android preferenceactivity padding in landscape orientation

mOrientationEventListener = new OrientationEventListener(this, SensorManager.SENSOR_DELAY_NORMAL) 
{ 
 @Override
 public void onOrientationChanged(int orientation) 
 {
  mDeviceOrientation = orientation;
 }
};

if(mOrientationEventListener.canDetectOrientation())
{
 mOrientationEventListener.enable();
}

// Divide by 90 into an int to round, then multiply out to one of 5 positions, either 0,90,180,270,360. 
int orientation = 90*Math.round(mDeviceOrientation / 90); 

// Convert 360 to 0
if(orientation == 360)
{
    orientation = 0;
}

SensorManager.remapCoordinateSystem(Rmat, SensorManager.AXIS_Y, SensorManager.AXIS_MINUS_X, R2);

int rotation = ((WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation();
if(rotation == 0) // Default display rotation is portrait
    SensorManager.remapCoordinateSystem(Rmat, SensorManager.AXIS_MINUS_X, SensorManager.AXIS_Y, R2);
else   // Default display rotation is landscape
    SensorManager.remapCoordinateSystem(Rmat, SensorManager.AXIS_Y, SensorManager.AXIS_MINUS_X, R2);