利用谷歌接口实现基站定位

package lab.sodino.location;

002 

003import java.io.BufferedReader;

004import java.io.IOException;

005import java.io.InputStream;

006import java.io.InputStreamReader;

007import java.io.UnsupportedEncodingException;

008import org.apache.http.HttpEntity;

009import org.apache.http.HttpResponse;

010import org.apache.http.client.ClientProtocolException;

011import org.apache.http.client.methods.HttpPost;

012import org.apache.http.entity.StringEntity;

013import org.apache.http.impl.client.DefaultHttpClient;

014import org.json.JSONArray;

015import org.json.JSONException;

016import org.json.JSONObject;

017import android.app.Activity;

018import android.content.Context;

019import android.os.Bundle;

020import android.telephony.TelephonyManager;

021import android.telephony.gsm.GsmCellLocation;

022import android.view.View;

023import android.widget.Button;

024import android.widget.TextView;

025 

026/**

027 * Google定位的实现.<br/>

028 * Geolocation的详细信息请参见：<br/>

029 * <a

030 * href="http://code.google.com/apis/gears/geolocation_network_protocol.html">

031 * http://code.google.com/apis/gears/geolocation_network_protocol.html</a>

032 */

033public class LocationAct extends Activity {

034    private TextView txtInfo;

035    public void onCreate(Bundle savedInstanceState) {

036        super.onCreate(savedInstanceState);

037        setContentView(R.layout.main);

038        Button btn = (Button) findViewById(R.id.btnStart);

039        txtInfo = (TextView) findViewById(R.id.txtInfo);

040        btn.setOnClickListener(new Button.OnClickListener() {

041            public void onClick(View view) {

042                getLocation();

043            }

044        });

045    }

046    private void getLocation() {

047        TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

048        GsmCellLocation gsmCell = (GsmCellLocation) tm.getCellLocation();

049        int cid = gsmCell.getCid();

050        int lac = gsmCell.getLac();

051        String netOperator = tm.getNetworkOperator();

052        int mcc = Integer.valueOf(netOperator.substring(0, 3));

053        int mnc = Integer.valueOf(netOperator.substring(3, 5));

054        JSONObject holder = new JSONObject();

055        JSONArray array = new JSONArray();

056        JSONObject data = new JSONObject();

057        try {

058            holder.put("version", "1.1.0");

059            holder.put("host", "maps.google.com");

060            holder.put("address_language", "zh_CN");

061            holder.put("request_address", true);

062            holder.put("radio_type", "gsm");

063            holder.put("carrier", "HTC");

064            data.put("cell_id", cid);

065            data.put("location_area_code", lac);

066            data.put("mobile_countyr_code", mcc);

067            data.put("mobile_network_code", mnc);

068            array.put(data);

069            holder.put("cell_towers", array);

070        } catch (JSONException e) {

071            e.printStackTrace();

072        }

073        DefaultHttpClient client = new DefaultHttpClient();

074        HttpPost httpPost = new HttpPost("http://www.google.com/loc/json");

075        StringEntity stringEntity = null;

076        try {

077            stringEntity = new StringEntity(holder.toString());

078        } catch (UnsupportedEncodingException e) {

079            e.printStackTrace();

080        }

081        httpPost.setEntity(stringEntity);

082        HttpResponse httpResponse = null;

083        try {

084            httpResponse = client.execute(httpPost);

085        } catch (ClientProtocolException e) {

086            e.printStackTrace();

087        } catch (IOException e) {

088            e.printStackTrace();

089        }

090        HttpEntity httpEntity = httpResponse.getEntity();

091        InputStream is = null;

092        try {

093            is = httpEntity.getContent();

094        } catch (IllegalStateException e) {

095            e.printStackTrace();

096        } catch (IOException e) {

097            // TODO Auto-generated catch block

098            e.printStackTrace();

099        }

100        InputStreamReader isr = new InputStreamReader(is);

101        BufferedReader reader = new BufferedReader(isr);

102        StringBuffer stringBuffer = new StringBuffer();

103        try {

104            String result = "";

105            while ((result = reader.readLine()) != null) {

106                stringBuffer.append(result);

107            }

108        } catch (IOException e) {

109            e.printStackTrace();

110        }

111        System.out.println("[sodino]" + stringBuffer.toString());

112        txtInfo.setText(stringBuffer.toString());

113    }

114}

[代码] 权限设定

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

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

[图片] 1.jpg