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| @SuppressLint("NewApi")
public class TestMap extends Activity implements LocationListener {
private GoogleMap map;
double latitudemin;
double longitudemin;
Marker marker;
ArrayList<HashMap<String, String>> centersList;
private static final String TAG_LONG = "longitude";
private static final String TAG_LAT = "latitude";
int indexMin;
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
// url to get all products list
private static String url_all_products = "http://xxx";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "centers";
private static final String TAG_PID = "_id";
private static final String TAG_NAME = "name";
private static final String TAG_TEL = "tel";
private static final String TAG_ADDRESS = "address";
private static final String TAG_FIELD = "field";
private static final String TAG_EMAIL = "email";
private static final String TAG_CITY = "city";
// products JSONArray
JSONArray centers = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.localisation);
// Hashmap for ListView
centersList = new ArrayList<HashMap<String, String>>();
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
map.setMyLocationEnabled(true);
// Loading products in Background Thread
new LoadAllCenters().execute();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// getMenuInflater().inflate(R.menu.localisation, menu);
return true;
}
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (map == null) {
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
// Check if we were successful in obtaining the map.
if (map != null) {
// The Map is verified. It is now safe to manipulate the map.
}
}
}
private void changeTypeMap() {
//Normal map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
//Hibrid map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
// satellite map.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllCenters extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(TestMap.this);
pDialog.setMessage("Loading Map View. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Centers: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
centers = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < centers.length(); i++) {
JSONObject c = centers.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_PID);
String name = c.getString(TAG_NAME);
String tel = c.getString(TAG_TEL);
String address = c.getString(TAG_ADDRESS);
String field = c.getString(TAG_FIELD);
String city = c.getString(TAG_CITY);
String email = c.getString(TAG_EMAIL);
double longitud = c.getDouble(TAG_LONG);
String longitude = Double.toString(longitud);
double lati = c.getDouble(TAG_LAT);
String latitude = Double.toString(lati);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_PID, id);
map.put(TAG_NAME, name);
map.put(TAG_TEL, tel);
map.put(TAG_ADDRESS, address);
map.put(TAG_CITY, city);
map.put(TAG_FIELD, field);
map.put(TAG_EMAIL, email);
map.put(TAG_LONG, longitude);
map.put(TAG_LAT, latitude);
// adding HashList to ArrayList
centersList.add(map);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// calcul distance min
int indexDistancemin = calculDistanceMin();
// Log.i(getClass().getName(), "index : " + indexmin);
String latitudemn = centersList.get(indexDistancemin).get(TAG_LAT);
double latitudemin = Double.parseDouble(latitudemn);
String longitudemn = centersList.get(indexDistancemin).get(TAG_LONG);
double longitudemin = Double.parseDouble(longitudemn);
Log.i(getClass().getName(), "latitude min : " + latitudemin + " longitude min: " + longitudemin);
// La nouvelle latLng celle de la latitude et longitude min
final LatLng latLng = new LatLng(latitudemin, longitudemin);
marker = map.addMarker(new MarkerOptions().title("center").position(new LatLng(latitudemin, longitudemin)));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 15));
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomIn());
}
}
public int calculDistanceMin(){
float[] results = new float[3];
//initialisation distance min = distance entre 1èr point de la liste et la localisation actuelle
String latitudeinit = centersList.get(1).get(TAG_LAT);
double latitudemin = Double.parseDouble(latitudeinit);
String longitudeinit = centersList.get(1).get(TAG_LONG);
double longitudemin = Double.parseDouble(longitudeinit);
Log.i(getClass().getName(), "latitude default : " + latitudemin + " longitude default: " + longitudemin);
Location.distanceBetween(map.getMyLocation().getLatitude(), map.getMyLocation().getLongitude(), microdegrees(latitudemin), microdegrees(longitudemin), results);
float distanceMin = results[0];
float dmin = 0;
indexMin = 0;
for (int i = 1 ; i< centersList.size() ; i++){
String latitudei = centersList.get(i).get(TAG_LAT);
double latitude = Double.parseDouble(latitudei);
String longitudei = centersList.get(i).get(TAG_LONG);
double longitude = Double.parseDouble(longitudei);
// GeoPoint point = new GeoPoint(microdegrees(latitudeElmt),microdegrees(longitudeElmt));
//myLocation = new MyLocationOverlay(getApplicationContext(), mapView);
Location.distanceBetween(map.getMyLocation().getLatitude(), map.getMyLocation().getLongitude(), microdegrees(latitude), microdegrees(longitude), results);
if (results[0] < distanceMin){
distanceMin = results[0];
indexMin = i;
}
}
dmin = results[0];
return indexMin;
}
private int microdegrees(double value){
return (int)(value*1000000);
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
} |
