connectivity_watcher

A lightning-fast Flutter plugin for true internet connectivity monitoring. Most connectivity packages only check if the device's Wi-Fi or Mobile radio is "on." ZoConnectivityWatcher goes further by implementing a real-time Heartbeat Strategy (inspired by high-performance games like Clash of Clans and PUBG). It ensures your app knows when the internet is actually reachable, detecting "Liar Wi-Fi" (connected to a router but no data flow) in sub-second time.

Custom UI	SnackBar Style	Alert Dialog

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🧑‍💻 Getting Started

1. Install the package

dependencies:
  flutter:
    sdk: flutter
  connectivity_watcher: ^[latest_version]

2. Import it

import 'package:connectivity_watcher/connectivity_watcher.dart';

3. Initialize it in main.dart

Basic Setup

Initialize the watcher in your main.dart. By default, it uses DNS socket checks (Google/Cloudflare) to verify connectivity.

WidgetsFlutterBinding.ensureInitialized();
ZoConnectivityWatcher().setUp();

Advanced: Custom Heartbeat & Timing

If you want to use your own website as the source of truth (highly recommended to bypass DNS blocks), pass a StealthInternetChecker instance to the setUp method.

ZoConnectivityWatcher().setUp(
  internetChecker: StealthInternetChecker(
    heartbeatUrl: "https://your-website.com", 
    checkInterval: Duration(seconds: 10),    
    timeout: Duration(seconds: 5),           
  ),
);

🔌 Basic Usage

Wrap Your App

Use ZoConnectivityWrapper at the root of your app to monitor connection changes:

ZoConnectivityWrapper(
  connectivityStyle: NoConnectivityStyle.SNACKBAR,
  builder: (context, connectionKey) {
    return MaterialApp(
      navigatorKey: connectionKey,
      home: LoginDemo(),
    );
  },
);

Use Prebuilt UI Styles

Snackbar Style

connectivityStyle: NoConnectivityStyle.SNACKBAR,

Alert Dialog Style

connectivityStyle: NoConnectivityStyle.ALERT,

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🧩 Custom Offline Widget

Want to show your own offline UI? Use NoConnectivityStyle.CUSTOM:

ZoConnectivityWrapper(
  connectivityStyle: NoConnectivityStyle.CUSTOM,
  offlineWidget: CustomNoInternetWrapper(
    builder: (context) => CustomNoInternet(),
  ),
  builder: (context, connectionKey) => MaterialApp(
    navigatorKey: connectionKey,
    home: LoginDemo(),
  ),
);

The widget is auto-removed once the internet is back. You can also remove it manually:

bool removed = await ZoConnectivityWatcher().hideNoInternet();
if (!removed) {
  print("Still no internet");
}

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🔁 API Call with Retry

Automatically retries failed API calls after connectivity is restored:

ZoConnectivityWatcher().makeApiCallWithRetry(
  maxRetries: 2,
  delay: const Duration(seconds: 1),
  apiCall: () async {
    final dio = Dio();
    dio.interceptors.add(CurlInterceptor());

    final response = await dio.post(
      "https://jsonplaceholder.typicode.com/posts",
      data: {
        "title": 'foo',
        "body": 'bar',
        "userId": 1,
      },
    );
  },
);

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🌐 Check Internet Manually

bool hasInternet = await ZoConnectivityWatcher().isInternetAvailable;

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🧠 Network-Aware Widgets

Use ZoNetworkAwareWidget to render UI based on real-time connectivity:

ZoNetworkAwareWidget(
  builder: (context, status) {
    return Container(
      height: 50,
      width: 250,
      decoration: BoxDecoration(
        color: Colors.blue,
        borderRadius: BorderRadius.circular(20),
      ),
      child: MaterialButton(
        onPressed: () {},
        child: Text(
          status == ConnectivityWatcherStatus.connected ? 'Connected' : 'Disconnected',
          style: TextStyle(color: Colors.black, fontSize: 25),
        ),
      ),
    );
  },
);

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🧪 Curl Logging for Dio

Log API requests as curl commands:

final dio = Dio();
dio.interceptors.add(CurlInterceptor());

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🛠️ Feature Requests & Bugs

Have an idea or found a bug? Open an issue on GitHub.

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