利用Google接口实现基站定位

LocationAct.java

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001	package lab.sodino.location;

002

003	import java.io.BufferedReader;

004	import java.io.IOException;

005	import java.io.InputStream;

006	import java.io.InputStreamReader;

007	import java.io.UnsupportedEncodingException;

008	import org.apache.http.HttpEntity;

009	import org.apache.http.HttpResponse;

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

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

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

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

014	import org.json.JSONArray;

015	import org.json.JSONException;

016	import org.json.JSONObject;

017	import android.app.Activity;

018	import android.content.Context;

019	import android.os.Bundle;

020	import android.telephony.TelephonyManager;

021	import android.telephony.gsm.GsmCellLocation;

022	import android.view.View;

023	import android.widget.Button;

024	import 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

*/

033	public 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

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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