FutureProvider example

futureprovider_example.dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    const appTitle = 'FutureProvider Demo';
    return MaterialApp(
        title: appTitle,
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: FutureProvider<bool>(
          initialData: true,
          builder: (context) {
            // Pretend we're saving data and it takes 4 seconds.
            return Future.delayed(Duration(seconds: 4), () => false);
          },
          child: Scaffold(
            appBar: AppBar(
              title: Text(appTitle),
            ),
            body: Center(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  Consumer<bool>(
                      builder: (context, saving, child) {
                        return Text(saving ? "Saving..." : "Saved!");
                      },
                  ),
                ],
              ),
            ),
          ),
        ));
  }
}

In the consumer widget, we're not specifying what provider we're receiving the value from.. how does the widget knows that we're receiving value from this future provider?

is that because we have only one FutureProvider in the widget tree? so the Consumer widget is smart enough that this is the