MyApp26April.dart

class MyApp26April extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Server',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.pink,
      ),
      home: MyHomePage(title: 'Flutter Server App'),
    );
  }
}

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

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

class _MyHomePageState extends State<MyHomePage> {
  StreamController<Map> _streamController = StreamController<Map>();
  Timer _timer;

  Future getData() async {
    var url = 'https://milk-white-reveille.000webhostapp.com/get.php';
    http.Response response = await http.get(url);
    Map data = json.decode(response.body);

    //Add your data to stream
    _streamController.add(data);
  }

  @override
  void initState() {
    getData();

    //Check the server every 5 seconds
    _timer = Timer.periodic(Duration(seconds: 5), (timer) => getData());

    super.initState();
  }

  @override
  void dispose() {
    //cancel the timer
    if (_timer.isActive) _timer.cancel();

    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
        centerTitle: true,
      ),
      body: StreamBuilder<Map>(
        stream: _streamController.stream,
        builder: (BuildContext context, AsyncSnapshot snapshot) {
          if (snapshot.hasData)
            return ListView(
              children: [
                ListTile(
                  title: Text(snapshot.data['title']),
                  subtitle: Text(snapshot.data['type']),
                ),
              ],
            );
          return Text('Loading...');
        },
      ),
    );
  }
}