private void initBaiduMap() {
mapView = (MapView) findViewById(R.id.bmapView);
baiduMap = mapView.getMap();
baiduMap.setMaxAndMinZoomLevel(18, 13);
IntentFilter iFilter = new IntentFilter();
iFilter.addAction(SDKInitializer.SDK_BROADTCAST_ACTION_STRING_PERMISSION_CHECK_ERROR);
iFilter.addAction(SDKInitializer.SDK_BROADCAST_ACTION_STRING_NETWORK_ERROR);
receiver = new BaiduReceiver();
registerReceiver(receiver, iFilter);
geoCoder = GeoCoder.newInstance();
geoCoder.setOnGetGeoCodeResultListener(this);
Intent intent = getIntent();
intentType = intent.getStringExtra(TYPE);
initActionBar(R.string.chat_position);
if (intentType.equals(TYPE_SELECT)) {
// 选择发送位置
// 开启定位图层
baiduMap.setMyLocationEnabled(true);
baiduMap.setMyLocationConfigeration(
new MyLocationConfigeration(MyLocationConfigeration.LocationMode.NORMAL, true, null));
// 定位初始化
locClient = new LocationClient(this);
locClient.registerLocationListener(myListener);
LocationClientOption option = new LocationClientOption();
option.setProdName("avosim");
option.setOpenGps(true);
option.setCoorType("bd09ll");
option.setScanSpan(1000);
option.setOpenGps(true);
option.setIsNeedAddress(true);
option.setIgnoreKillProcess(true);
locClient.setLocOption(option);
locClient.start();
if (locClient != null && locClient.isStarted()) {
locClient.requestLocation();
}
if (lastLocation != null) {
// 显示在地图上
LatLng ll = new LatLng(lastLocation.getLatitude(), lastLocation.getLongitude());
MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);
baiduMap.animateMapStatus(u);
}
} else {
Bundle b = intent.getExtras();
LatLng latlng = new LatLng(b.getDouble(LATITUDE), b.getDouble(LONGITUDE)); // 维度在前，经度在后
baiduMap.setMapStatus(MapStatusUpdateFactory.newLatLng(latlng));
OverlayOptions ooA = new MarkerOptions().position(latlng).icon(descriptor).zIndex(9);
baiduMap.addOverlay(ooA);
}
}
/**
* Retrieves the favorite places of a user
*
* <p>POST object must be the user_id as integer
*
* @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest,
* javax.servlet.http.HttpServletResponse)
* <p>TODO : thumbnail-pictures
*/
@SuppressWarnings("unchecked")
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// establish database connection
Connection conn = dao.connect();
Statement stmt = null;
String user_id = null;
String lat_user = null;
String lng_user = null;
// retrieve data from request
if (request.getParameter("user_id") != null && !request.getParameter("user_id").isEmpty())
user_id = request.getParameter("user_id");
if (request.getParameter("lat") != null && !request.getParameter("lat").isEmpty())
lat_user = request.getParameter("lat");
if (request.getParameter("lng") != null && !request.getParameter("lng").isEmpty())
lng_user = request.getParameter("lng");
// create query
String search_query =
" SELECT m.meal_id, m.user_id, m.meal_name, m.meal_time, m.meal_price, u.latitude, "
+ "m.meal_servings, m.meal_bookings, u.longitude, u.street_no, u.postal_code, u.city, u.country, "
+ "m.category, m.rating_count, m.thumbnail "
+ "FROM T_MEALS m "
+ "JOIN T_USERS u on m.USER_ID = u.USER_ID "
+ "JOIN T_FAVORITES F on m.MEAL_ID = F.MEAL_ID "
+ "WHERE f.user_ID = "
+ user_id;
JSONArray meals = new JSONArray();
try {
// query database
stmt = conn.createStatement();
ResultSet rs_meals = stmt.executeQuery(search_query);
// convert result into JSON
while (rs_meals.next()) {
JSONObject o = new JSONObject();
o.put("meal_id", rs_meals.getString("MEAL_ID"));
o.put("user_id", rs_meals.getString("USER_ID"));
o.put("name", rs_meals.getString("MEAL_NAME"));
o.put("price", rs_meals.getString("MEAL_PRICE"));
o.put("servings", rs_meals.getString("MEAL_SERVINGS"));
o.put("bookings", rs_meals.getString("MEAL_BOOKINGS"));
o.put("city", rs_meals.getString("CITY"));
o.put("street", rs_meals.getString("STREET_NO"));
o.put("postal_code", rs_meals.getString("POSTAL_CODE"));
o.put("lat", rs_meals.getString("LATITUDE"));
o.put("long", rs_meals.getString("LONGITUDE"));
o.put("country", rs_meals.getString("COUNTRY"));
o.put("rating", rs_meals.getString("RATING_COUNT"));
o.put("category", rs_meals.getString("CATEGORY"));
o.put("time", rs_meals.getString("MEAL_TIME"));
// convert thumbnail-image to JSON
String image = null;
if (rs_meals.getBinaryStream("THUMBNAIL") != null) {
try {
InputStream in = rs_meals.getBinaryStream("THUMBNAIL");
byte[] byteimage = IOUtils.toByteArray(in);
BASE64Encoder encoder = new BASE64Encoder();
image = encoder.encodeBuffer(byteimage);
} catch (Exception e) {
e.printStackTrace();
}
}
o.put("thumbnail", image);
Double lat_place = null;
Double lng_place = null;
// add distance to user in ##.## km
if (rs_meals.getString("LATITUDE") != null
&& lat_user != null
&& lng_user != null
&& rs_meals.getString("LONGITUDE") != null) {
lat_place = Double.valueOf(rs_meals.getString("LATITUDE"));
lng_place = Double.valueOf(rs_meals.getString("LONGITUDE"));
float distance =
gc.distFrom(
new Float(Double.valueOf(lat_user)).floatValue(),
new Float(Double.valueOf(lng_user)).floatValue(),
new Float(lat_place).floatValue(),
new Float(lng_place).floatValue());
o.put("distance", String.valueOf(distance));
} else {
o.put("distance", "null");
}
meals.add(o);
}
response.setStatus(HttpServletResponse.SC_OK);
} catch (SQLException e) {
e.printStackTrace();
response.setStatus(HttpServletResponse.SC_CONFLICT);
} finally {
// close connection
dao.close(conn);
}
// send result to client
String json = meals.toJSONString();
response.setContentType("text/javascript");
response.getOutputStream().print(json);
response.flushBuffer();
}
