Mustafa Yıldız tarafından 28 Nisan 2021'de Discord'ta sorduğu soruya cevap olarak oluşturuldu

covid.dart

class Covid {
  String? patients;
  String? totalPatients;
  String? deaths;
  String? totalDeaths;
  String? recovered;
  String? totalRecovered;
  String? totalIntubated;
  String? totalIntensiveCare;
  String? tests;
  String? totalTests;
  String? date;
  String? critical;
  String? pneumoniaPercent;

  Covid({
    this.patients,
    this.totalPatients,
    this.deaths,
    this.totalDeaths,
    this.recovered,
    this.totalRecovered,
    this.totalIntubated,
    this.totalIntensiveCare,
    this.tests,
    this.totalTests,
    this.date,
    this.critical,
    this.pneumoniaPercent,
  });

  Covid.fromJson(Map? json) {
    patients = json!['patients'];
    totalPatients = json['totalPatients'];
    deaths = json['deaths'];
    totalDeaths = json['totalDeaths'];
    recovered = json['recovered'];
    totalRecovered = json['totalRecovered'];
    totalIntubated = json['totalIntubated'];
    totalIntensiveCare = json['totalIntensiveCare'];
    tests = json['tests'];
    totalTests = json['totalTests'];
    date = json['date'];
    critical = json['critical'];
    pneumoniaPercent = json['pneumoniaPercent'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['patients'] = this.patients;
    data['totalPatients'] = this.totalPatients;
    data['deaths'] = this.deaths;
    data['totalDeaths'] = this.totalDeaths;
    data['recovered'] = this.recovered;
    data['totalRecovered'] = this.totalRecovered;
    data['totalIntubated'] = this.totalIntubated;
    data['totalIntensiveCare'] = this.totalIntensiveCare;
    data['tests'] = this.tests;
    data['totalTests'] = this.totalTests;
    data['date'] = this.date;
    data['critical'] = this.critical;
    data['pneumoniaPercent'] = this.pneumoniaPercent;
    return data;
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, this.title}) : super(key: key);

  final String? title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  Future<List<Covid>> _verial() async {
    String adres =
        "https://raw.githubusercontent.com/ozanerturk/covid19-turkey-api/master/dataset/timeline.json";

    try {
      Response cevap = await get(Uri.parse(adres));

      await Future.delayed(Duration(seconds: 2));

      if (cevap.statusCode == 200) {
        Map gelenCevap = jsonDecode(cevap.body);

        List<Covid> covidler = [];

        for (String gelenCevapMapKey in gelenCevap.keys) {
          Covid covid = Covid.fromJson(gelenCevap[gelenCevapMapKey]);
          covidler.add(covid);
        }

        return covidler;
      } else {
        print("Bağlantıdan gelen cevapta sorun oluştu");
      }
    } catch (e) {
      print("hata oluştu");
      print(e);
    }
    return [];
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title!),
      ),
      body: FutureBuilder<List<Covid>>(
        future: _verial(),
        builder: (ctx, snapshot) {
          if (snapshot.hasData)
            return ListView.builder(
              itemCount: snapshot.data!.length,
              itemBuilder: (ctxListView, index) {
                return Card(
                  child: Text(snapshot.data![index].date!),
                );
              },
            );
          return Center(child: CircularProgressIndicator());
        },
      ),
    );
  }
}