室内精准定位 源码

package com.amdroid.wifi.test; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.List; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.content.Context; import android.location.Location; import android.location.LocationManager; import android.net.wifi.ScanResult; import android.net.wifi.WifiManager; import android.util.Log; public class WifiInfoUtil { private static WifiManager wifiManager; // 获取WiFi无线服务 public WifiInfoUtil(Context context) { wifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); } // 获取wifi定位经纬度方法 public static Location getLocation() { BufferedReader br = null; // macAddress = wifiManager.getConnectionInfo().getMacAddress(); try { // 接收请求结果，它会将所有链接wifi热点的链接信息返回 List<ScanResult> wifiList = wifiManager.getScanResults(); HttpPost httpRequest = new HttpPost( "http://www.google.com/loc/json"); // 封装请求的参数 JSONObject holder = new JSONObject(); JSONArray array = new JSONArray(); holder.put("version", "1.1.0"); holder.put("host", "maps.google.com"); holder.put("request_address", true); System.out.println("holder=" + holder); for (int i = 0; i < wifiList.size(); i++) { // 只取当前链接信息。通过mac地址进行匹配 // mac地址可以用macAddress = // mainWifi.getConnectionInfo().getMacAddress();获得 if (wifiList.get(i).BSSID.equals(wifiManager .getConnectionInfo().getMacAddress())) { JSONObject current_data = new JSONObject(); current_data.put("mac_address", wifiList.get(i).BSSID); current_data.put("ssid", wifiList.get(i).SSID); current_data.put("signal_strength", wifiList.get(i).level); array.put(current_data); System.out.println("array=" + array); } } holder.put("wifi_towers", array); StringEntity se = new StringEntity(holder.toString()); httpRequest.setEntity(se); HttpResponse resp = new DefaultHttpClient().execute(httpRequest); if (resp.getStatusLine().getStatusCode() == 200) { HttpEntity entity = resp.getEntity(); br = new BufferedReader(new InputStreamReader( entity.getContent())); StringBuffer sb = new StringBuffer(); String result = br.readLine(); while (result != null) { sb.append(result); result = br.readLine(); } JSONObject location = new JSONObject(sb.toString()); location = (JSONObject) location.get("location"); Location loc = new Location(LocationManager.NETWORK_PROVIDER); loc.setLatitude((Double) location.get("latitude")); loc.setLongitude((Double) location.get("longitude")); System.out.println("loc=" + loc); return loc; } return null; } catch (JSONException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } finally { if (null != br) { try { br.close(); } catch (IOException e) { e.printStackTrace(); } } } return null; } }