utils.java

主要用于基站定位的java实现

/*
 *
 */
package com.sonyericsson.example;

import java.util.Date;
import javax.microedition.location.Location;
import javax.microedition.location.LocationProvider;
import javax.microedition.location.QualifiedCoordinates;

class Utils {

  public static String getStateString(final int locationProviderState) {
    String str;
    switch (locationProviderState) {
      case LocationProvider.AVAILABLE:
        str = "AVAILABLE";
        break;
      case LocationProvider.TEMPORARILY_UNAVAILABLE:
        str = "TEMPORARILY_UNAVAILABLE";
        break;
      case LocationProvider.OUT_OF_SERVICE:
        str = "OUT_OF_SERVICE";
        break;
      default:
        throw new IllegalArgumentException("Error : unknown state");
    }
    return str;
  }

  public static String locationToString(final Location l) {
    if (l == null) {
      return "location == null!";
    }

    QualifiedCoordinates q = l.getQualifiedCoordinates();
    if (q == null) {
      return "QualifiedCoordinates == null";
    }

    final StringBuffer sb = new StringBuffer(32);

    sb.append("Position: (lon, lat, alt, spd):\n");

    sb.append(q.getLatitude());
    sb.append(", ");
    sb.append(q.getLongitude());
    sb.append(", ");
    sb.append(q.getAltitude());
    sb.append(", ");
    sb.append(l.getSpeed());
    sb.append("m/s");
    sb.append("\n");
    sb.append(new Date(l.getTimestamp()).toString());

    return new String(sb);
  }
}