API Calling with HTTP Library (Fifth API)

 import "dart:convert";

import "package:flutter/material.dart";
import "package:http/http.dart" as http;

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Fifth API Integration",
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        appBarTheme: const AppBarTheme(
          backgroundColor: Colors.grey,
          centerTitle: true,
        ),
      ),
      home: const FifthApi(),
    );
  }
}

class FifthApi extends StatefulWidget {
  const FifthApi({super.key});

  @override
  State<FifthApi> createState() {
    return FifthApiState();
  }
}

class FifthApiState extends State<FifthApi> {

  Future<List<FifthModel>> fetchFifthModel() async {
    final response = await http.get(
      Uri.parse("https://jsonplaceholder.typicode.com/posts/1/comments"),
    );

    if (response.statusCode == 200) {
      Iterable jsonResponse = jsonDecode(response.body);

      List<FifthModel> dataInputs = jsonResponse.map(
        (model) {
          return FifthModel.fromJson(model);
        },
      ).toList();
      return dataInputs;
    } else {
      throw Exception("Failed to load Exception");
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          "Fifth API Integration",
          style: TextStyle(fontWeight: FontWeight.bold),
        ),
      ),
      body: Center(
        child: FutureBuilder<List<FifthModel>>(
          future: fetchFifthModel(),
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              List<FifthModel>? data = snapshot.data;
              return ListView.builder(
                itemCount: data!.length,
                itemBuilder: (context, index) {
                  return Card(
                    child: ListTile(
                      title: Text(
                        data[index].id.toString(),
                        style: const TextStyle(
                            fontWeight: FontWeight.bold, fontSize: 20.0),
                      ),
                      subtitle: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            "Name : ${data[index].name}",
                            style: const TextStyle(fontWeight: FontWeight.bold),
                          ),
                          const SizedBox(height: 10.0),
                          Text(
                            "Email : ${data[index].email}",
                            style: const TextStyle(fontWeight: FontWeight.bold),
                          ),
                          const SizedBox(height: 10.0),
                          Text("Body : ${data[index].body}"),
                        ],
                      ),
                      trailing: Text(
                        data[index].postId.toString(),
                        style: const TextStyle(
                            fontWeight: FontWeight.bold, fontSize: 15.0),
                      ),
                    ),
                  );
                },
              );
            } else if (snapshot.hasError) {
              return Text("Error : ${snapshot.error}");
            } else {
              return const Center(
                child: CircularProgressIndicator(),
              );
            }
          },
        ),
      ),
    );
  }
}

class FifthModel {
  final int postId;
  final int id;
  final String name;
  final String email;
  final String body;

  FifthModel(
      {required this.postId,
      required this.id,
      required this.name,
      required this.email,
      required this.body});

  factory FifthModel.fromJson(Map<String, dynamic> json) {
    return FifthModel(
      postId: json["postId"] as int,
      id: json["id"] as int,
      name: json["name"] as String,
      email: json["email"] as String,
      body: json["body"] as String,
    );
  }
}