MyApp.dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:obligatorisk_opgave/util/Launch.dart';
import 'package:obligatorisk_opgave/Services.dart';
import 'package:obligatorisk_opgave/main.dart';

class MyApp extends StatefulWidget {
  MyApp({Key key}) : super(key: key);

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

class _MyAppState extends State<MyApp> {
  Future<Launch> futureLaunch;
  List<Launch> launches = List<Launch>();
  bool isLoading = false;

  @override
  void initState() {
    super.initState();
    futureLaunch = fetchLaunch() as Future<Launch>;
    isLoading = true;
    Services.getLaunches().then((list) {
      setState(() {
        launches = list;
        isLoading = false;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'SpaceX',
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: Scaffold(
            appBar: AppBar(
              title: Text(isLoading ? 'Loading...' : 'SpaceX Launches'),
              centerTitle: true,
            ),
            body: Center(
                child: FutureBuilder<Launch>(
              future: futureLaunch,
              builder: (context, snapshot) {
                if (snapshot.hasData) {
                  return Text(snapshot.data.missionName);
                } else if (snapshot.hasError) {
                  return Text('${snapshot.error}');
                }
                return CircularProgressIndicator();
              },
            ))
  }
}