FlutterFlow and Spotify API integration: Step-by-Step Guide 2024

• Click on the 'Create an App' button.
• Fill out the application details:
  • App name
  • App description
  • Redirect URIs (Add the URL that will handle the Spotify OAuth callback, such as https://yourapp.com/callback).
• Agree to the terms and conditions.
• Click on 'Create' to save your new app.
• Save Your Client ID and Client Secret: These will be used for API authentication.

yaml
  dependencies:
    flutter_web_auth: latest\_version
  

• Open your FlutterFlow project.
• Open the main.dart or create a new Dart file for handling authentication.
• Write the authentication logic using the flutter_web_auth package.

  dart
    import 'package:flutter/material.dart';
    import 'package:flutter_web_auth/flutter_web_auth.dart';
    import 'dart:convert';
    import 'package:http/http.dart' as http;
  
    class SpotifyAuth {
      final String clientId;
      final String clientSecret;
      final String redirectUri;
  
      SpotifyAuth({
        required this.clientId,
        required this.clientSecret,
        required this.redirectUri,
      });
  
      Future authenticate() async {
        final url = Uri.https("accounts.spotify.com", "/authorize", {
          "client\_id": clientId,
          "response\_type": "code",
          "redirect\_uri": redirectUri,
          "scope": "user-read-private user-read-email",
        });
  
        final result = await FlutterWebAuth.authenticate(
          url: url.toString(),
          callbackUrlScheme: "yourapp",
        );
  
        final code = Uri.parse(result).queryParameters['code'];
        return code;
      }
  
      Future> getToken(String code) async {
        final response = await http.post(
          Uri.https("accounts.spotify.com", "/api/token"),
          headers: {
            "Content-Type": "application/x-www-form-urlencoded",
          },
          body: {
            "grant_type": "authorization_code",
            "code": code,
            "redirect\_uri": redirectUri,
            "client\_id": clientId,
            "client\_secret": clientSecret,
          },
        );
  
        return json.decode(response.body);
      }
    }
    

• Use the above code within your FlutterFlow app to handle Spotify OAuth authentication.

• Create a new Dart file, e.g., spotify\_service.dart.
• Add the following code to fetch data from Spotify's API.

  dart
    import 'package:http/http.dart' as http;
    import 'dart:convert';
  
    class SpotifyService {
      final String accessToken;
  
      SpotifyService({ required this.accessToken });
  
      Future> getUserProfile() async {
        final response = await http.get(
          Uri.https("api.spotify.com", "/v1/me"),
          headers: {
            "Authorization": "Bearer $accessToken",
          },
        );
  
        return json.decode(response.body);
      }
    }
    

• Navigate to Custom Functions in FlutterFlow.
• Add a custom function for Spotify authentication and data fetching.

• Use FlutterFlow's widget builder to create UI elements.
• Add actions to these widgets that call your Spotify service functions.
• Parse and display data in your FlutterFlow widgets:

  dart
    SpotifyService spotifyService = SpotifyService(accessToken: yourAccessToken);
    final userProfile = await spotifyService.getUserProfile();
  
    setState(() {
      userName = userProfile['display\_name'];
      userEmail = userProfile['email'];
    });