android 定位的4种方式介绍(2)

public staticLocation getWIFILocation(WifiInfo wifi) {
            if (wifi == null) {
              Log.i( TAG , wifiis null. );
              return null;
            }
            DefaultHttpClient client = newDefaultHttpClient();
            HttpPost post = new HttpPost( http://www.google.com/loc/json );
            JSONObject holder = new JSONObject();
            try {
              holder.put( version , 1.1.0 );
              holder.put( host , maps.google.com );
              JSONObject data;
              JSONArray array = new JSONArray();
              if (wifi.mac != null  wifi.mac.trim().length()  0) {
                data = new JSONObject();
               data.put( mac_address , wifi.mac);
               data.put( signal_strength , 8);
                data.put( age , 0);
                array.put(data);
              }
              holder.put( wifi_towers ,array);
              Log.i( TAG , request json: + holder.toString());
              StringEntity se = newStringEntity(holder.toString());
              post.setEntity(se);
              HttpResponse resp =client.execute(post);
              int state =resp.getStatusLine().getStatusCode();
              if (state == HttpStatus.SC_OK) {
                HttpEntity entity =resp.getEntity();
                if (entity != null) {
                  BufferedReader br = newBufferedReader(
                      newInputStreamReader(entity.getContent()));
                  StringBuffer sb = newStringBuffer();
                  String resute = ;
                  while ((resute =br.readLine()) != null) {
                    sb.append(resute);
                  }
                  br.close();
                  Log.i( TAG , response json: + sb.toString());
                  data = newJSONObject(sb.toString());
                  data = (JSONObject)data.get( location );
                  Location loc = newLocation(
                     android.location.LocationManager.NETWORK_PROVIDER);
                  loc.setLatitude((Double)data.get( latitude ));
                  loc.setLongitude((Double)data.get( longitude ));
                 loc.setAccuracy(Float.parseFloat(data.get( accuracy )
                      .toString()));
                  loc.setTime(System.currentTimeMillis());
                  return loc;
                } else {
                  return null;
                }
              } else {
                Log.v( TAG , state + );
                return null;
              }
            } catch (Exception e) {
              Log.e( TAG ,e.getMessage());
              return null;
            }
          }