Wysylanie smsa z komorki, bez wpisywania w wyslanych smsach

Dzien dobry

Wysylam smsa z komorki poprzez ponizszy kod. Komorka wysyla i dodaje go w wyslanych smsach. Czy mozna jakos zablokowac ta czynnosc tzn. sms poszedl, nie wpisujac go w wyslanych smsach komorki nadawcy?

import android.Manifest;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    String number = "505xxxxxx";

    // sprawdzenie i uruchonienie sms
    private Context context;
    private Activity activity;
    private static final int PERMISSION_REQUEST_CODE = 1;
    //

    // wysylanie sms
    private final int MY_PERMISSIONS_REQUEST_SEND_SMS = 1;
    private final String SENT = "SMS_SENT";
    private final String DELIVERED = "SMS_DELIVERED";
    PendingIntent sentPI, deliveredPI;
    BroadcastReceiver smsSentReceiver, smsDeliveredReceiver;
    //

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // sprawdzenie i uruchonienie uslugi sms
        context = getApplicationContext();
        activity = this;
        if (checkPermissionSMS()) {
        } else {
            requestPermissionSMS();
        }
        //

        // wysylanie sms
        sentPI = PendingIntent.getBroadcast(this, 0, new Intent(SENT), 0);
        deliveredPI = PendingIntent.getBroadcast(this, 0, new Intent(DELIVERED), 0);
        String message = "tekst";
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String [] {Manifest.permission.SEND_SMS}, MY_PERMISSIONS_REQUEST_SEND_SMS);
        } else {
            SmsManager sms = SmsManager.getDefault();
            sms.sendTextMessage(number, null, message, sentPI, deliveredPI);
        }
        //
    }

    // sprawdzenie i uruchonienie uslugi sms
    private boolean checkPermissionSMS() {
        int result = ContextCompat.checkSelfPermission(context, Manifest.permission.SEND_SMS);
        if (result == PackageManager.PERMISSION_GRANTED) {
            return true;
        } else {
            return false;
        }
    }
    //
    private void requestPermissionSMS(){
        if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.SEND_SMS)){
            Toast.makeText(context, "SMS jest wyłączony i nie może byc włączony automatycznie", Toast.LENGTH_LONG).show();
        } else {
            ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.SEND_SMS},PERMISSION_REQUEST_CODE);
        }
    }
    //

    // wysylanie sms
    @Override
    protected void onPause() {
        super.onPause();
        unregisterReceiver(smsSentReceiver);
        unregisterReceiver(smsDeliveredReceiver);
    }
    //
    @Override
    protected void onResume() {
        super.onResume();
        smsSentReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(context, "SMS sent successfully!", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Toast.makeText(context, "Generic failure!", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                        Toast.makeText(context, "No service!", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(context, "Null PDU!", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(context, "Radio off!", Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        };
        smsDeliveredReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                switch(getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(context, "SMS delivered!", Toast.LENGTH_SHORT).show();
                        break;
                    case Activity.RESULT_CANCELED:
                        Toast.makeText(context, "SMS not delivered!", Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        };
        registerReceiver(smsSentReceiver, new IntentFilter(SENT));
        registerReceiver(smsDeliveredReceiver, new IntentFilter(DELIVERED));
    }
    //
}

pozdrawiam
_duszek

Począwszy od Androida 4.4 zapisywanie smsów jest domyślne, ale możesz go usunąć natychmiast po wysłaniu.