Android Open Source - android-uds Monitored Sensor

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Back to project page android-uds.

License

The source code is released under:

MIT License

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Java Source Code

package org.imazlwifu.uds.model;
//from  w w w  . j  av  a 2  s. com
import java.util.HashMap;
import java.util.Map;

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;

/**
 * Wrapper class for <code>android.hardware.Sensor</code>
 * @author Sascha Eiteneuer
 *
 */
public class MonitoredSensor implements Monitorable, SensorEventListener {
  private SensorManager sensorManager;
  private SensorEvent lastEvent = null;
  
  private Sensor sensor;
  private Map<String, Float> values;

  public MonitoredSensor( Context context, Sensor s ) {
    sensorManager = (SensorManager) context.getSystemService( Context.SENSOR_SERVICE );
    
    this.sensor = s;
    values = new HashMap<String, Float>();
  }
  
  @Override
  public String getName() {
    return sensor.getName();
  }

  /**
   * <p>
   * There might be multiple sensors with the same name.
   * Because some protocols (e.g. HTTP Post parameters) behave like a set,
   * a unique key is formed by the expression:
   * </p >
   * <p><code style="text-indent:4em;">SensorName + '@' + Integer.toHexString( this.hashCode() )</code></p>
   * 
   * @return &lt;key, value&gt;
   */
  @Override
  public Map<String, Float> values() {
    return values;
  }

  @Override
  public void updateData() {
    if( lastEvent != null )
      for( float f : lastEvent.values )
        values.put( sensor.getName() +'@'+ Integer.toHexString( this.hashCode() ), f );
  }

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

  @Override
  public void onSensorChanged(SensorEvent event) {
    lastEvent = event;
  }

  @Override
  public boolean registerListener() {
    return sensorManager.registerListener( this, sensor, SensorManager.SENSOR_DELAY_NORMAL );
  }
  
  @Override
  public void unregisterListener() {
    sensorManager.unregisterListener( this );
  }
}

Java Source Code List