Android經過Google實現基站定位

利用Google接口實現基站定位 android開發教程

1. [代碼]LocationAct.java    

package lab.sodino.location;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
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.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

/**
* Google定位的實現.<br/>
* Geolocation的詳細信息請參見：<br/>
* <a
* href="http://code.google.com/apis/gears/geolocation_network_protocol.html">
* http://code.google.com/apis/gears/geolocation_network_protocol.html</a>
*/
public class LocationAct extends Activity {
private TextView txtInfo;
public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  Button btn = (Button) findViewById(R.id.btnStart);
  txtInfo = (TextView) findViewById(R.id.txtInfo);
  btn.setOnClickListener(new Button.OnClickListener() {
   public void onClick(View view) {
    getLocation();
   }
  });
}
private void getLocation() {
  TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
  GsmCellLocation gsmCell = (GsmCellLocation) tm.getCellLocation();
  int cid = gsmCell.getCid();
  int lac = gsmCell.getLac();
  String netOperator = tm.getNetworkOperator();
  int mcc = Integer.valueOf(netOperator.substring(0, 3));
  int mnc = Integer.valueOf(netOperator.substring(3, 5));
  JSONObject holder = new JSONObject();
  JSONArray array = new JSONArray();
  JSONObject data = new JSONObject();
  try {
   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");
   data.put("cell_id", cid);
   data.put("location_area_code", lac);
   data.put("mobile_countyr_code", mcc);
   data.put("mobile_network_code", mnc);
   array.put(data);
   holder.put("cell_towers", array);
  } catch (JSONException e) {
   e.printStackTrace();
  }
  DefaultHttpClient client = new DefaultHttpClient();
  HttpPost httpPost = new HttpPost("http://www.google.com/loc/json");
  StringEntity stringEntity = null;
  try {
   stringEntity = new StringEntity(holder.toString());
  } catch (UnsupportedEncodingException e) {
   e.printStackTrace();
  }
  httpPost.setEntity(stringEntity);
  HttpResponse httpResponse = null;
  try {
   httpResponse = client.execute(httpPost);
  } catch (ClientProtocolException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
  HttpEntity httpEntity = httpResponse.getEntity();
  InputStream is = null;
  try {
   is = httpEntity.getContent();
  } catch (IllegalStateException e) {
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  InputStreamReader isr = new InputStreamReader(is);
  BufferedReader reader = new BufferedReader(isr);
  StringBuffer stringBuffer = new StringBuffer();
  try {
   String result = "";
   while ((result = reader.readLine()) != null) {
    stringBuffer.append(result);
   }
  } catch (IOException e) {
   e.printStackTrace();
  }
  System.out.println("[sodino]" + stringBuffer.toString());
  txtInfo.setText(stringBuffer.toString());
}
}

2. [代碼]權限設定    

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

3. [圖片] 1.jpg