Android基站定位原理及实现代码

代码如下:

import java.io.BufferedReader;
import java.io.InputStreamReader;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

public class Test extends Activity {

Context context=this;
LinearLayout mainView=null;
Button button=null;
TextView tv=null;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setTitle("基站+联网+google数据库定位");
mainView=new LinearLayout(this);
mainView.setOrientation(LinearLayout.VERTICAL);
button=new Button(this);
button.setText("定位测试");
button.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
(new HttpThread(context)).start();
}
});
mainView.addView(button,new LinearLayout.LayoutParams(-2,-2));
tv=new TextView(this);
tv.setText("Hello！\n");
mainView.addView(tv);
setContentView(mainView);
}

class HttpThread extends Thread{

TelephonyManager tm=null;
GsmCellLocation gcl=null;
int cid=0;
int lac=0;
int mcc = 0;
int mnc =0;
StringBuffer sb=null;

Handler handler=new Handler(){
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
tv.append(sb.toString());
break;
}
super.handleMessage(msg);
}
};

HttpThread(Context context){
tm=(TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
gcl=(GsmCellLocation) tm.getCellLocation();
cid=gcl.getCid();
lac=gcl.getLac();
mcc = Integer.valueOf(tm.getNetworkOperator().substring(0,3));
mnc = Integer.valueOf(tm.getNetworkOperator().substring(3,5));

sb=new StringBuffer();
sb.append("cid:"+cid + "\n");
sb.append("lac:"+lac + "\n");
sb.append("mcc:"+mcc + "\n");
sb.append("mnc:"+mnc + "\n");
}

public void run(){
try {
JSONObject jObject = new JSONObject();
jObject.put("version", "1.1.0");
jObject.put("host", "maps.google.com");
jObject.put("request_address", true);
if (mcc == 460) {
jObject.put("address_language", "zh_CN");
} else {
jObject.put("address_language", "en_US");
}
JSONArray jArray = new JSONArray();
JSONObject jData = new JSONObject();
jData.put("cell_id", cid);
jData.put("location_area_code", lac);
jData.put("mobile_country_code", mcc);
jData.put("mobile_network_code", mnc);
jArray.put(jData);
jObject.put("cell_towers", jArray);

DefaultHttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://www.google.com/loc/json");
StringEntity se = new StringEntity(jObject.toString());
post.setEntity(se);
HttpResponse resp = client.execute(post);
BufferedReader br = null;
if (resp.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
sb.append("联网成功\n");
br = new BufferedReader(new InputStreamReader(resp.getEntity().getContent()));
}else{
sb.append("联网获取数据失败!\n");
}

String result = br.readLine();
while (result != null) {
sb.append(result);
result = br.readLine();
}
}catch(Exception ex){
sb.append(ex.getMessage());
}
Message msg=new Message();
msg.what=1;
handler.sendMessage(msg);
}
}
}

所需权限


代码如下:

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
< uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>