Android 基于GeolocationAPI的基站定位

Android 基于GeolocationAPI的基站定位

api 地址为 http://code.google.com/p/gears/wiki/GeolocationAPI

发送的格式：

                              {
 "location": {
   "latitude": 51.0,
   "longitude": -0.1,
   "altitude": 30.1,
   "accuracy": 1200.1,
   "altitude_accuracy": 10.1,
   "address": {
     "street_number": "100",
     "street": "Amphibian Walkway",
     "postal_code": "94043",
     "city": "Mountain View",
     "county": "Mountain View County",
     "region": "California",
     "country": "United States of America",
     "country_code": "US"
   }
 }
}

返回的格式：              {
 "location": {
   "latitude": 51.0,
   "longitude": -0.1,
   "altitude": 30.1,
   "accuracy": 1200.1,
   "altitude_accuracy": 10.1,
   "address": {
     "street_number": "100",
     "street": "Amphibian Walkway",
     "postal_code": "94043",
     "city": "Mountain View",
     "county": "Mountain View County",
     "region": "California",
     "country": "United States of America",
     "country_code": "US"
   }
 }
}

  得到LAC 和CellId后，其它的就是json解析了;

1.   
2. import java.io.BufferedReader;  
3. import java.io.InputStream;  
4. import java.io.InputStreamReader;  
5. import java.net.URL;  
6. import java.util.Date;  
7.   
8. import org.apache.http.HttpEntity;  
9. import org.apache.http.HttpResponse;  
10. import org.apache.http.client.methods.HttpPost;  
11. import org.apache.http.entity.StringEntity;  
12. import org.apache.http.impl.client.DefaultHttpClient;  
13. import org.json.JSONArray;  
14. import org.json.JSONObject;  
15.   
16.   
17. import Android.app.Activity;  
18. import android.content.Context;  
19. import android.os.Bundle;  
20. import android.telephony.TelephonyManager;  
21. import android.telephony.gsm.GsmCellLocation;  
22. import android.view.View;  
23. import android.widget.Button;  
24. import android.widget.TextView;  
25.   
26. public class LocationStation extends Activity {  
27.     TextView mTextView;  
28.     Button mButton;  
29.     TelephonyManager tm;  
30.   
31.     /** Called when the activity is first created. */  
32.     @Override  
33.     public void onCreate(Bundle savedInstanceState) {  
34.         super.onCreate(savedInstanceState);  
35.         setContentView(R.layout.main);  
36.   
37.         mTextView = (TextView) findViewById(R.id.textView);  
38.         mButton = (Button) findViewById(R.id.Button);  
39.         tm = (TelephonyManager) this  
40.                 .getSystemService(Context.TELEPHONY_SERVICE);  
41.   
42.         mButton.setOnClickListener(new Button.OnClickListener() {  
43.   
44.             @Override  
45.             public void onClick(View v) {  
46.                 // TODO Auto-generated method stub   
47.                 GsmCellLocation gcl = (GsmCellLocation) tm.getCellLocation();  
48.                 int cid = gcl.getCid();   
49.                 int lac = gcl.getLac();  
50.                 System.out.println("operator"+tm.getNetworkOperator()); //中国移动43600   
51.                 int mcc = Integer.valueOf(tm.getNetworkOperator().substring(0,  
52.                         3));  
53.                 int mnc = Integer.valueOf(tm.getNetworkOperator().substring(3,  
54.                         5));  
55.                 /* 
56.                 * 发送的格式：{ 
57.                             "version": "1.1.0" , 
58.                             "host": "maps.google.com", 
59.                             "access_token": "2:k7j3G6LaL6u_lafw:4iXOeOpTh1glSXe", 
60.                             "home_mobile_country_code": 460, 
61.                             "home_mobile_network_code":0, 
62.                             "address_language": "zh_CN", 
63.                             "radio_type": "gsm", 
64.                             "request_address": true , 
65.                             "cell_towers":[ 
66.                             { 
67.                             "cell_id":36526, 
68.                             "location_area_code":14556, 
69.                             "mobile_country_code":460, 
70.                             "mobile_network_code":0, 
71.                             "timing_advance":5555 
72.                             } 
73.                             ] 
74.                             } 
75.                  */  
76.                 try {  
77.                     // 组装JSON查询字符串   
78.                     JSONObject holder = new JSONObject();  
79.                     holder.put("version", "1.1.0");  
80.                     holder.put("host", "maps.google.com");  
81.                     holder.put("address_language", "zh_CN");  
82.                     holder.put("request_address", true);  
83.   
84.                     JSONArray array = new JSONArray();  
85.                     JSONObject data = new JSONObject();  
86.                     data.put("cell_id", cid); // 25070   
87.                     data.put("location_area_code", lac);// 4474   
88.                     data.put("mobile_country_code", mcc);// 460   
89.                     data.put("mobile_network_code", mnc);// 0   
90.                     array.put(data);  
91.                     holder.put("cell_towers", array);  
92.   
93.                     // 创建连接，发送请求并接受回应   
94.                     DefaultHttpClient client = new DefaultHttpClient();  
95.   
96.                     HttpPost post = new HttpPost(  
97.                             "http://www.google.com/loc/json");  
98.   
99.                     StringEntity se = new StringEntity(holder.toString());  
100.   
101.                     post.setEntity(se);  
102.                     HttpResponse resp = client.execute(post);  
103.   
104.                     HttpEntity entity = resp.getEntity();  
105.   
106.                     BufferedReader br = new BufferedReader(  
107.                             new InputStreamReader(entity.getContent()));  
108.                     StringBuffer sb = new StringBuffer();  
109.                     String result = br.readLine();  
110.   
111.                     while (result != null) {  
112.   
113.                         sb.append(result);  
114.                         result = br.readLine();  
115.                     }  
116.                     /* 
117.                      * 返回格式：   { 
118.                           "location": { 
119.                             "latitude": 51.0, 
120.                             "longitude": -0.1, 
121.                             "altitude": 30.1, 
122.                             "accuracy": 1200.1, 
123.                             "altitude_accuracy": 10.1, 
124.                             "address": { 
125.                               "street_number": "100", 
126.                               "street": "Amphibian Walkway", 
127.                               "postal_code": "94043", 
128.                               "city": "Mountain View", 
129.                               "county": "Mountain View County", 
130.                               "region": "California", 
131.                               "country": "United States of America", 
132.                               "country_code": "US" 
133.                             } 
134.                           } 
135.                         } 
136.                      */  
137.                     JSONObject jsonObject = new JSONObject(sb.toString());  
138.   
139.                     JSONObject jsonObject1 = new JSONObject(jsonObject  
140.                             .getString("location"));  
141.   
142.                     getAddress(jsonObject1.getString("latitude"), jsonObject1  
143.                             .getString("longitude"));  
144.   
145.                     //mTextView.setText(sb.toString());   
146.                 } catch (Exception e) {  
147.                     // TODO: handle exception   
148.                 }  
149.   
150.             }  
151.   
152.         });  
153.     }  
154.   
155.     void getAddress(String lat, String lag) {  
156.         try {  
157.   
158.             URL url = new URL("http://maps.google.cn/maps/geo?key=abcdefg&q="  
159.                     + lat + "," + lag);  
160.             InputStream inputStream = url.openConnection().getInputStream();  
161.             InputStreamReader inputReader = new InputStreamReader(inputStream,  
162.                     "utf-8");  
163.             BufferedReader bufReader = new BufferedReader(inputReader);  
164.   
165.             String line = "", lines = "";  
166.   
167.             while ((line = bufReader.readLine()) != null) {  
168.                 lines += line;  
169.             }  
170.             if (!lines.equals("")) {  
171.   
172.                 JSONObject jsonobject = new JSONObject(lines);  
173.                 JSONArray jsonArray = new JSONArray(jsonobject.get("Placemark")  
174.                         .toString());  
175.                 for (int i = 0; i < jsonArray.length(); i++) {  
176.   
177.                     mTextView.setText( jsonArray.getJSONObject(i).getString("address"));  
178.                               
179.                 }  
180.   
181.             }  
182.   
183.         } catch (Exception e) {  
184.             ;  
185.         }  
186.   
187.     }  
188. }