2638264600 的个人博客

原理：通过手机读取附近的手机信号基站id ，然后查询google公开的基站数据库获取经纬度。

实现：
通过TelephonyManager 获取lac:mcc:mnc:cell-id （请参考sdk doc文档中TelephonyManager api介绍）
发送到**http://www.google.com/loc/json** 查询

如果不知道lac， mcc，mnc，cell-id ，请Google
google location api 详细 地址http://code.google.com/p/gears/wiki/GeolocationAPI

代码是以前写的简单的例子，（其中函数getNeighboringCellInfo（）在android1.5之下是有问题的，返回为空，后者返回无效数据）

1. package com.test;
3. import java.io.BufferedReader;
4. import java.io.IOException;
5. import java.io.InputStreamReader;
6. import java.io.StringWriter;
7. import java.io.UnsupportedEncodingException;
8. import java.util.List;
10. import org.apache.http.HttpEntity;
11. import org.apache.http.HttpResponse;
12. import org.apache.http.client.ClientProtocolException;
13. import org.apache.http.client.methods.HttpPost;
14. import org.apache.http.entity.StringEntity;
15. import org.apache.http.impl.client.DefaultHttpClient;
16. import org.json.JSONArray;
17. import org.json.JSONException;
18. import org.json.JSONObject;
20. import android.app.Activity;
21. import android.app.ProgressDialog;
22. import android.content.Context;
23. import android.content.Intent;
24. import android.net.Uri;
25. import android.os.Bundle;
26. import android.os.Handler;
27. import android.os.Message;
28. import android.telephony.CellLocation;
29. import android.telephony.NeighboringCellInfo;
30. import android.telephony.PhoneStateListener;
31. import android.telephony.TelephonyManager;
32. import android.telephony.gsm.GsmCellLocation;
33. import android.util.Log;
34. import android.view.View;
35. import android.view.View.OnClickListener;
36. import android.widget.Button;
37. import android.widget.EditText;
38. import android.widget.TextView;
40. public class LocationMe extends Activity implements OnClickListener {

/** Called when the activity is first created. */

42. ```
TelephonyManager manager;

TextView tv,loc;

44. ```
int mcc, mnc, lac[] , ci[];

String mac;

46. ```
EditText mcc_text, mnc_text, lac_text, ci_text, mac_text;

Button find,showinmap,update;

48. ```
int count ;

ProgressDialog mProgressDialog;

50. ```
PhoneStateListener  listener;

Handler mHandler = new Handler(){

53. ```
@Override

public void handleMessage(Message msg) {

55. ```
if(msg.what==100){

mProgressDialog.dismiss();

57. ```
lac_text.setText(lac[0]+","+lac[1]);//+","+lac[2]);

ci_text.setText(ci[0]+","+ci[1]);//+","+ci[2]);

59. ```
}

if(msg.what==101){

61. ```
tv.setText(result_location);

loc.setText( la + "-" + lo);

63. ```
showinmap.setEnabled(true);

mProgressDialog.dismiss();

65. ```
}

if(msg.what==102){

67. ```
mProgressDialog.dismiss();

}

69. ```
}

};

71. ```
@Override

public void onCreate(Bundle savedInstanceState) {

73. ```
super.onCreate(savedInstanceState);

setContentView(R.layout.main);

75. ```
tv = (TextView) findViewById(R.id.tv);

loc = (TextView) findViewById(R.id.location);

77. ```
mcc_text = (EditText) findViewById(R.id.mcc);

mnc_text = (EditText) findViewById(R.id.mnc);

79. ```
lac_text = (EditText) findViewById(R.id.lac);

ci_text = (EditText) findViewById(R.id.ci);

81. ```
mac_text= (EditText) findViewById(R.id.mac);

find = (Button) findViewById(R.id.find_btn);

83. ```
showinmap = (Button) findViewById(R.id.show_in_map);

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

85. ```
update= (Button) findViewById(R.id.update);

find.setOnClickListener(this);

88. ```
update.setOnClickListener(this);

showinmap.setOnClickListener(this);

90. 
91. ```
ci = new int[10];

lac = new int[10];

93. ```
mProgressDialog =new ProgressDialog(this);

mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

95. ```
mProgressDialog.setCancelable(false);

listener = new CellStateListener ();

97. ```
}

void update(){

99. ```
count =0;

100. // CellLocation location = manager.getCellLocation();

Log.e("Location","NetworkCountryIso"+manager.getNetworkCountryIso());//cn

102. ```
mcc = Integer.valueOf(manager.getNetworkOperator().substring(0,3));

mcc_text.setText(String.valueOf(mcc));

104. ```
mnc = Integer.valueOf(manager.getNetworkOperator().substring(3,5));;

mnc_text.setText(String.valueOf(mnc));

106. 
107. 
108. 
109. //                manager.listen(listener, PhoneStateListener.LISTEN_CELL_LOCATION);
110. ```
manager.listen(listener, 0);

GsmCellLocation sm = ((GsmCellLocation)manager.getCellLocation());

112. ```
Log.e("Location", "cid"+sm.getCid()+" lac"+sm.getLac());

lac[0]=sm.getLac();

114. //                mProgressDialog.setMessage("Updating...(0/3)");
115. //                mProgressDialog.show();
116. ```
List<NeighboringCellInfo> list = manager.getNeighboringCellInfo();

count = list.size();

119. ```
Log.e("Location","neighbors "+count);

NeighboringCellInfo info;

121. ```
loc.setText("");

ci_text.setText("");

123. ```
for(int i =0; i<count;i++){

info = list.get(i);

125. ```
Log.e("Location", info.getCid()+"-"+info.getRssi()+" "+info.toString());

lac[i]=lac[0];

127. ```
ci[i]=info.getCid()-415500000;

ci_text.setText(ci_text.getText().toString()+","+ci[i]);

129. ```
loc.setText(loc.getText()+" "+info.getCid());

}

131. ```
}

void findme() {

133. ```
mProgressDialog.setMessage("Finding...");

mProgressDialog.show();

135. ```
Thread thread = new Thread(){

public void run(){

137. ```
try {

DefaultHttpClient client = new DefaultHttpClient();

139. 
140. ```
HttpPost post = new HttpPost("[http://www.google.com/loc/json](http://www.google.com/loc/json)");//[http://www.google.com/glm/mmap](http://www.google.com/glm/mmap)");//

JSONObject holder = new JSONObject();

142. 
143. ```
holder.put("version", "1.1.0");

144. // holder.put("host", "maps.google.com");
145. // holder.put("home_mobile_country_code", mcc);
146. // holder.put("home_mobile_network_code", mnc);
147. // holder.put("radio_type", "gsm");
148. // holder.put("carrier", "Vodafone");

holder.put("request_address", true);

150. ```
holder.put("address_language", "en-us");

JSONObject data ;// = new JSONObject();

153. //                                         data.put("latitude", 31.244506);
154. //                                         data.put("longitude", 121.591095);
155. //                                         holder.put("location",data);
156. 
157. ```
JSONArray array = new JSONArray();

for(int i =0;i<(count<2?count:2);i++){

159. ```
data = new JSONObject();

data.put("cell_id", ci[i]); // 9457, 8321,8243

161. ```
data.put("location_area_code", lac[i]);// 28602

data.put("mobile_country_code", mcc);// 208

163. ```
data.put("mobile_network_code", mnc);// 0

data.put("age", 0);

165. //                                                data.put("signal_strength", -60);
166. //                                                data.put("timing_advance", 5555);
167. 
168. 
169. ```
array.put(data);

}

171. ```
holder.put("cell_towers", array);

////////////////////////WIFI//////////////////////////////////////

174. //                                        WifiManager wm = (WifiManager)getSystemService(Context.WIFI_SERVICE);
175. //                                        WifiInfo info = wm.getConnectionInfo();
176. //                                        String mac = info.getMacAddress();
177. //                                        Log.e("LocationMe","mac:"+mac);
178. //                                        data = new JSONObject();
179. //                                        data.put("mac_address", mac);
180. //                                        data.put("signal_strength", 8);
181. //                                        data.put("age", 0);
182. //                                        array = new JSONArray();
183. //                                        array.put(data);
184. ```
//holder.put("wifi_towers        ", array);

////////////////////////////////////

186. 
187. 
188. 
189. 
190. ```
StringEntity se = new StringEntity(holder.toString());

Log.e("Location send",holder.toString());

192. ```
post.setEntity(se);

HttpResponse resp = client.execute(post);

194. 
195. ```
HttpEntity entity = resp.getEntity();

BufferedReader br = new BufferedReader(new InputStreamReader(entity

198. ```
.getContent()));

StringBuffer sb = new StringBuffer();

200. ```
String result = br.readLine();

while (result != null) {

202. ```
Log.e("Locaiton reseive", result);

sb.append(result);

204. ```
result = br.readLine();

}

206. ```
result_location = sb.toString();

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

210. ```
data = (JSONObject) data.get("location");

la = (Double) data.get("latitude");

212. ```
lo = (Double) data.get("longitude");

mHandler.sendEmptyMessage(101);

214. ```
} catch (ClientProtocolException e) {

e.printStackTrace();

216. ```
mHandler.sendEmptyMessage(102);

} catch (IOException e) {

218. ```
e.printStackTrace();

mHandler.sendEmptyMessage(102);

220. ```
} catch (JSONException e) {

e.printStackTrace();

222. //                                        loc.setText("");
223. //                                        showinmap.setEnabled(false);
224. ```
mHandler.sendEmptyMessage(102);

}

226. ```
}

};

228. ```
thread.start();

}

231. 
232. 
233. ```
String result_location;

double la,lo;

235. ```
@Override

public void onClick(View arg0) {

237. ```
switch(arg0.getId()){

case R.id.find_btn:{

239. ```
findme();

break;

241. ```
}

case R.id.show_in_map:{

243. ```
Uri mapUri = Uri.parse("geo:"+la+","+lo+"?z=12&cbp=1");

startActivity(new Intent(Intent.ACTION_VIEW, mapUri));

245. ```
break;

}

247. ```
case R.id.update:{

update();

249. ```
break;

}

251. 
252. ```
}

}

255. ```
class CellStateListener extends PhoneStateListener{

public void onCellLocationChanged(CellLocation location){

257. ```
GsmCellLocation gsmL = (GsmCellLocation) location;

if(count <2){

259. ```
ci[count] = gsmL.getCid();

lac[count] = gsmL.getLac();

261. ```
count++;

mProgressDialog.setMessage("Updating...("+count+"/3)");

263. ```
gsmL.requestLocationUpdate();

if(count ==2){

265. ```
manager.listen(this, 0);

mHandler.sendEmptyMessage(100);

267. ```
}

}

269. 
270. 
271. ```
}

}

273. }
274. 
275. /*
276. Gears Request
277. 
278. 
279. {
280. "version": "1.1.0",
281. "host": "maps.google.com",
282. "access_token": "2:k7j3G6LaL6u_lafw:4iXOeOpTh1glSXe",
283. "home_mobile_country_code": 310,
284. "home_mobile_network_code": 410,
285. "radio_type": "gsm",
286. "carrier": "Vodafone",
287. "request_address": true,
288. "address_language": "en_GB",
289. "location": {
290. ```
"latitude": 51.0,

"longitude": -0.1

292. },
293. "cell_towers": [
294. ```
{

"cell_id": 42,

296. ```
"location_area_code": 415,

"mobile_country_code": 310,

298. ```
"mobile_network_code": 410,

"age": 0,

300. ```
"signal_strength": -60,

"timing_advance": 5555

302. ```
},

{

304. ```
"cell_id": 88,

"location_area_code": 415,

306. ```
"mobile_country_code": 310,

"mobile_network_code": 580,

308. ```
"age": 0,

"signal_strength": -70,

310. ```
"timing_advance": 7777

}

312. ],
313. "wifi_towers": [
314. ```
{

"mac_address": "01-23-45-67-89-ab",

316. ```
"signal_strength": 8,

"age": 0

318. ```
},

{

320. ```
"mac_address": "01-23-45-67-89-ac",

"signal_strength": 4,

322. ```
"age": 0

}

324. ]
325. }
326. 
327. 
328. * responce
329. {
330. "location": {
331. ```
"latitude": 51.0,

"longitude": -0.1,

333. ```
"altitude": 30.1,

"accuracy": 1200.4,

335. ```
"altitude_accuracy": 10.6,

"address": {

337. ```
"street_number": "100",

"street": "Amphibian Walkway",

339. ```
"postal_code": "94043",

"city": "Mountain View",

341. ```
"county": "Mountain View County",

"region": "California",

343. ```
"country": "United States of America",

"country_code": "US"

345. ```
}

346. },
347. "access_token": "2:k7j3G6LaL6u_lafw:4iXOeOpTh1glSXe"
348. }
350. 08-03 16:48:08.393: ERROR/Location(2350): NetworkCountryIsocn
351. 08-03 16:48:08.423: ERROR/Location(2350): cid9457 lac6340
352. 08-03 16:48:08.443: ERROR/Location(2350): neighbors 5
353. 08-03 16:48:08.453: ERROR/Location(2350): 415506483-9 [18c42033 at 9]
354. 08-03 16:48:08.463: ERROR/Location(2350): 415506691-9 [18c42103 at 9]
355. 08-03 16:48:08.463: ERROR/Location(2350): 415506529-7 [18c42061 at 7]
356. 08-03 16:48:08.473: ERROR/Location(2350): 415531363-11 [18c48163 at 11]
357. 08-03 16:48:08.483: ERROR/Location(2350): 415506531-6 [18c42063 at 6]
361. */