google经纬度互转

https://developers.google.com/maps/documentation/geocoding/?hl=zh-CN#GeocodingRequests获得google的GPS服务的api文档

?

?

package com.hhj.gps;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

/*import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.Projection;*/

import android.R.integer;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class GoogleGeographyQuery{
??? static double lng;
??? static double lat;
??? /*查询经纬度*/
??? public static double[] jingweidu(String AddressName){
??? ??? //List<Map<String, Object>> mData=new ArrayList<Map<String, Object>>();
??? ??? String url = "http://maps.googleapis.com/maps/api/geocode/json?address=" + AddressName + "&sensor=false";
??? ??? HttpClient client = new DefaultHttpClient();
??? ??? HttpGet get = new HttpGet(url);
??? ??? try {
??? ??? ??? HttpResponse response = client.execute(get);
??? ??? ??? HttpEntity entity = response.getEntity();
??? ??? ??? InputStream input = entity.getContent();
??? ??? ??? int t;
??? ??? ??? StringBuffer buffer = new StringBuffer();
??? ??? ??? while ((t = input.read()) != -1) {
??? ??? ??? ??? buffer.append((char) t);
??? ??? ??? ???
??? ??? ??? }
??? ??? ??? //tv.setText(buffer);

??? ??? ??? // json解析
??? ??? ??? JSONObject object = new JSONObject(buffer.toString());
??? ??? ??? JSONObject location = object.getJSONArray("results")
??? ??? ??? ??? ??? .getJSONObject(0)// 获得中括号的内容
??? ??? ??? ??? ??? .getJSONObject("geometry")// 获得大括号中的内容
??? ??? ??? ??? ??? .getJSONObject("location");
??? ??? ??? lng = location.getDouble("lng");
??? ??? ??? lat = location.getDouble("lat");
??? ??? ??? Log.i("HHJ", "经纬度是 : "+lng+"?? "+lat);
??? ??? ??? double[] data ={lng,lat};
??? ??? ??? return data;

??? ??? } catch (ClientProtocolException e) {
??? ??? ??? // TODO Auto-generated catch block
??? ??? ??? e.printStackTrace();
??? ??? } catch (IOException e) {
??? ??? ??? // TODO Auto-generated catch block
??? ??? ??? e.printStackTrace();
??? ??? } catch (JSONException e) {
??? ??? ??? // TODO Auto-generated catch block
??? ??? ??? e.printStackTrace();
??? ??? }
??? ??? return null;
???
??? }
???
??? public static String geocodeAddr(String latitude, String longitude) {
??? ??? String addr = "";
??? ??? // 也可以是http://maps.google.cn/maps/geo?output=csv&key=abcdef&q=%s,%s，不过解析出来的是英文地址
??? ??? // 密钥可以随便写一个key=abc
??? ??? // output=csv,也可以是xml或json，不过使用csv返回的数据最简洁方便解析
??? ??? String url = String.format("http://ditu.google.cn/maps/geo?output=csv&key=abcdef&q=%s,%s",latitude, longitude);
??? ??? URL myURL = null;
??? ??? URLConnection httpsConn = null;
??? ??? try {
??? ??? ??? myURL = new URL(url);
??? ??? } catch (MalformedURLException e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? return null;
??? ??? }

??? ??? try {
??? ??? ??? httpsConn = (URLConnection) myURL.openConnection();
??? ??? ??? if (httpsConn != null) {
??? ??? ??? ??? InputStreamReader insr = new InputStreamReader(httpsConn.getInputStream(), "UTF-8");
??? ??? ??? ??? BufferedReader br = new BufferedReader(insr);
??? ??? ??? ??? String data = null;
??? ??? ??? ??? if ((data = br.readLine()) != null) {
??? ??? ??? ??? ??? System.out.println(data);
??? ??? ??? ??? ??? String[] retList = data.split(",");
??? ??? ??? ??? ??? if (retList.length > 2 && ("200".equals(retList[0]))) {
??? ??? ??? ??? ??? ??? addr = retList[2];
??? ??? ??? ??? ??? ??? addr = addr.replace("\"", "");
??? ??? ??? ??? ??? } else {
??? ??? ??? ??? ??? ??? addr = "";
??? ??? ??? ??? ??? }
??? ??? ??? ??? ??? Log.i("HHJ", "123? : "+addr);
??? ??? ??? ??? }
??? ??? ??? ??? insr.close();
??? ??? ??? }
??? ??? } catch (IOException e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? return null;
??? ??? }
??? ??? return addr;
??? }

}