Не може да се извика метод на Bluetooth BroadcastReceiver в услуга

Имам този клас на обслужване:

 public class BluetoothService extends Service {

    private static Activity mActivity;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
        this.registerReceiver(bluetoothReceiver, intentFilter);     
    }

    @Override
    public void onDestroy() {
        if (bluetoothReceiver != null) {
            this.unregisterReceiver(bluetoothReceiver);
        }       
    }

    @Override
    public void onStart(Intent intent, int startid) {
           //
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {        
        return START_STICKY;
    }

    public static BroadcastReceiver bluetoothReceiver = new BroadcastReceiver(){
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
                final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
                TextView tvStatus = (TextView) mActivity.findViewById(R.id.tvtatus);
                Messaging.appendMessage(tvStatus, Bluetooth.getDeviceState(state));
                if (Bluetooth.isBluetoothEnabled()) {
                    Messaging.appendMessage(tvStatus, Bluetooth.showMessage());
                }               
            }
        }
    };  
}

И в моя клас по активност имам това:

public class MainActivity extends Activity {

    private TextView tvStatus;
    private Intent intentBluetooth;

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

       tvStatus = (TextView)findViewById(R.id.tvtatus);

       intentBluetooth = new Intent(this, BluetoothService.class);
       startService(intentBluetooth);
    }
}

Методът BroadcastReceiver (bluetoothReceiver) в класа Service никога не се извиква. Не знам защо. Ако имам кодовете IntentFilter и BroadcastReceiver преди всичко в дейност, тогава работи - но не и в [отделна] услуга. Смаян съм.

Моят AndroidManifest.xml е:

    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.onegoal.androidexample"
        android:versionCode="1"
        android:versionName="1.0.0" 
        android:installLocation="auto"
        android:hardwareAccelerated="true">

        <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="15" />

        <uses-permission android:name="android.permission.BLUETOOTH" />
        <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
        <uses-feature android:name="android.hardware.bluetooth" android:required="false" /> 

        <application
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name"
            android:theme="@style/AppTheme" 
            android:debuggable="true" >
            <activity
                android:name=".MainActivity"
                android:label="@string/app_name"
                android:theme="@android:style/Theme.NoTitleBar" >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
            <service android:name=".BluetoothService">
            </service>
        </application>  
    </manifest>

Нов съм в Android, така че това, което правя, може да не е най-доброто. Надявам се някой да ми помогне.