Come convertire un programma che utilizza SensorListener a SensorEventListener

Question

Sto creando un'applicazione denominata Compassapp.Ho creato due lezioni di nome Compass.java e Rose.java.Questa applicazione è stata creata da un tutorial descritto in un sito Web e questo utilizza la versione deprecata di SensorListener.La classe Compass.java utilizza questa versione deprecata.L'app ha funzionato bene quando ho usato la versione deprecata.Poi ho pensato di convertire la mia app nella versione corrente che è SensireventListener.Ma la rotazione della bussola si è fermata!Sono bloccato e non so cosa fare.Per favore aiutami.

bussola.java con interfaccia sensorlistente deprecata

  public class Compass extends Activity implements SensorListener {
  SensorManager sensorManager;
  static final int sensor = SensorManager.SENSOR_ORIENTATION;
  MyRose rose;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Set full screen view
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);
    requestWindowFeature(Window.FEATURE_NO_TITLE);

    rose = new MyRose(this);

    setContentView(rose);

    // get sensor manager
    sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
  }

  // register to listen to sensors
  @Override
  public void onResume() {
    super.onResume();
    sensorManager.registerListener(this, sensor);
  }

  // unregister
  @Override
  public void onPause() {
    super.onPause();
    sensorManager.unregisterListener(this);
  }

  // Ignore for now
  public void onAccuracyChanged(int sensor, int accuracy) {
  }

  // Listen to sensor and provide output
  public void onSensorChanged(int sensor, float[] values) {
    if (sensor != Compass.sensor)
      return;
    int orientation = (int) values[0];
    rose.setDirection(orientation);
  }
 }

.

bussola.java con nuovo sensorreventListener

     public class Compass extends Activity{
          SensorManager sensorManager;
          SensorEventListener    listener ;

          static final int sensor = SensorManager.SENSOR_ORIENTATION;
          Rose rose;

          /** Called when the activity is first created. */
          @Override
          public void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);

           // Set full screen view
           getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
           WindowManager.LayoutParams.FLAG_FULLSCREEN);
           requestWindowFeature(Window.FEATURE_NO_TITLE);

           listener = new SensorEventListener()
           {
              @Override
          public void onSensorChanged(SensorEvent e)
          {   
              int orientation = (int) e.values[0];
              rose.setDirection(orientation);
          } 

          @Override
          public void onAccuracyChanged(Sensor arg0, int arg1) {
      // TODO Auto-generated method stub

       }
        };


        setContentView(rose);

       // get sensor manager
       sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
       sensorManager.registerListener(listener,       sensorManager.getDefaultSensor(sensor),SensorManager.SENSOR_MAGNETIC_FIELD);

      }

       // register to listen to sensors
       @Override
      public void onResume() {
      super.onResume();
      sensorManager.registerListener(listener, sensorManager.getDefaultSensor(sensor), SensorManager.SENSOR_MAGNETIC_FIELD);
      }

       // unregister
       @Override
       public void onPause() {
       super.onPause();
       sensorManager.unregisterListener(listener);
       }
     }

.

Answer 1

Penso che questo sia ciò di cui hai bisogno.

public class Compass extends Activity implements SensorEventListener {
  SensorManager sensorManager;
  static final int sensor = SensorManager.SENSOR_ORIENTATION;
  MyRose rose;
  private Sensor myCompassSensor;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Set full screen view
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);
    requestWindowFeature(Window.FEATURE_NO_TITLE);

    rose = new MyRose(this);

    setContentView(rose);

    // get sensor manager
    sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
    // get compass sensor (ie magnetic field)
    myCompassSensor = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
  }

  // register to listen to sensors
  @Override
  public void onResume() {
    super.onResume();
    sensorManager.registerListener(this, myCompassSensor, SensorManager.SENSOR_DELAY_NORMAL);
  }

  // unregister
  @Override
  public void onPause() {
    super.onPause();
    sensorManager.unregisterListener(this);
  }

  // Ignore for now
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
      // TODO Auto-generated method stub
  }

  public void onSensorChanged(SensorEvent event) {
      // this check is unnecessary with only one registered sensor
      // but it's useful to know in case you need to add more sensors
      if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) {
          int orientation = (int) event.values[0];
          rose.setDirection(orientation);
      }
  }
}

.

Modifica: aggiunta Verifica per determinare il tipo di sensore