wifi_scan 0.1.0

Flutter plugin to scan for WiFi access points.

| wifi_scan

---

This plugin allows Flutter apps to trigger WiFi scan and get scanned results.

This plugin is part of WiFiFlutter suite, enabling various WiFi services for Flutter.

Platform Support

Platform	Status	Min. Version	API	Notes
Android	✔️	16 (J)	Scan related APIs in WifiManager [Guide]	For SDK >= 26(O) scans are throttled.
iOS	✔️	9.0	No API available	Dummy implementation with sane static returns.

Usage

The entry point for the plugin is the singleton instance WiFiScan.instance.

Start scan

You can trigger full WiFi scan with WiFiScan.startScan API, as shown below:

// check if platform support and necessary requirements
final can = await WiFiScan.instance.canStartScan(askPermissions: true);
switch(can) {
  case CanStartScan.yes:
    // start full scan async-ly
    final isScanning = await WiFiScan.instance.startScan();
    //...
    break;
  // ... handle other cases of CanStartScan values
}

For more details, you can read documentation of WiFiScan.startScan, WiFiScan.canStartScan and CanStartScan.

Get scanned results

You can get scanned results with WiFiScan.getScannedResults API, as shown below:

// check if platform support and necessary requirements
final can = await WiFiScan.instance.canGetScannedResults(askPermissions: true);
switch(can) {
  case CanGetScannedResults.yes:
    // get scanned results
    final accessPoints = await WiFiScan.instance.getScannedResults();
    // ...
    break;
  // ... handle other cases of CanGetScannedResults values
}

NOTE: getScannedResults API can be used independently of startScan API. This returns the latest available scanned results.

For more details, you can read documentation of WiFiScan.getScannedResults, WiFiAccessPointdoc_WiFiAccessPoint, WiFiScan.canGetScannedResults and CanGetScannedResults.

Get notified when scanned results available

You can get notified when new scanned results are available, as shown below:

// initialize accessPoints and subscription
List<WiFiAccessPoint> accessPoints = [];
StreamSubscription<List<WiFiAccessPoint>>? subscription;

void _startListeningToScannedResults(){
// check if platform support and necessary requirements
  final can = await WiFiScan.instance.canGetScannedResults(askPermissions: true);
  switch(can) {
    case CanGetScannedResults.yes:
      // listen to onScannedResultsAvailable stream
      subscription = WiFiScan.instance.onScannedResultsAvailable.listen((results) {
        // update accessPoints
        setState(() => accessPoints = results);
      });
      // ...
      break;
    // ... handle other cases of CanGetScannedResults values
  }
}

// make sure to cancel subscription after you are done
@override
dispose() {
  super.dispose();
  subscription?.cancel();
}

Additionally, WiFiScan.onScannedResultsAvailable API can also be used with Flutter's StreamBuilder widget.

NOTE: onScannedResultsAvailable API can be used independently of startScan API. The notification can also be result of a full scan performed by platform or other app.

For more details, you can read documentation of WiFiScan.onScannedResultsAvailable, WiFiAccessPointdoc_WiFiAccessPoint, WiFiScan.canGetScannedResults and CanGetScannedResults.

Resources

• 📖API docs
• 💻Example app

Issues and feedback

Please file WiFiFlutter specific issues, bugs, or feature requests in our issue tracker.

To contribute a change to this plugin, please review plugin checklist for 1.0, our contribution guide and open a pull request.