BroadcastRiver register edilmesine rağmen çağırılmıyor

Kod bu fakat BroadcastReceiver'ı ne yaptıysam çağıramadım bir işlevi yokmuş gibi kod fazlalığıymış gibi çalışıyor etkin değil daha doğrusu . Eksik yaptığım bir şeyler mi var acaba ?

[code]

package doruk.bodyhealth;

import android.annotation.SuppressLint;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.IBinder;
import android.os.Vibrator;
 
public class Servis extends Service implements SensorEventListener {
 
    SensorManager sManager;
    Sensor sensor;
    private Vibrator vibrator;
    boolean flag,sflag=true;
    Intent intent;
    ScreenReceiver s;
    
    //PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 
    private BroadcastReceiver broadcastReceiver= new BroadcastReceiver() {
        
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
                sManager.unregisterListener(Servis.this);
                sManager.registerListener(Servis.this, sensor,
                        SensorManager.SENSOR_DELAY_NORMAL);
                flag=false;
            }
        }
    };
 
    @Override
    public void onCreate() {
        sManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        sensor = sManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

        /*IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
        filter.addAction(Intent.ACTION_SCREEN_OFF);
        BroadcastReceiver mReceiver = new ScreenReceiver();
        registerReceiver(mReceiver, filter);*/
        flag=true;

        //IntentFilter filter2 = new IntentFilter(Intent.ACTION_SCREEN_OFF);
        registerReceiver(broadcastReceiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));
        
        sManager.registerListener(this, sensor,
                SensorManager.SENSOR_DELAY_NORMAL);
        
        vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
    }
 
    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

    @Override
    public void onStart(Intent intent, int startId) {
        
        boolean screenOn = intent.getBooleanExtra("screen_state", false);
        if (!screenOn) {
            sflag=false;
        } else {
            sflag=true;
        }
    }
 
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return Service.START_NOT_STICKY;
    }
 
    @Override
    public void onDestroy() {
        super.onDestroy();
        unregisterReceiver(broadcastReceiver);
    }
 
    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
    }
 
    @SuppressLint("NewApi")
    @Override
    public void onSensorChanged(SensorEvent event) {
        
        if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
            float z = event.values[2];
            //AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            if (z<5 && flag==true && sflag==true) {
                vibrator.vibrate(200);
                flag=false;
                //audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
            } 
            /*else {
                audioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT);
            }*/
        }
    }
}

[/code]