Flutter2Start - http initState & setState #flutter2start

main.dart

// ignore_for_file: use_key_in_widget_constructors, prefer_const_constructors, prefer_const_literals_to_create_immutables

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

void main() {
  runApp(App());
}

class App extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  String responseBody = "";
  bool isLoading = false;

  @override
  void initState() {
    super.initState();
    startMakingRequest();
  }

  void startMakingRequest() async {
    setState(() {
      isLoading = true;
    });

    final url = Uri.parse("https://edu.fudeo.it/");
    final response = await http.get(url);

    setState(() {
      isLoading = false;
    });

    if (response.statusCode == 200) {
      setState(() {
        responseBody = response.body;
      });
    } else {
      setState(() {
        responseBody = "ERROR";
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Flutter2Start"),
        centerTitle: true,
      ),
      body: Center(child: body()),
    );
  }

  Widget body() => isLoading ? SizedBox(width: 40, height: 40, child: CircularProgressIndicator()) : Text(responseBody);
}