protected void onPause() {

    super.onPause();
    mp.stop();
    mp.reset();
    PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
    boolean isScreenOn = powerManager.isScreenOn();

    if (!isScreenOn) {
      PowerManager.WakeLock wakeLock =
          powerManager.newWakeLock(
              PowerManager.SCREEN_DIM_WAKE_LOCK
                  | PowerManager.ACQUIRE_CAUSES_WAKEUP
                  | PowerManager.ON_AFTER_RELEASE,
              "TEST");
      wakeLock.acquire();
      surfaceCreated(holder);
    }
  }
  public void onCreate() {
    int flags, screenLightVal = 1;
    Sensor mSensor;
    List<Sensor> sensors;

    if (scanData == null) return; // no ScanData, not possible to run correctly...

    PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
    SP = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
    try {
      screenLightVal = Integer.parseInt(SP.getString("screenLight", "2"));
    } catch (NumberFormatException nfe) {
    }
    if (screenLightVal == 1) flags = PowerManager.PARTIAL_WAKE_LOCK;
    else if (screenLightVal == 3) flags = PowerManager.FULL_WAKE_LOCK;
    else flags = PowerManager.SCREEN_DIM_WAKE_LOCK;
    wl = pm.newWakeLock(flags, "OpenWLANMap");
    wl.acquire();
    while (myWLocate == null) {
      try {
        myWLocate = new MyWLocate(this);
        break;
      } catch (IllegalArgumentException iae) {
        myWLocate = null;
      }
      try {
        Thread.sleep(100);
      } catch (InterruptedException ie) {
      }
    }

    try {
      scanData.setUploadThres(Integer.parseInt(SP.getString("autoUpload", "0")));
    } catch (NumberFormatException nfe) {
    }
    try {
      scanData.setNoGPSExitInterval(
          Integer.parseInt(SP.getString("noGPSExitInterval", "0")) * 60 * 1000);
    } catch (NumberFormatException nfe) {
    }

    Intent intent = new Intent(this, OWMapAtAndroid.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intent, 0);

    notification =
        new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.icon)
            .setContentTitle(getResources().getText(R.string.app_name))
            .setContentText("")
            .setContentIntent(pendIntent)
            .build();

    notification.flags |= Notification.FLAG_NO_CLEAR;
    notification.flags |= Notification.FLAG_ONGOING_EVENT;
    startForeground(1703, notification);

    getScanData().setService(this);
    getScanData().setmView(new HUDView(this));
    getScanData().getmView().setValue(getScanData().incStoredValues());
    WindowManager.LayoutParams params =
        new WindowManager.LayoutParams(
            WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
            WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
                | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            PixelFormat.TRANSLUCENT);
    params.gravity = Gravity.LEFT | Gravity.BOTTOM;
    params.setTitle("Load Average");
    WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
    wm.addView(getScanData().getmView(), params);

    sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

    sensorManager.registerListener(
        this,
        sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
        SensorManager.SENSOR_DELAY_GAME);
    sensorManager.registerListener(
        this,
        sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),
        SensorManager.SENSOR_DELAY_GAME);
    sensors = sensorManager.getSensorList(Sensor.TYPE_ACCELEROMETER);
    mSensor = sensors.get(0);
    getScanData().getTelemetryData().setAccelMax(mSensor.getMaximumRange());
    telemetryDir = Environment.getExternalStorageDirectory().getPath() + "/telemetry/";
    File dir = new File(telemetryDir);
    dir.mkdir();

    connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
  }