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Get list of wifi networks in Android
/* ------------------------------------------------------------------------------------------------------------------------------
* SIGNAL MEANING
* -30 dBm Maximum signal strength, you are probably standing right next to the access point.
* -50 dBm Anything down to this level can be considered excellent signal strength.
* -60 dBm Good, reliable signal strength.
* -67 dBm Reliable signal strength. The minimum for any service depending on a reliable connection and signal strength, such as voice over Wi-Fi and non-HD video streaming.
* -70 dBm Not a strong signal. Light browsing and email.
* -80 dBm Unreliable signal strength, will not suffice for most services. Connecting to the network.
* -90 dBm The chances of even connecting are very low at this level.
*/ -----------------------------------------------------------------------------------------------------------------------------
/*
* Needed permission
* <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
* <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
*
*/
private final BroadcastReceiver mWifiScanReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context c, Intent intent) {
if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
List<ScanResult> mScanResults = mWifiManager.getScanResults();
// add your logic here
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState)
{
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
registerReceiver(mWifiScanReceiver,
new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mWifiManager.startScan();
// Turn Wifi ON/OFF
// <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
wifiManager.setWifiEnabled(true);
wifiManager.setWifiEnabled(false);
}
// Asking permission at Runtime
@Override
public void onResume()
{
super.onResume();
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
{
if(checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
{
requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 87);
}
}
}
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