Sensors Info Android Java

public class SensorsInfo extends Fragment
{
    private ListView lvSensorsInfo;
    private DeviceListAdapter adapter;
    private List<Device> mSensorsInfoList;
    private TextView sensorsCount;

    private SensorManager mSensorManager;
    private SensorEventListener mSensorListener;
    private Sensor mSensor;

    public SensorsInfo()
    {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState)
    {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_sensors_info, null);
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState)
    {
        super.onViewCreated(view, savedInstanceState);

        mSensorManager = (SensorManager) getActivity().getSystemService(Context.SENSOR_SERVICE);
        mSensorListener = new SensorEventListener()
        {
            @Override
            public void onAccuracyChanged(Sensor arg0, int arg1)
            {
            }

            @Override
            public void onSensorChanged(SensorEvent event)
            {
                Sensor sensor = event.sensor;
            }
        };

        lvSensorsInfo = (ListView) view.findViewById(R.id.sensorsList);
        sensorsCount = (TextView) view.findViewById(R.id.sensorsCount);

        mSensorsInfoList = new ArrayList<>();
        adapter = new DeviceListAdapter(getActivity().getApplicationContext(), mSensorsInfoList);
        lvSensorsInfo.setAdapter(adapter);

        sensorsinfo();

        sensorsCount.setText(String.valueOf("Sensors count: " + mSensorsInfoList.size()));
    }

    private String sensorsinfo()
    {
        int i = 0;
        for (Sensor sensor : listSensors())
        {
            mSensorsInfoList.add(new Device(i, getSensorTitle(sensor), ""));
            i++;
        }
        adapter.notifyDataSetChanged();

        return "";
    }

    public List<Sensor> listSensors()
    {
        return ((SensorManager) getContext().getSystemService("sensor")).getSensorList(-1);
    }

    public String getSensorInfo(Sensor sensor)
    {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append(sensor.getName()).append("\n");
        stringBuilder.append("Vendor: ").append(sensor.getVendor()).append("\n");
        stringBuilder.append("Version: ").append(sensor.getVersion()).append("\n");
        stringBuilder.append("Power usage: ").append(sensor.getPower()).append(" mA").append("\n");
        stringBuilder.append("Resolution: ").append(sensor.getResolution()).append("\n");
        stringBuilder.append("Range: ").append(sensor.getMaximumRange()).append("\n");

        return stringBuilder.toString();
    }

    public String getSensorTitle(Sensor sensor)
    {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append(sensor.getName()).append(" - ");
        stringBuilder.append(sensor.getVendor());

        return stringBuilder.toString();
    }
}