locality_social_cloud 1.7.0

locality_social_cloud: ^1.7.0 copied to clipboard

example/locality_social_cloud_example.dart

import 'package:flutter/material.dart';
import 'package:locality_social_cloud/api/locality_social_cloud.dart';
import 'package:provider/provider.dart';

Future<LocalitySocialCloud?> startCloud() async {
  return LocalitySocialCloud.up(
    appId: "YOUR_APP_ID",

    /// NOTE: The last letter of your app secret is '='; It is NOT whitespace
    appSecret: "YOUR_APP_SECRET",
    username: "YOUR_USERNAME",
    password: "YOUR_PASSWORD",
    onError: (AuthError error) {
      print(error.toString());
    },
  );
}

GlobalClickCounter globalClickCounter = GlobalClickCounter();

void main() async {
  LocalitySocialCloud? myCloud = await startCloud();
  if (myCloud != null) {
    print("Locality Social Cloud was started!");
  }
  LocalitySocialCloud.supervise(globalClickCounter);
  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => globalClickCounter),
      ],
      child: const MyApp(),
    ),
  );
}

class GlobalClickCounter extends ThrottledChangeNotifier with PubSub {
  int counter = 0;

  /// This is a global click counter. All users can increase the click counter. All users see the same click counter.
  @override
  String getTopic() {
    return 'global-click-counter';
  }

  void increaseCounterByOne() {
    print("INCERASE COUNTER");
    send('increaseCounter', {'amount': 1});
  }

  @override
  void onReceive(LocalityEvent localityEvent) {
    switch (localityEvent.event) {
      case 'increaseCounter':
        counter += localityEvent.payload['amount'] as int;
        notifyListeners();
        break;
    }
  }
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  Widget build(BuildContext context) {
    final globalClickCounter = Provider.of<GlobalClickCounter>(context);

    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text('You have pushed the button this many times globally:'),
            Consumer<GlobalClickCounter>(
              builder: (context, globalClickCounter, child) => Text(
                '${globalClickCounter.counter}',
                style: Theme.of(context).textTheme.headlineMedium,
              ),
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          globalClickCounter.increaseCounterByOne();
        },
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}