Android引路蜂地图开发示例：IP地址查询

IP地址查询，可以根据IP地址查询到该IP所在的地理经纬度坐标，比如下述例子查询IP 地址58.192.32.1，所在经纬度为118.777802,32.061699，为南京大学所在地。

package com.pstreets.gisengine.demo;

import com.mapdigit.gis.DigitalMap;
import com.mapdigit.gis.MapPoint;
import com.mapdigit.gis.geometry.GeoLatLng;
import com.mapdigit.gis.service.IIpAddressGeocodingListener;
import com.mapdigit.gis.service.IpAddressLocation;
import com.pstreets.gisengine.R;
import com.pstreets.gisengine.SharedMapInstance;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

public class MapIpSearch extends Activity implements
  IIpAddressGeocodingListener {

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
 }

 @Override
 public void onStart() {
  super.onStart();
  GeoLatLng center = new GeoLatLng(32.0616667, 118.7777778);
  SharedMapInstance.map.setCenter(center, 15,
    com.mapdigit.gis.raster.MapType.MICROSOFTCHINA);
  SharedMapInstance.map.setIpAddressGeocodingListener(this);

 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  MenuInflater inflater = getMenuInflater();
  inflater.inflate(R.menu.mapgeocoding_menu, menu);
  return true;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  // Handle item selection
  switch (item.getItemId()) {
  case R.id.findaddress:
   SharedMapInstance.map.getIpLocations("58.192.32.1");
   return true;

  default:
   return super.onOptionsItemSelected(item);
  }

 }

 @Override
 public void done(String query, IpAddressLocation result) {
  if (result != null && result.error.length() == 0
    && result.longitude.length() > 0
    && result.longitude.length() > 0) {
   try {

    MapPoint mapPoint = new MapPoint();
    String latLng = "[" + result.longitude + "," + result.latitude
      + ",0]";
    mapPoint.point = DigitalMap.fromStringToLatLng(latLng);
    mapPoint.setName(result.organization);
    mapPoint.setNote(result.city + " " + result.country);
    SharedMapInstance.map.panTo(mapPoint.point);
   } catch (Exception e) {

    result.error = "IP_NOT_FOUND";
   }
  }

 }

 @Override
 public void readProgress(int bytes, int total) {

 }

}

注：目前IP查询结果总是以英文返回，如上述结果详细内容。
ISP：”China Education and Research Network”
Organization: “Nan Jing University”
Country: “CN”
City: “Nanjing”
若想知道该经纬度对应的地名，可以使用地址反编码服务。
你可以输入 127.0.0.1 查询本机地址。