Android WIFI How To Detect When Specific WIFI Connection is Available

Question

I need to detect when I have network connectivity to a SPECIFIC WIFI network.

For example: As soon as you walk into your house, and your phone picks up your home WiFi network, I would like a notification that says "You are not at your home network, would you like to connect to you Home?" But I would like that to only happen when I am at my specific house.

What should I listen for and what tests should I do to make sure it is my specific home network, and not another network?

Answer 1

You can use BroadcastReceiver to find out that wifi network has changed:

BroadcastReceiver broadcastReceiver = new WifiBroadcastReceiver();  IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION); context.registerReceiver(broadcastReceiver, intentFilter); 

The BroadcastReceiver may look like this. And to check for specific MAC address see the checkConnectedToDesiredWifi() method bellow.

public class WifiBroadcastReceiver extends BroadcastReceiver {      @Override     public void onReceive(Context context, Intent intent) {         String action = intent.getAction();         if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION .equals(action)) {             SupplicantState state = intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE);             if (SupplicantState.isValidState(state)                      && state == SupplicantState.COMPLETED) {                  boolean connected = checkConnectedToDesiredWifi();             }         }     }      /** Detect you are connected to a specific network. */     private boolean checkConnectedToDesiredWifi() {         boolean connected = false;          String desiredMacAddress = "router mac address";          WifiManager wifiManager =              (WifiManager) context.getSystemService(Context.WIFI_SERVICE);          WifiInfo wifi = wifiManager.getConnectionInfo();         if (wifi != null) {             // get current router Mac address             String bssid = wifi.getBSSID();             connected = desiredMacAddress.equals(bssid);         }          return connected;     } } 

Answer 2

As long, as we are nothing like code as you need, for free service, I can only recommend you, to read everything possible about Android and its Network/Wifi possibilities, when creating such app.

• Sources you should read up and study

http://developer.android.com/reference/android/net/wifi/package-summary.html
how to see if wifi is connected in android
How to get my wifi hotspot ssid in my current android system
How to get name of wifi-network out of android using android API?
Get Wifi Interface name on Android

• Permissions you should ask for when creating application manifest

AndroidManifest.xml

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 

(the last one, only if you want it to detect your location, to prevent unnecessary calls)

• You should also declare, that your application needs wifi to be available in device, to work properly:

AndroidManifest.xml

<uses-feature android:name="android.hardware.wifi" />