Android: Stop/Start service depending on WiFi state?

Question

In the android application that I\'m designing, my service only needs to be running when the device is connected to the router (via WiFi obviously). I\'m really new to andro

Answer 1

To start/stop your service when supplicant Wifi state is ok/nok:

• register a BroadcastReceiver to recieve WIFI state change broadcasted intents
• inside your BroadCastReceiver check the intent validity then start your service

So register your broadcast receiver to receive WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION. Add permission android.permission.CHANGE_WIFI_STATE or android.permission.ACCESS_NETWORK_STATE. I'm not sure if it is necessary or not.

Then a sample broadcast receiver code could be:

public class MyWifiStatereceiver extends BroadcastReceiver {
    //Other stuff here 

    @Override
    public void onReceive(Context context, Intent intent) {
       Intent srvIntent = new Intent();
       srvIntent.setClass(MyService.class);
       boolean bWifiStateOk = false;

       if (WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION.equals(intent.getAction()) {
           //check intents and service to know if all is ok then set bWifiStateOk accordingly
           bWifiStateOk = ... 
       } else {
           return ; // do nothing ... we're not in good intent context doh !
       }

       if (bWifiStateOk) {
           context.startService(srvIntent);
       } else {
           context.stopService(srvIntent);
       }
    }

}