ارسال اطلاعات توسط سنسور، از سرویس به اکتیویتی

دوستان من کماکان درگیر این موضوع هستم. این کد رو برای MyService پیدا کردم ولی دوتا ارور داره که نمیتونم استفاده کنم. نظرتون چیه ؟ 

 package alfredo.uzumaki.app;

import android.app.Service;
import android.content.Intent;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.IBinder;
import android.widget.Toast;


public class MyService extends Service implements SensorEventListener {

    Sensor        proxSensor;
    SensorManager sm;


    @Override
    public void onCreate() {//onCreat shouldn't be used for sensor u should use onStartCommand
        Toast.makeText(this, "Service Created", Toast.LENGTH_SHORT).show();
    }


    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // TODO Auto-generated method stub

    }


    @Override
    public void onSensorChanged(SensorEvent event) {
        // TODO Auto-generated method stub
        //here u should use the following code otherwise your sensor will be crazy
        if (event.values[0] == 0) {
            Toast.makeText(this, "Sensor Working", Toast.LENGTH_SHORT).show();

            Intent panel = new Intent(this, Testnumber1000Activity.class);

            startActivity(panel);
        }
    }


    @Override
    public void onDestroy() {//here u should unregister sensor
        Toast.makeText(this, "Service Stopped", Toast.LENGTH_LONG).show();
        sm.unregisterListener(this);
    }


    @Override
    //here u should register sensor and write onStartCommand not onStart
    public int onStartCommand(Intent intent, int flags, int startId) {
        Toast.makeText(this, "Service Started", Toast.LENGTH_SHORT).show();
        sm = (SensorManager) getSystemService(SENSOR_SERVICE);
        proxSensor = sm.getDefaultSensor(Sensor.TYPE_PROXIMITY);
        sm.registerListener(this, proxSensor, SensorManager.SENSOR_DELAY_NORMAL);

        //here u should make your service foreground so it will keep working even if app closed

         NotificationManager mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
                Intent bIntent = new Intent(MyService.this, Testnumber1000Activity.class);
                PendingIntent pbIntent = PendingIntent.getActivity(MyService.this, 0, bIntent, 0);
                NotificationCompat.Builder bBuilder =        <==== این خط اون کلمه اولش ارور میده که میگه لایبراریش موجود نیست 
                        new NotificationCompat.Builder(this)
                                .setSmallIcon(R.drawable.ic_launcher)
                                .setContentTitle("Title")
                                .setContentText("Subtitle")
                                .setAutoCancel(true)
                                .setOngoing(true)
                                .setContentIntent(pbIntent);
                barNotif = bBuilder.build();   <------------- barNotif cannot be resolved to a variable این هم ارور این خط
                this.startForeground(1, barNotif);
        //then you should return sticky
        return Service.START_STICKY;
    }


    @Override
    public IBinder onBind(Intent arg0) {
        // TODO Auto-generated method stub
        return null;
    }
}