//	@Override
    public void onSensorChanged(SensorEvent event) {
      if (event.sensor.getType() == Sensor.TYPE_PRESSURE) {
        FluidPressure msg = this.publisher.newMessage();
        long time_delta_millis = System.currentTimeMillis() - SystemClock.uptimeMillis();
        msg.getHeader().setStamp(Time.fromMillis(time_delta_millis + event.timestamp / 1000000));
        msg.getHeader().setFrameId("/android/barometric_pressure"); // TODO Make parameter

        msg.setFluidPressure(100.0 * event.values[0]); // Reported in hPa, need to output in Pa
        msg.setVariance(0.0);

        publisher.publish(msg);
      }
    }