如何根据基站获取移动端地理位置

/**

• 获取基站信息
• @return
• @throws Exception
  */

public SCell getCellInfo() throws Exception{
SCell cell = new SCell();
TelephonyManager mTelNet = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
GsmCellLocation location = (GsmCellLocation) mTelNet.getCellLocation();
if (location == null)
throw new Exception("基站信息为空");
String operator = mTelNet.getNetworkOperator();
int mcc = Integer.parseInt(operator.substring(0, 3));
int mnc = Integer.parseInt(operator.substring(3));
int cid = location.getCid();
int lac = location.getLac();
cell.MCC = mcc;
cell.MNC = mnc;
cell.LAC = lac;
cell.CID = cid;
return cell;
}

/**

• 通过基站信息获取经纬度
• @param cell
• @return
• @throws Exception
  */

private SItude getItude(SCell cell) throws Exception {
SItude itude = new SItude();

HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://www.google.com/loc/json");
try {
JSONObject holder = new JSONObject();
holder.put("version", "1.1.0");
holder.put("host", "maps.google.com");
holder.put("address_language", "zh_CN");
holder.put("request_address", true);
holder.put("radio_type", "gsm");
holder.put("carrier", "HTC");

JSONObject tower = new JSONObject();
tower.put("mobile_country_code", cell.MCC);
tower.put("mobile_network_code", cell.MNC);
tower.put("cell_id", cell.CID);
tower.put("location_area_code", cell.LAC);

JSONArray towerarray = new JSONArray();
towerarray.put(tower);
holder.put("cell_towers", towerarray);

StringEntity query = new StringEntity(holder.toString());
post.setEntity(query);

HttpResponse response = client.execute(post);
HttpEntity entity = response.getEntity();
BufferedReader buffReader = new BufferedReader(
new InputStreamReader(entity.getContent()));
StringBuffer strBuff = new StringBuffer();
String result = null;
while ((result = buffReader.readLine()) != null) {
strBuff.append(result);
}
JSONObject json = new JSONObject(strBuff.toString());
JSONObject subjosn = new JSONObject(json.getString("location"));

itude.latitude = subjosn.getString("latitude");
itude.longitude = subjosn.getString("longitude");

Log.i("Itude", itude.latitude + itude.longitude);

} catch (Exception e) {
Log.e(e.getMessage(), e.toString());
throw new Exception("" + e.getMessage());
} finally {
post.abort();
client = null;
}

return itude;
}

/**

• 通过经纬度到Google map上获取地理位置
• @param itude
• @return
• @throws Exception
  */

private String getLocation(SItude itude) throws Exception {
String resultString = "";
String urlString = String.format(
"http://maps.google.cn/maps/geo?key=abcdefg&q=%s,%s",
itude.latitude, itude.longitude);
Log.i("URL", urlString);
HttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet(urlString);
try {
HttpResponse response = client.execute(get);
HttpEntity entity = response.getEntity();
BufferedReader buffReader = new BufferedReader(
new InputStreamReader(entity.getContent()));
StringBuffer strBuff = new StringBuffer();
String result = null;
while ((result = buffReader.readLine()) != null) {
strBuff.append(result);
}
resultString = strBuff.toString();
if (resultString != null && resultString.length() > 0) {
JSONObject jsonobject = new JSONObject(resultString);
JSONArray jsonArray = new JSONArray(jsonobject.get("Placemark")
.toString());
resultString = "";
for (int i = 0; i < jsonArray.length(); i++) {
resultString = jsonArray.getJSONObject(i).getString(
"address");
}
}
} catch (Exception e) {
throw new Exception("sd:" + e.getMessage());
} finally {
get.abort();
client = null;
}
return resultString;
}

public class SCell {
public int MCC;
public int MNC;
public int LAC;
public int CID;
}

public class SItude {
public String latitude;
public String longitude;
}