How to get the connection strength of Wifi access points?

Question

I am building an application reading the signal strength of each available Wifi access point.

I\'ve written code like:

    wifi = (WifiManager) getS         


        

Answer 1

mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
receiverWifi = new WifiReceiver();
    registerReceiver(receiverWifi, new IntentFilter(
            WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
class WifiReceiver extends BroadcastReceiver {
    public void onReceive(Context c, Intent intent) {

        List wifiList = mainWifi.getScanResults();
        ArrayList m4MessagesList = new ArrayList();
        for (int i = 0; i < wifiList.size(); i++) {
            ScanResult scanResult = wifiList.get(i);
            WifiConnectionBean bean = new WifiConnectionBean();
            bean.setConnectionName(scanResult.SSID); // + "--" +
                                                        // scanResult.frequency);
            bean.setDescription(scanResult.capabilities);
            bean.setId(scanResult.SSID);
            bean.setLevel(String.valueOf(scanResult.level));
            bean.setSignalStrength(String.valueOf(scanResult.BSSID));
            m4MessagesList.add(bean);
        }
        if (m4MessagesList == null) {
            Toast.makeText(WifiIdentificationActivity.this,
                    "WifiConnection not available", Toast.LENGTH_SHORT)
                    .show();
        } else {
            String message = "Scanning complete. " + m4MessagesList.size()
                    + " connections found!";
        }
        pd.dismiss();

    }
}

where scanResult.SSID gives the signal strength.