title: "if" in method on the BroadcastReceiver service will not work
body: <p>I have a problem with checking variables in the "if". I get a userPhoneNumber variable from SharedPreferences and phoneNumber of SmsMessage.</p>
  
  <p>I will displaying Toast with both variables and they are the same, but the if didn't work. Where is the problem?</p>
  
  <p>My BroadcastReceiver class:</p>
  
  <pre><code>public class IncomingSms extends BroadcastReceiver {
  String userPhoneNumber = "";
  String senderNum= "";
  String message= "";
  final String TAG="LocationService";
  GPSTracker gps;
  double latitude = 0.0;
  double longitude = 0.0;
  
  
  // Get the object of SmsManager
  final SmsManager sms = SmsManager.getDefault();
  
  
  public void onReceive(Context context, Intent intent) {
      SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
      userPhoneNumber = settings.getString("userPhoneNumber", "");
  
      Log.e(TAG, "userPhoneNumber:"+userPhoneNumber);
      int duration = Toast.LENGTH_LONG;
  
      // Retrieves a map of extended data from the intent.
      final Bundle bundle = intent.getExtras();
  
      try {
          if (bundle != null) {
              final Object[] pdusObj = (Object[]) bundle.get("pdus");
  
              for (int i = 0; i &lt; pdusObj.length; i++) {
                  SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
                  String phoneNumber = currentMessage.getDisplayOriginatingAddress().toString();
  
                  senderNum = phoneNumber;
                  message = currentMessage.getDisplayMessageBody();
  
                  turnOn(context);
              } // end for loop
          } // bundle is null
  
      } catch (Exception e) {
          Log.e("SmsReceiver", "Exception smsReceiver" +e);
      }
      Log.i("SmsReceiver", "senderNum: " + senderNum + "userPhoneNumber: "+ userPhoneNumber + "; message: " + message);
  
  
  }
  
  public void turnOn (Context context){
      Intent i  = new Intent(context, MyService.class);
      gps = new GPSTracker(context);
  
      Toast.makeText(context,"Method turnOn!\nsenderNum: "+senderNum + "\n userPhoneNumber: " + userPhoneNumber, Toast.LENGTH_LONG).show();
  
      if (senderNum == userPhoneNumber) {
          Toast.makeText(context,"works in IF", Toast.LENGTH_LONG).show();
          if(gps.canGetLocation()){
              latitude =  gps.getLatitude();
              longitude = gps.getLongitude();
              i.putExtra("Latitude", latitude);
              i.putExtra("Longitude", longitude);
  
              context.startService(i);
          }else
          {
              gps.showSettingsAlert();
          }
      }
      gps.stopUsingGPS();
  }
  </code></pre>