Flutter app struggling to fetch data from RapidAPI

Other Questions RapidAPI
1

I’m having trouble getting my Flutter app to connect with a RapidAPI endpoint. I’ve been trying different approaches but can’t seem to get it working. The app just shows a loading spinner that never stops.

Here’s a simplified version of my API service:

import 'package:http/http.dart' as http;
import 'dart:convert';

class PropertyFetcher {
  Future<List<RealEstate>?> fetchListings() async {
    var url = Uri.https('realestate-api.example.com', '/listings/details', {'listingId': '1234567'});

    var response = await http.get(url, headers: {
      'X-API-Host': 'realestate-api.example.com',
      'X-API-Key': 'your-api-key-here',
      'UseQueryString': 'true'
    });

    if (response.statusCode == 200) {
      return json.decode(response.body);
    } else {
      throw Exception('Data fetch failed');
    }
  }
}

I’ve also created a model class for the data and a widget to display it. The widget shows a loading spinner, but it never gets replaced with the actual data. Any ideas on what might be going wrong or how to debug this issue?

2

I’ve dealt with similar RapidAPI integration issues in Flutter. One potential problem is error handling. Your current code only checks for a 200 status code, but there could be other successful responses or specific error codes you need to handle.

Consider expanding your error handling:

if (response.statusCode >= 200 && response.statusCode < 300) {
  // Success - parse the JSON
  var jsonData = json.decode(response.body);
  // Convert jsonData to your RealEstate objects
  return convertToRealEstateList(jsonData);
} else if (response.statusCode == 401) {
  throw Exception('Unauthorized - check your API key');
} else {
  throw Exception('Failed to load data: ${response.statusCode}');
}

Also, ensure you’re properly converting the JSON to your RealEstate objects. The json.decode() doesn’t automatically create your model objects. You’ll need to implement that conversion yourself.

Lastly, double-check your API key and endpoint URL. Sometimes the issue is as simple as a typo in these crucial details.

3

I’ve encountered similar issues when working with RapidAPI endpoints in Flutter. One thing that jumps out is the ‘UseQueryString’ header - I don’t believe that’s a standard HTTP header, and it might be causing issues with your request.

Instead, try moving the query parameters directly into the URL:

var url = Uri.parse('https://realestate-api.example.com/listings/details?listingId=1234567');

Also, make sure you’re properly handling the JSON response. The json.decode() method returns a Map<String, dynamic>, not a List<RealEstate>. You’ll need to parse this into your model objects.

Lastly, add some error handling and logging to help debug:

try {
  var response = await http.get(url, headers: headers);
  print('Response status: ${response.statusCode}');
  print('Response body: ${response.body}');
  // ... rest of your code
} catch (e) {
  print('Error occurred: $e');
  throw Exception('Data fetch failed');
}

This should give you more insight into what’s happening with your API calls. Hope this helps!

4

hey mate, i had a similar issue. try adding some print statements in ur fetchListings function to see whats goin on. like print the response body and status code. also, make sure ur parsing the json correctly. the json.decode might not give u a List directly. u might need to map it first. hope this helps!