android - "if" in method on the BroadcastReceiver service will not work -

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i have problem checking variables in "if". userphonenumber variable sharedpreferences , phonenumber of smsmessage.

i displaying toast both variables , same, if didn't work. problem?

my broadcastreceiver class:

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;   // 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 map of extended data intent.     final bundle bundle = intent.getextras();      try {         if (bundle != null) {             final object[] pdusobj = (object[]) bundle.get("pdus");              (int = 0; < pdusobj.length; i++) {                 smsmessage currentmessage = smsmessage.createfrompdu((byte[]) pdusobj[i]);                 string phonenumber = currentmessage.getdisplayoriginatingaddress().tostring();                  sendernum = phonenumber;                 message = currentmessage.getdisplaymessagebody();                  turnon(context);             } // end loop         } // bundle 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  = 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(); } 

sendernum it's string means if should be:

if (sendernum.equals(userphonenumber))