main.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  
    // Get Data
  Future<bool> getCurrentUser() async {
 return  Future.delayed(Duration(seconds: 2), () => true,);
  }

  @override
  Widget build(BuildContext context) {
   return Scaffold(
     appBar: AppBar(
          title : Text(widget.title)     
     ),
     
     body : FutureBuilder<bool>(
         future: getCurrentUser(),
        builder: (context, AsyncSnapshot<bool> snapshot) {
           print("snapshot data");
          Text(snapshot.hasData.toString());
          if (snapshot.hasData) {
            return Text(snapshot.data.toString());
          }
          else if(snapshot.data == false)
          {
             return Text("sdgsdf");
          }
          // By default, show a loading spinner.
    return CircularProgressIndicator();
        }));

  }
}