Android实现自动通过GPS定位用户所在地名

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最近开始跟随实验室做Android项目，因为之前一直在写PHP，所以比较吃力，这里写的功能借鉴了CSDN博客的大神的博文，在这里提出谢谢了（大神博文的地址： http://blog.csdn.net/octobershiner/article/details/6628370）。

本来就是想做一个定位获取到经纬度的，老大说要把地名获取放到客户端，只能咬牙做了。

这里只上传一个功能类：

package com.example.helloworld;import java.io.IOException;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.json.JSONException;import org.json.JSONObject;import android.app.Activity;import android.content.Context;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.util.Log;/** *提供设备获取位置信息的入口，通过GPS进行定位 *需要请求定位权限（android.permission.ACCESS_FINE_LOCATION） *实例化时必须传参，将Activity传进来，不然会报错 */public class GetLocationInfo {private LocationManager manager;private Activity activity;private static final String TAG = "LOCATION DEMO";public GetLocationInfo(Activity activity) {this.activity = activity;}public String getLocInfo() {String locInfo = null;//获取系统服务manager = (LocationManager)activity.getSystemService(Context.LOCATION_SERVICE);Location location = manager.getLastKnownLocation(LocationManager.GPS_PROVIDER);manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 6000, 10, locationListener); //获取位置信息locInfo = updateLocation(location);return locInfo;} private final LocationListener locationListener = new LocationListener() {             public void onLocationChanged(Location location) {             updateLocation(location);             }             public void onProviderDisabled(String provider){              updateLocation(null);                 Log.i(TAG, "Provider now is disabled..");          }             public void onProviderEnabled(String provider){              Log.i(TAG, "Provider now is enabled..");          }             public void onStatusChanged(String provider, int status,Bundle extras){ }     };  private String updateLocation(Location location) {String latLng = null;if(location != null) {final double lat = location.getLatitude();final double lng = location.getLongitude();new Thread(){public void run() {getLocName(lat, lng);};}.start();//latLng = getLocName(lat, lng);//latLng = "Latitude:" + lat + "  Longitude:" + lng;} else {latLng = "Can't access your location";}return latLng;}private String getLocName(double latitude, double longitude) {String locName = null;String key = "OB4BZ-D4W3U-B7VVO-4PJWW-6TKDJ-WPB77";String uri = "http://apis.map.qq.com/ws/geocoder/v1/?location=" + latitude + ',' + longitude + "&key=" + key;/*建立HTTP GET 对象*/HttpGet httpRequest = new HttpGet(uri);try {/*发送请求并等待响应*/  HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequest);  /*若状态码为200 ok*/  if(httpResponse.getStatusLine().getStatusCode() == 200) {  /*读*/  String strResult = EntityUtils.toString(httpResponse.getEntity());  locName = changeJsonToArray(strResult);Log.d("message", locName);} else {  locName = "反地址解析请求中断";}  } catch(ClientProtocolException e) {locName = e.getMessage().toString();  e.printStackTrace();  } catch(IOException e) {locName = e.getMessage().toString();e.printStackTrace();} catch(Exception e) {locName = e.getMessage().toString();e.printStackTrace();}return locName;}private static String changeJsonToArray(String json){String jsonArray = null;JSONObject jsonObject = null;try {jsonObject = new JSONObject(json);jsonArray = jsonObject.getString("result");jsonObject = new JSONObject(jsonArray);jsonArray = jsonObject.getString("address");} catch (JSONException e) {// TODO Auto-generated catch blocke.printStackTrace();} return jsonArray;}}

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