android GSM+CDMA基站定位

在googleAPI里提供了基站信息的获取类TelephonyManager，通过其方法getCellLocation得到CellLocation即可获取到基站相关信息

但CellLocation是个抽象类，所以在具体使用时需要判断接入的网络制式来用其子类CdmaCellLocation或GsmCellLocation 来强转

CdmaCellLocation对应CDMA网，GsmCellLocation对应GSM网

 

三大网络运营商的网络制式对应如下：

移动2G 网 --> GSM

移动3G 网 --> TD-SCDMA

 

电信2G 网 --> CDMA

电信3G 网 --> CDMA2000

 

联通2G 网 --> GSM

联通3G 网 --> WCDMA

 

由此可见移动，联通2G 网都可使用GsmCellLocation

电信2G,3G网则使用CdmaCellLocation

那么移动3G和联通3G又当如何

 

其实经本人亲测，移动3G网也可使用GsmCellLocation，听说是TD-SCDMA衍生于GSM，具体原因咱也不用纠结了，反正能用就是了

而联通的WCDMA据说也可使用GsmCellLocation，那姑且就是这样吧，有条件的童鞋试一试吧。

 

 

对于网络制式的判断调用TelephonyManager.getNetworkType()可有多种情况，如下：

• NETWORK_TYPE_UNKNOWN
• NETWORK_TYPE_GPRS
• NETWORK_TYPE_EDGE
• NETWORK_TYPE_UMTS
• NETWORK_TYPE_HSDPA
• NETWORK_TYPE_HSUPA
• NETWORK_TYPE_HSPA
• NETWORK_TYPE_CDMA
• NETWORK_TYPE_EVDO_0
• NETWORK_TYPE_EVDO_A
• NETWORK_TYPE_EVDO_B
• NETWORK_TYPE_1xRTT
• NETWORK_TYPE_IDEN
• NETWORK_TYPE_LTE
• NETWORK_TYPE_EHRPD

通过对网络类型判断后获取对应基站信息代码片段如下:

 public static ArrayList<CellIDInfo> getCellIDInfo(Context context) throws Exception{

         TelephonyManager manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

         ArrayList<CellIDInfo> CellID = new ArrayList<CellIDInfo>();
         CellIDInfo currentCell = new CellIDInfo();

         int type = manager.getNetworkType();
         Log.d(TAG, "getCellIDInfo-->         NetworkType = " + type);
         int phoneType = manager.getPhoneType();
         Log.d(TAG, "getCellIDInfo-->         phoneType = " + phoneType);

         if (type == TelephonyManager.NETWORK_TYPE_GPRS              // GSM网
                 || type == TelephonyManager.NETWORK_TYPE_EDGE
                 || type == TelephonyManager.NETWORK_TYPE_HSDPA)
         {
             GsmCellLocation gsm = ((GsmCellLocation) manager.getCellLocation());
             if (gsm == null)
             {
                 Log.e(TAG, "GsmCellLocation is null!!!");
                 return null;
             }


             int lac = gsm.getLac();
             String mcc = manager.getNetworkOperator().substring(0, 3);
             String mnc = manager.getNetworkOperator().substring(3, 5);
             int cid = gsm.getCid();

             currentCell.cellId = gsm.getCid();
             currentCell.mobileCountryCode = mcc;
             currentCell.mobileNetworkCode = mnc;
             currentCell.locationAreaCode = lac;

             currentCell.radioType = "gsm";

             CellID.add(currentCell);

             // 获得邻近基站信息
             List<NeighboringCellInfo> list = manager.getNeighboringCellInfo();
             int size = list.size();
             for (int i = 0; i < size; i++) {

                 CellIDInfo info = new CellIDInfo();
                 info.cellId = list.get(i).getCid();
                 info.mobileCountryCode = mcc;
                 info.mobileNetworkCode = mnc;
                 info.locationAreaCode = lac;

                 CellID.add(info);
             }

         }else if (type == TelephonyManager.NETWORK_TYPE_CDMA        // 电信cdma网
                 || type == TelephonyManager.NETWORK_TYPE_1xRTT
                 || type == TelephonyManager.NETWORK_TYPE_EVDO_0
                 || type == TelephonyManager.NETWORK_TYPE_EVDO_A)
         {

             CdmaCellLocation cdma = (CdmaCellLocation) manager.getCellLocation();
             if (cdma == null)
             {
                 Log.e(TAG, "CdmaCellLocation is null!!!");
                 return null;
             }

             int lac = cdma.getNetworkId();
             String mcc = manager.getNetworkOperator().substring(0, 3);
             String mnc = String.valueOf(cdma.getSystemId());
             int cid = cdma.getBaseStationId();

             currentCell.cellId = cid;
             currentCell.mobileCountryCode = mcc;
             currentCell.mobileNetworkCode = mnc;
             currentCell.locationAreaCode = lac;

             currentCell.radioType = "cdma";

             CellID.add(currentCell);

             // 获得邻近基站信息
             List<NeighboringCellInfo> list = manager.getNeighboringCellInfo();
             int size = list.size();
             for (int i = 0; i < size; i++) {

                 CellIDInfo info = new CellIDInfo();
                 info.cellId = list.get(i).getCid();
                 info.mobileCountryCode = mcc;
                 info.mobileNetworkCode = mnc;
                 info.locationAreaCode = lac;

                 CellID.add(info);
             }
         }

         return CellID;

     }

从GOOGLE的API文档里总共有14钟网络类型，这里只罗列了其中7种，其他的主要是本人也不太清楚其对应到的网络制式是怎样的

所以部分童鞋的SIM卡网络制式不在这7种之内，自己根据实际情况看看它是归类于GSM还是CDMA在添进去就可以了


网络上多数教程是讲GSM网获取基站的，而忽略了C网的基站
这里我们可以比较一下GSM 和 CDMA 在获取基站信息时的不同之处



GSM:

int lac = gsm.getLac();
String mcc = manager.getNetworkOperator().substring(0, 3);
String mnc = manager.getNetworkOperator().substring(3, 5);
int cid = gsm.getCid();



CDMA:

int lac = cdma.getNetworkId();
String mcc = manager.getNetworkOperator().substring(0, 3);
String mnc = String.valueOf(cdma.getSystemId());
int cid = cdma.getBaseStationId();



在获取区域码LAC时GSM使用的是GsmCellLocation.getLac(),CDMA则用CdmaCellLocation.getNetworkId()来代替

在获取基站ID时GSM使用的是GsmCellLocation.getCid(),CDMA则用CdmaCellLocation.getBaseStationId()来代替





前面获取到的都是单个基站的信息，后面再获取周围邻近基站信息以辅助通过基站定位的精准性

TelephonyManager.getNeighboringCellInfo()，将其也放入基站信息LIST表中





最后通过google提供的gear接口获取经纬度，代码如下：

 public static Location callGear(List<CellIDInfo> cellID) {
             if (cellID == null || cellID.size() == 0)
                     return null;

             DefaultHttpClient client = new DefaultHttpClient();
                 HttpPost post = new HttpPost("http://www.google.com/loc/json");
                 JSONObject holder = new JSONObject();

                 try {
                         holder.put("version", "1.1.0");
                         holder.put("host", "maps.google.com");
                         holder.put("home_mobile_country_code", cellID.get(0).mobileCountryCode);
                         holder.put("home_mobile_network_code", cellID.get(0).mobileNetworkCode);
                         holder.put("radio_type", cellID.get(0).radioType);
                         holder.put("request_address", true);
                         if ("460".equals(cellID.get(0).mobileCountryCode))
                                 holder.put("address_language", "zh_CN");
                         else
                                 holder.put("address_language", "en_US");

                         JSONObject data,current_data;

                         JSONArray array = new JSONArray();

                         current_data = new JSONObject();
                         current_data.put("cell_id", cellID.get(0).cellId);
                         current_data.put("location_area_code", cellID.get(0).locationAreaCode);
                         current_data.put("mobile_country_code", cellID.get(0).mobileCountryCode);
                         current_data.put("mobile_network_code", cellID.get(0).mobileNetworkCode);
                         current_data.put("age", 0);
                         current_data.put("signal_strength", -60);
                         current_data.put("timing_advance", 5555);
                         array.put(current_data);

                         if (cellID.size() > 2) {
                             for (int i = 1; i < cellID.size(); i++) {
                              data = new JSONObject();
                              data.put("cell_id", cellID.get(i).cellId);
                              data.put("location_area_code", cellID.get(i).locationAreaCode);
                              data.put("mobile_country_code", cellID.get(i).mobileCountryCode);
                              data.put("mobile_network_code", cellID.get(i).mobileNetworkCode);
                              data.put("age", 0);
                              array.put(data);
                             }
                            }




                         holder.put("cell_towers", array);

                         StringEntity se = new StringEntity(holder.toString());
                         Log.e("Location send", holder.toString());
                         post.setEntity(se);
                         HttpResponse resp = client.execute(post);

                         HttpEntity entity = resp.getEntity();

                         BufferedReader br = new BufferedReader(
                                         new InputStreamReader(entity.getContent()));
                         StringBuffer sb = new StringBuffer();
                         String result = br.readLine();
                         while (result != null) {
                                 Log.e("Locaiton reseive-->", result);
                                 sb.append(result);
                                 result = br.readLine();
                         }

                         data = new JSONObject(sb.toString());

                         data = (JSONObject) data.get("location");

                         Location loc = new Location(LocationManager.NETWORK_PROVIDER);
                         loc.setLatitude((Double) data.get("latitude"));
                         loc.setLongitude((Double) data.get("longitude"));
                         loc.setAccuracy(Float.parseFloat(data.get("accuracy").toString()));
                         loc.setTime( System.currentTimeMillis());//AppUtil.getUTCTime());
                         return loc;
                 } catch (JSONException e) {
                         e.printStackTrace();
                         return null;
                 } catch (UnsupportedEncodingException e) {
                         e.printStackTrace();
                 } catch (ClientProtocolException e) {
                         e.printStackTrace();
                 } catch (IOException e) {
                         e.printStackTrace();
                 }

                 return null;
         }

大家注意看这行holder.put("radio_type", cellID.get(0).radioType);

GSM就用"gsm",CDMA就用"cdma"

这个千万别搞混了，不然就获取不到信息了

值得一提的是C网获取基站再定位那偏差不是一般的大，是恨大，将近1千米了，大概是C网基站较少的缘故吧

 

最后通过经纬度获取地理位置信息，代码如下：

 public static  String getAddress(Location itude) throws Exception {
         String resultString = "";

         /** 这里采用get方法，直接将参数加到URL上 */
         String urlString = String.format("http://maps.google.cn/maps/geo?key=abcdefg&q=%s,%s", itude.getLatitude(), itude.getLongitude());
         Log.i("URL", urlString);

         /** 新建HttpClient */
         HttpClient client = new DefaultHttpClient();
         /** 采用GET方法 */
         HttpGet get = new HttpGet(urlString);
         try {
             /** 发起GET请求并获得返回数据 */
             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();

             Log.e("resultAdress--->", resultString);

             /** 解析JSON数据，获得物理地址 */
             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("获取物理位置出现错误:" + e.getMessage());
         } finally {
             get.abort();
             client = null;
         }

         return resultString;
     }

在获取地理位置的这个location事实上应该传入纠偏后的location，本文暂不做此处理，所以得到的地理信息位置是偶偏差的，大家注意

最后附上截图：

 

工程下载链接：http://download.csdn.net/detail/geniuseoe2012/4340303