复制代码 代码如下:

package com.yy;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import javax.xml.parsers.SAXParser;

import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;

import org.xml.sax.InputSource;

import org.xml.sax.SAXException;

import org.xml.sax.XMLReader;

import org.xml.sax.helpers.DefaultHandler;

import android.content.Context;

import android.location.Location;

import android.location.LocationManager;

public class GetCity {

/**

* 借助Google MAP 通过用户当前经纬度 获得用户当前城市

*/

static final String GOOGLE_MAPS_API_KEY = "abcdefg";

private LocationManager locationManager;

private Location currentLocation;

private String city="全国";

public GetCity(Context context) {

this.locationManager = (LocationManager) context

.getSystemService(Context.LOCATION_SERVICE);

//只是简单的获取城市 不需要实时更新 所以这里先注释

// this.locationManager.requestLocationUpdates(

// LocationManager.GPS_PROVIDER, 1000, 0,

// new LocationListener() {

// public void onLocationChanged(Location loc) {

// //当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发

// // Save the latest location

// currentLocation = loc;

// // Update the latitude & longitude TextViews

// System.out

// .println("getCity()"

// + (loc.getLatitude() + " " + loc

// .getLongitude()));

// }

//

// public void onProviderDisabled(String arg0) {

// System.out.println(".onProviderDisabled(关闭)"+arg0);

// }

//

// public void onProviderEnabled(String arg0) {

// System.out.println(".onProviderEnabled(开启)"+arg0);

// }

//

// public void onStatusChanged(String arg0, int arg1,

// Bundle arg2) {

// System.out.println(".onStatusChanged(Provider的转态在可用、" +

// "暂时不可用和无服务三个状态直接切换时触发此函数)"+

// arg0+" "+arg1+" "+arg2);

// }

// });

currentLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

if (currentLocation == null)

currentLocation = locationManager

.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

}

/**

* 开始解析

*/

public void start() {

if(currentLocation!=null){

new Thread(){

public void run(){

String temp=reverseGeocode(currentLocation);

if(temp!=null&&temp.length()>=2)

city=temp;

}

}.start();

}else{

System.out.println("GetCity.start()未获得location");

}

}

/**

* 获得城市

* @return

*/

public String getCity(){

return city;

}

/**

* 通过Google map api 解析出城市

* @param loc

* @return

*/

public String reverseGeocode(Location loc) {

// http://maps.google.com/maps/geo?q=40.714224,-73.961452&output=json&oe=utf8&sensor=true_or_false&key=your_api_key

String localityName = "";

HttpURLConnection connection = null;

URL serverAddress = null;

try {

// build the URL using the latitude & longitude you want to lookup

// NOTE: I chose XML return format here but you can choose something

// else

serverAddress = new URL("http://maps.google.com/maps/geo?q="

+ Double.toString(loc.getLatitude()) + ","

+ Double.toString(loc.getLongitude())

+ "&output=xml&oe=utf8&sensor=true&key="

+ GOOGLE_MAPS_API_KEY);

// set up out communications stuff

connection = null;

// Set up the initial connection

connection = (HttpURLConnection) serverAddress.openConnection();

connection.setRequestMethod("GET");

connection.setDoOutput(true);

connection.setReadTimeout(10000);

connection.connect();

try {

InputStreamReader isr = new InputStreamReader(connection

.getInputStream());

InputSource source = new InputSource(isr);

SAXParserFactory factory = SAXParserFactory.newInstance();

SAXParser parser = factory.newSAXParser();

XMLReader xr = parser.getXMLReader();

GoogleReverseGeocodeXmlHandler handler = new GoogleReverseGeocodeXmlHandler();

xr.setContentHandler(handler);

xr.parse(source);

localityName = handler.getLocalityName();

System.out.println("GetCity.reverseGeocode()"+localityName);

} catch (Exception ex) {

ex.printStackTrace();

}

} catch (Exception ex) {

ex.printStackTrace();

System.out.println("GetCity.reverseGeocode()"+ex);

}

return localityName;

}

/**

* The final piece of this puzzle is parsing the xml tha