcatoin.dart';

class Home extends StatefulWidget {
  const Home({Key? key}) : super(key: key);

  @override
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home> {
  CollectionReference Detabase =
      FirebaseFirestore.instance.collection('Detabase');
  final Stream<QuerySnapshot> _usersStream =
      FirebaseFirestore.instance.collection('Detabase').snapshots();
  Stream<QuerySnapshot> getData() {
    return Detabase.snapshots();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.white,
        appBar: AppBar(
          centerTitle: true,
          title: const Text(
            "Home",
            style: TextStyle(
                color: Colors.black,
                fontFamily: 'Montserrat',
                fontWeight: FontWeight.bold,
                fontSize: 32),
          ),
          leading: IconButton(
            icon: Icon(
              Icons.add_business_sharp,
              color: Colors.black,
              size: 26,
            ),
            onPressed: () {
              Navigator.of(context)
                  .push(MaterialPageRoute(builder: (context) => Addingpage()));
            },
          ),
          backgroundColor: Colors.white,
          actions: [
            IconButton(
              onPressed: () {
                Navigator.of(context).push(
                    MaterialPageRoute(builder: (context) => AccountPage()));
              },
              icon: const Icon(
                Icons.account_circle,
              ),
              color: Colors.black,
              highlightColor: Colors.transparent,
              focusColor: Colors.transparent,
              hoverColor: Colors.transparent,
              splashColor: Colors.transparent,
            )
          ],
        ),
        body: Container(
          padding: EdgeInsets.all(30),
          child: StreamBuilder<QuerySnapshot>(
            stream: _usersStream,
            builder:
                (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
              if (snapshot.hasError) {
                return Text('Something went wrong');
              }

              if (snapshot.connectionState == ConnectionState.waiting) {
                return Text("Loading");
              }

              return ListView(
                children: snapshot.data!.docs.map(
                  (DocumentSnapshot document) {
                    Map<String, dynamic>? data =
                        document.data() as Map<String, dynamic>;

                    return MovieItem(data[Index] ?? "");
                  },
                ).toList(),
              );
            },
          ),
        ),
      ),
    );
  }
}

plEASE someone solve this problem it toke me 2 weeks

I am getting error when trying to run in flutter (type ‘String’ is not a subtype of type ‘int’ of ‘index’)

Tags:

3

Answers


  1. 0

    you provided 2 diffrent errors

    so yea and the coode looks diffrent at the snippet

    Ok so at

    return MovieItem(data[Index] ?? "");

    you are returning data[index] but if it is null you are returning ""

    so MovieItem("")

    you should do it

    return MovieItem(data[Index] ?? null);
    Login or Signup to reply.
  2. 0

    And what do you get in snapshot.data from Firebase? Can you display that data?

    Login or Signup to reply.
  3. 0

    try add where before map
    and ! instead of ??""

    like this :

          return ListView(
        children: snapshot.data!.docs.where((e)=>e!=null).map(
          (DocumentSnapshot document) {
            Map<String, dynamic>? data =
                document.data() as Map<String, dynamic>;

            return MovieItem(data[Index]!);
          },
        ).toList(),

    because some of docs items is is null and you cannot replace it with String

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search