Android Sensor Hand Wave Detection

Question

Ich versuche, einen Sensor zu implementieren, der eine Handwelle erkennen kann. Ich habe ein Beispiel gefunden, das Handschweben ausführen kann, aber nicht Handwelle.

Der folgende Code I verwendet wird, ist von How to controlandroid proximity sensor?

public class AndroidProximitySensorActivity extends Activity { 

TextView ProximitySensor, ProximityMax, ProximityReading; 

SensorManager mySensorManager; 
Sensor myProximitySensor; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    ProximitySensor = (TextView)findViewById(R.id.proximitySensor); 
    ProximityMax = (TextView)findViewById(R.id.proximityMax); 
    ProximityReading = (TextView)findViewById(R.id.proximityReading); 

    mySensorManager = (SensorManager)getSystemService(
     Context.SENSOR_SERVICE); 
    myProximitySensor = mySensorManager.getDefaultSensor(
     Sensor.TYPE_PROXIMITY); 

    if (myProximitySensor == null){ 
    ProximitySensor.setText("No Proximity Sensor!"); 
    }else{ 
    ProximitySensor.setText(myProximitySensor.getName()); 
    ProximityMax.setText("Maximum Range: " 
     + String.valueOf(myProximitySensor.getMaximumRange())); 
    mySensorManager.registerListener(proximitySensorEventListener, 
     myProximitySensor, 
     SensorManager.SENSOR_DELAY_NORMAL); 
    } 
} 

SensorEventListener proximitySensorEventListener 
= new SensorEventListener(){ 

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

} 

@Override 
public void onSensorChanged(SensorEvent event) { 
// TODO Auto-generated method stub 

if(event.sensor.getType()==Sensor.TYPE_PROXIMITY){ 
ProximityReading.setText("Proximity Sensor Reading:" 
    + String.valueOf(event.values[0])); 
} 
} 
    }; 
} 

In dem obigen Code, wenn die event.values ​​[0] = 0, bedeutet dies meine Hand schweben am Sensor ist. Ich brauche jedoch meinen Sensor, um eine Handwelle zu erkennen. Wie mache ich es? Vielen Dank.

Answer 1

Bitte versuchen Sie diesen Code:

private SensorManager sensorManager; 
    private Sensor proximitySensor; 

    private final int WAVE_TIME = 2000; 
    private final int WAVE_NEEDED_MOVEMENTS = 3; 
    private long lastWaveTime = 0; 
    private float lastSensorValue; 
    private float maxSensorValue; 
    private float numOfMovements = 0; 


     public void onCreate() { 
       super.onCreate(); 

       sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE); 
       proximitySensor = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); 
       sensorManager.registerListener(proximitySensorEventListener, proximitySensor,SensorManager.SENSOR_DELAY_NORMAL); 
       maxSensorValue = proximitySensor.getMaximumRange(); 
     } 

     @Override 
     public void onSensorChanged(SensorEvent event) { 

      if(lastWaveTime + WAVE_TIME > System.currentTimeMillis()) { 
       System.out.println("Reset timing..."); 
       lastWaveTime = System.currentTimeMillis(); 
       numOfMovements = 0; 
       lastSensorValue = event.values[0]; 
      } else if((event.values[0] != maxSensorValue && lastSensorValue == maxSensorValue) || (event.values[0] == maxSensorValue && lastSensorValue != maxSensorValue)){ 
       numOfMovements++; 
       if(numOfMovements == WAVE_NEEDED_MOVEMENTS) { 
        System.out.println("WAVE EVENT"); 
        lastWaveTime = System.currentTimeMillis(); 
        numOfMovements = 0; 
       } 
      } 

     }