Android Open Source - Look Nodo Wifi

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License

The source code is released under:

====================== LOOK! LICENSING TERMS ====================== look! is licensed under the BSD 3-Clause (also known as "BSD New" or "BSD Simplified"), as follows: Copyright (c) 2010-2012, Look...

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Java Source Code

/**
*-----------------------------------------------------------------------------
* Copyright (c) 2012, Look! Development Team
* All rights reserved./*from   w w w .  j  a  v a2s. co  m*/
*
* Distributed under the terms of the BSD Simplified License.
*
* The full license is in the LICENSE file, distributed with this software.
*-----------------------------------------------------------------------------
*/
package es.ucm.look.locationProviderWifi.wifi;

import java.util.ArrayList;

/**
 * Mantains information of an Access Point
 * 
 * @author Jorge Creixell Rojo
 * 
 */
public class NodoWifi implements Comparable<Object> {
  
  /**
   * MAX signal level - MIN signal level
   */
  public static final int MAX_DIF = 100;

  /**
   * MAC address of the access point.
   */
  private String bssid;
  
  /**
   * Signal level of the access point
   */
  private int level;
  
  /**
   * id number of the access point
   */
  private int id;

  /**
   * Parameterized contructor.
   * @param bssid
   *       MAC address of the access point
   * @param level
   *       Signal level
   * @param id
   *       Id nunmber
   */
  public NodoWifi(String bssid, int level, int id) {
    this.bssid = bssid;
    this.level = level;
    this.id = id;
    
  }

  /**
   * Returns MAC address of the access point
   * @return MAC address
   */
  public String getBssid() {
    return bssid;
  }

  /**
   * Returns signal level of the access point
   * @return signal level
   */
  public int getLevel() {
    return level;
  }
  
  /**
   * Returns access point information as a string
   * @return String representing AP information
   */
  public String toString() {
    return ("Nodo: " + bssid + " " + level + " " + id);
  }
  
  
  
  /**
   * Compares the current AP signal with another and returns the similarity level between them.
   * @param signal
   *       Signal level of the other AP.
   * @return Similarity between signals
   */
  //de 1 a 100, grado de similitud en la se?al recibida
  //signal1 en formato de 1 a 35
  public int getSignalSimilarity(int signal) {
    int signal1 = java.lang.Math.abs(level);//WifiManager.calculateSignalLevel(level,35);
    int signal2 = java.lang.Math.abs(signal);//WifiManager.calculateSignalLevel(signal,35);
    
    int dif = java.lang.Math.abs(signal2-signal1);
    int similarity = MAX_DIF-dif;
    
    int result = (Math.round(((similarity/10))));

    return result;
  }

  /**
   * Returns the id number of the access point
   * @return id number
   */
  public int getId() {
    return id;
  }
  
  /**
   * Returns the id number of the access point as a string
   * @return id number as a string
   */
  public String getKey() {
    return (Integer.toString(id));
  }
  
  /**
   * Calculates the average signal of a list of signal values
   * @param l
   *       List of signal levels
   * @return mean of the signal levels
   */
  public static int averageLevel(ArrayList<Integer> l) {
    int sum = 0;
    for (int i =0; i < l.size(); i++) {
      sum += l.get(i);
    }
    return (sum/l.size());
  }
  
  /**
   * Calculates the maximum signal of a list of signal values
   * @param l
   *       List of signal levels
   * @return maximum value
   */
  public static int maxLevel(ArrayList<Integer> l) {
    int max = -100;
    for (int i =0; i < l.size(); i++) {
      if (l.get(i) > max) {
        max = l.get(i);
      }
    }
    return (max);
  }
  
  
  /**
   * Compares two nodes by signal level
   * @param o
   *       Node to compare with the current
   * @return 0 if equals, -1 if current node lower, 1 if current node higher
   */
  @Override
  public int compareTo(Object o) {
    int result = 0;
    NodoWifi nodo = (NodoWifi)o;
    if (nodo.level == this.level)
      result = 0;
    else if (this.level > nodo.level)
      result = 1;
    else
      result = -1;
    
    return result;
    
  }

}

Java Source Code List