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---恢复内容开始---
extends:http://blog.csdn.net/h7870181/article/details/12505883
Google Maps API 网络服务
官网地址 :
https://developers.google.com/maps/documentation/webservices/?hl=zh-cn
其实就是一些接口,供我们调用,如:
1、根据地址获取经纬度
http://maps.google.com/maps/api/geocode/json?address=北京&language=zh-CN&sensor=false
2、计算路线数据
http://maps.googleapis.com/maps/api/directions/json?origin=北京&destination=上海&sensor=false&mode=driving
3、根据经纬度获取详细地址
http://maps.google.com/maps/api/geocode/json?latlng="latlng"&language=zh-CN&sensor=false
等等还有很多,大家可以自己去找找
给大家介绍一下如果利用这些接口
实现网络定位:
首先获取经纬度
/** * 获取本地 * @param context * @return */ public String getLocation(Context context){ LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); // 返回所有已知的位置提供者的名称列表,包括未获准访问或调用活动目前已停用的。 //List<String> lp = lm.getAllProviders(); Criteria criteria = new Criteria(); criteria.setCostAllowed(false); //设置位置服务免费 criteria.setAccuracy(Criteria.ACCURACY_COARSE); //设置水平位置精度 //getBestProvider 只有允许访问调用活动的位置供应商将被返回 String providerName = lm.getBestProvider(criteria, true); if (providerName != null) { Location location = lm.getLastKnownLocation(providerName); if(location!=null){ //获取维度信息 double latitude = location.getLatitude(); //获取经度信息 double longitude = location.getLongitude(); return latitude+","+longitude; } } return ""; }
调用API,我这里写了一个工具类
package com.techrare.utils; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.ParseException; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.protocol.HTTP; import org.apache.http.util.EntityUtils; public class MapsApiUtils { private static MapsApiUtils mapsApiUtils = new MapsApiUtils(); /** * 单例模式 * * @return */ synchronized public static MapsApiUtils getInstance() { return mapsApiUtils; } /** * 根据API地址和参数获取响应对象HttpResponse * * @param params * @param url * @return */ private HttpResponse post(Map<String, Object> params, String url) { HttpClient client = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(url); httpPost.addHeader("charset", HTTP.UTF_8); httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8"); HttpResponse response = null; if (params != null && params.size() > 0) { List<NameValuePair> nameValuepairs = new ArrayList<NameValuePair>(); for (String key : params.keySet()) { nameValuepairs.add(new BasicNameValuePair(key, (String) params .get(key))); } try { httpPost.setEntity(new UrlEncodedFormEntity(nameValuepairs, HTTP.UTF_8)); response = client.execute(httpPost); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (RuntimeException e) { e.printStackTrace(); } } else { try { response = client.execute(httpPost); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return response; } /** * 得到JSON值 * * @param params * @param url * @return */ private Object getValues(Map<String, Object> params, String url) { String token = ""; HttpResponse response = post(params, url); if (response != null) { try { token = EntityUtils.toString(response.getEntity()); response.removeHeaders("operator"); } catch (ParseException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return token; } /** * 根据google API 获取两地的路线 * @param origin 起点 * @param destination 终点 * @param mode 出行方式 driving驾车, walking步行, bicycling自行车, transit公交车 * @param sensor 是否来自装有位置传感器的设备 true Or false * @return */ public Object getRoutes(String origin, String destination) { String url = "http://maps.googleapis.com/maps/api/directions/json?origin="+ origin +"&" + "destination="+ destination +"&sensor=false&mode=driving®ion=zh"; return getValues(null, url); } /** * 根据经纬度 获取地理位置 * LatLng 经纬度以逗号隔开 纬度,经度 * @return */ public Object getAddress(String latlng) { String url = "http://maps.google.com/maps/api/geocode/json?latlng="+ latlng+"&language=zh-CN&sensor=false"; return getValues(null, url); } /** * 根据地址获取经纬度 * @return */ public Object getLatlng(String str) { String url = "http://maps.google.com/maps/api/geocode/json?address="+ str+"&language=zh-CN&sensor=false"; return getValues(null, url); } }
调用getAddress()方法 传递经纬度来获取详细地址 返回的是JSON字符串,大家解析一下就可以
計算路线数据
可以得到起点到终点的时间和路程
调用getRoutes() 方法,传起点和终点
MapsApiUtils.getInstance().getLatLng("39.90403,116.407526");
根据地址获取经纬度
Android Google Maps API 网络服务用于网络定位、计算路线、获取经纬度、获取详细地址等
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原文地址:http://www.cnblogs.com/niray/p/4681472.html