I create an activity
  <activity
            android:name=".GetResponse"

                       android:label="@string/title_activity_main"  
android:launchMode="singleTask">
            <intent-filter>
                <action android:name="ir.smspeik.sms.getresponse" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
               that starts when a sms received. i write this code to
display sms but nothing is shown :
public class GetResponse extends Activity{
    IntentFilter intentFilter;    
    private BroadcastReceiver intentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            //---display the SMS received in the TextView---
            //TextView SMSes = (TextView) findViewById(R.id.textView1);
            Toast.makeText(context, intent.getExtras().getString("sms") +
"Ehsan",
                Toast.LENGTH_SHORT).show();
            String[] sms = intent.getExtras().getString("sms").split("-");
            EditText smsNo = (EditText) findViewById(R.id.txtSmsNo);
            smsNo.setText(sms[0]);
            Toast.makeText(context,sms[0],
                        Toast.LENGTH_SHORT).show();
            TextView smsBody = (TextView) findViewById(R.id.lblSmsBody);
            smsBody.setText(sms[1]);
            Toast.makeText(context,sms[1],Toast.LENGTH_SHORT).show();
        }
    };

     @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.getresponse);
          intentFilter = new IntentFilter();
            intentFilter.addAction("SMS_RECEIVED_ACTION");

            //---register the receiver---
            registerReceiver(intentReceiver, intentFilter);
        }
    }