Android Fragment : replace Crash and Hide/show don't works - google-maps

Question

I'm making an App that implements this slide-out Menu and i'm pretty much satisfied about the implementation.
I divided my app in multiple Fragment for one Activity so for each section of the menu there is a Fragment.
The point is that i have an OnItemClickListener that allow me to switch beetween Fragments, so I'd tried two methods :
replace() : it works fine for all fragment except for one of them that load a XML which contains a map (code below). On first load there's no problem but when I switch to another fragment and came back to the one with the map, the app crash.
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment" />
<RelativeLayout
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageButton
android:id="#+id/refreshButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginTop="63dp"
android:src="#drawable/refresh"
android:text="Rafraichir" />
</RelativeLayout>
public class MapFragment extends Fragment implements
OnInfoWindowClickListener, LocationListener {
private GoogleMap gMap;
Geocoder geocoder;
private LocationManager locationManager;
private Location userLocation;
private String provider;
private ImageButton refreshButton;
ArrayList<Parking> Parkings;
Context context;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.fragmen_map,
container, false);
gMap = ((SupportMapFragment) getFragmentManager().findFragmentById(
R.id.map)).getMap();
gMap.setOnInfoWindowClickListener(this);
context = getActivity();
geocoder = new Geocoder(context);
refreshButton = (ImageButton) view.findViewById(R.id.refreshButton);
refreshButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
getParkingsConnection = new GetParkingsConnection(context);
getParkingsConnection.execute(null, null, null);
myParkings = new ArrayList<Parking>();
}
});
// Geolocaliation
LocationManager service = (LocationManager) getActivity()
.getSystemService(getActivity().LOCATION_SERVICE);
boolean enabled = service
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// Check if enabled and if not send user to the GSP settings
// Better solution would be to display a dialog and suggesting to
// go to the settings
if (!enabled) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
// Get the location manager
locationManager = (LocationManager) getActivity().getSystemService(
getActivity().LOCATION_SERVICE);
// Define the criteria how to select the locatioin provider -> use
// default
Criteria criteria = new Criteria();
provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
return view;
}
private Double[] getLatAndLong(String addresse) {
List<Address> addresses = null;
Double latALng[] = new Double[2];
try {
addresses = geocoder.getFromLocationName(addresse, 1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (addresses.size() > 0) {
double latitude = addresses.get(0).getLatitude();
double longitude = addresses.get(0).getLongitude();
latALng[0] = latitude;
latALng[1] = longitude;
}
return latALng;
}
private GetParkingsConnection getParkingsConnection;
JSONObject json;
// Non-Statice inner class : connection au serveur
private class GetParkingsConnection extends AsyncTask<String, Void, String> {
Context mContext;
private ProgressDialog mDialog;
GetParkingsConnection(Context context) {
mContext = context;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
mDialog = new ProgressDialog(mContext);
mDialog.setMessage("Mise à jour de la carte...");
mDialog.show();
}
#Override
protected String doInBackground(String... urls) {
String resultat;
resultat = getParkings();
return resultat;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
Log.d("JSON", result);
JSONArray jArray;
try {
json = new JSONObject(result);
jArray = json.getJSONArray("parking");
System.out.println("*****Parkings*****" + jArray.length());
for (int i = 0; i < jArray.length(); i++) {
JSONObject json_data = jArray.getJSONObject(i);
Log.d("adresse :",
json_data.getString("adresse") + ", nom :"
+ json_data.getString("nom")
+ ", latitude :"
+ json_data.getDouble("latitude")
+ ", longitude :"
+ json_data.getDouble("longitude"));
String adresse = json_data.getString("adresse");
Double latALng[] = getLatAndLong(adresse);
Double lat = latALng[0]; // json_data.getDouble("latitude");
Double lng = latALng[1]; // json_data.getDouble("longitude");
String nom = json_data.getString("nom");
LatLng parkingLocation = new LatLng(lat, lng);
Marker parking = gMap.addMarker(new MarkerOptions()
.position(parkingLocation)
.title(nom)
.snippet(adresse)
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.my_marker)));
Parking park = new Parking(parking.getId(), adresse, nom,
"", lat, lng);
myParkings.add(park);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mDialog.dismiss();
}
// Fonction effectuant uenrequête de type GET sur le fichier
// getParking.php
protected String getParkings() {
HttpResponse response = null;
String res = "";
try {
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet();
// request.setURI(new
// URI("http://pkdom.1x.biz/getParkings.php"));
request.setURI(new URI(
"http://glennsonna.fr/webService/getParkings"));
response = client.execute(request);
HttpEntity entity = response.getEntity();
// JSONObject json = new JSONObject();
res = EntityUtils.toString(entity);
} catch (URISyntaxException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return res;
}
}
#Override
public void onInfoWindowClick(Marker marker) {
// TODO Auto-generated method stub
Parking parkingToSend = null;
// TOAST
/*
* int p = 0;
*
* while(myParkings.get(p).idMarker != marker.getId() && p <
* myParkings.size()){ Log.d("Marker :" + marker.getId(),
* myParkings.get(p).idMarker);
*
* if(myParkings.get(p).idMarker.equals(marker.getId()) ){
* parkingToSend = myParkings.get(p); Context context =
* getApplicationContext(); CharSequence text = "Match" +
* parkingToSend.adresse; int duration = Toast.LENGTH_SHORT; Toast toast
* = Toast.makeText(context, text, duration); toast.show(); }
*
* p++; }
*/
for (int p = 0; p < myParkings.size(); p++) {
Log.d("Marker :" + marker.getId(), myParkings.get(p).idMarker);
if (myParkings.get(p).idMarker.equals(marker.getId())) {
parkingToSend = myParkings.get(p);
}
}
if (parkingToSend != null) {
Intent i = new Intent(context.getApplicationContext(),
ParkingDetail.class);
i.putExtra("id", parkingToSend.idMarker);
i.putExtra("adresse", parkingToSend.adresse);
i.putExtra("nom", parkingToSend.nom);
i.putExtra("descri", parkingToSend.description);
i.putExtra("latitude", parkingToSend.lat);
i.putExtra("longitude", parkingToSend.lng);
startActivity(i);
}
}
#Override
public void onLocationChanged(Location user) {
// TODO Auto-generated method stub
Log.d("Latitude", ":" + user.getLatitude());
Log.d("Longitude", ":" + user.getLongitude());
this.gMap.setMyLocationEnabled(true);
}
#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
}
}
hide() & show() : I can switch beetween fragment but excepted for the first screen (the map) all the other show a blank screen without content.
private MenuDrawer mMenuDrawer;
private MenuAdapter mAdapter;
private ListView mList;
private GoogleMap gMap;
private int mActivePosition = -1;
List<Object> mmyFragment;
Fragment currentFragment;
myMapFragment mmyMapFragment;
myMonCompteFragment mmyMonCompteFragment;
myPaiementFragment mmyPaiementFragment;
myReservationsFragment mmyReservationsFragment;
myFavorisFragment mmyFavorisFragment;
myCodePromoFragment mmyCodePromoFragment;
myAboutFragment mmyAboutFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.activity_my_map);
ActionBar actionBar = this.getActionBar();
actionBar.setSubtitle("Trouvez votre parking");
actionBar.setTitle("my");
actionBar.setDisplayHomeAsUpEnabled(true);
setupMenu();
setupFragments();
}
private void setupMenu() {
mMenuDrawer = MenuDrawer.attach(this, Position.LEFT);
mMenuDrawer.setContentView(R.layout.activity_my_map);
List<Object> items = new ArrayList<Object>();
items.add(new Item("Carte", R.drawable.ic_action_refresh_dark));
items.add(new Item("Mon Compte", R.drawable.ic_action_refresh_dark));
items.add(new Item("Paiement", R.drawable.ic_action_select_all_dark));
items.add(new Item("Mes Réservations",
R.drawable.ic_action_select_all_dark));
items.add(new Item("Mes favoris", R.drawable.ic_action_refresh_dark));
// items.add(new Category(" "));
items.add(new Item("Code Promo", R.drawable.ic_action_refresh_dark));
items.add(new Item("A propos", R.drawable.ic_action_select_all_dark));
// A custom ListView is needed so the drawer can be notified when it's
// scrolled. This is to update the position
// of the arrow indicator.
mList = new ListView(this);
mAdapter = new MenuAdapter(items);
mList.setAdapter(mAdapter);
mList.setOnItemClickListener(mItemClickListener);
mMenuDrawer.setMenuView(mList);
}
private void setupFragments() {
mmyMapFragment = new myMapFragment();
mmyMonCompteFragment = new myMonCompteFragment();
mmyPaiementFragment = new myPaiementFragment();
mmyReservationsFragment = new myReservationsFragment();
mmyFavorisFragment = new myFavorisFragment();
mmyCodePromoFragment = new myCodePromoFragment();
mmyAboutFragment = new myAboutFragment();
mmyFragment = new ArrayList<Object>();
mmyFragment.add(mmyMapFragment);
mmyFragment.add(mmyMonCompteFragment);
mmyFragment.add(mmyPaiementFragment);
mmyFragment.add(mmyReservationsFragment);
mmyFragment.add(mmyFavorisFragment);
mmyFragment.add(mmyCodePromoFragment);
mmyFragment.add(mmyAboutFragment);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
.beginTransaction();
fragmentTransaction.replace(R.id.myContenu, mmyMapFragment);
fragmentTransaction.commit();
currentFragment = mmyMapFragment;
}
private AdapterView.OnItemClickListener mItemClickListener = new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
mActivePosition = position;
mMenuDrawer.setActiveView(view, position);
mMenuDrawer.closeMenu();
if ((mmyFragment.get(position) != null)
/*&& (mmyFragment.get(position).getClass() != currentFragment
.getClass())*/) {
Fragment nexFragment = (Fragment) mmyFragment
.get(position);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
.beginTransaction();
fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,
android.R.anim.fade_out);
fragmentTransaction.hide(currentFragment);
if (!nexFragment.isHidden()) {
//fragmentTransaction.add(nexFragment, nexFragment.getTag());
Toast.makeText(
getApplicationContext(),
""
+ nexFragment.getClass().toString()
+ " : "
+ mmyFragment.indexOf(mmyFragment
.get(position)), Toast.LENGTH_SHORT).show();
}
//fragmentTransaction.addToBackStack(nexFragment.getTag());
fragmentTransaction.attach(nexFragment);
fragmentTransaction.replace(R.id.myContenu, nexFragment);
//fragmentTransaction.show(nexFragment);
currentFragment = nexFragment;
fragmentTransaction.commit();...}
After one day i finaly found the answer here
So i just implemented the code below. But I have to use replace(); so I'll find a way to save my map state.
public void onDestroyView ()
{
try{
SupportMapFragment fragment = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map));
FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
ft.remove(fragment);
ft.commit();
}catch(Exception e){
}
super.onDestroyView();
}