Volejte AsyncTask z jiné třídy a vraťte null Android Studio

Snažím se zavolat AsyncTask pomocí metody z ParseQuerys Class, abych tyto informace použil v ListView mého Fragmentu lvRestaurantFrag. Problém je v tom, že metoda vrací null, protože AsyncTask nedorazí na onPostExecute. Nevím, jak to mohu opravit.
Zde nechávám svůj kód:
JSON
Odkaz na API
[
{
"idBranchRestaurant": 1,
"idRestaurant": 1,
"restaurace":{
"idRestaurant": 1,
"name": "Don Julio",
"description": "La mejor parrilla para cualquier turista",
"sociální síť":[
{
"idSocialNetworkRestaurant": 1,
"idRestaurant": 1,
"idTypeSocialNetwork": 1,
"value": "www.donjulio.com.ar",
"typ":{
"idTypeSocialNetwork": 1,
"name": "Webové stránky",
"icon": "website_ic.jpg"
}
}
]
},
"idRangePriceBranch": 1,
"RangePrice": {
"idRangePriceBranch": 1,
"idBranchRestaurant": 1,
"minimum": 300,
"maximum": 600
},
"name": "Paraguay",
"fotografie":[
{
"idBranchPhoto": 4,
"idBranchRestaurant": 1,
"branch": null,
"idUser": 0,
"user": null,
"photo": "entradaDonJulio.jpg"
}
],
"kuchyně":[
{
"idCousine": 1,
"name": "Parrilla"
}
],
"Jídelní lístek":[
{
"idTypeMenu": 1,
"name": "Mediodia",
"idBranchRestaurant": 1,
"plates": null
},
{
"idTypeMenu": 2,
"name": "Noche",
"idBranchRestaurant": 1,
"plates": null
}
],
"filtr":[
{
"idTypeFilter": 2,
"name": "Family",
"icon": "family_ic.jpg"
}
],
"servis":[
{
"idService": 2,
"name": "Comida para celiacos"
},
{
"idService": 1,
"name": "Wifi"
}
],
"jízdní řád":[
{
"idTimetableBranch": 11,
"idBranchRestaurant": 1,
"idDay": 2,
"openingHour": "19 hs",
"closedHour": "24 h",
"den":{
"idDay": 2,
"name": "úterý"
}
},
{
"idTimetableBranch": 10,
"idBranchRestaurant": 1,
"idDay": 2,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 2,
"name": "úterý"
}
},
{
"idTimetableBranch": 9,
"idBranchRestaurant": 1,
"idDay": 1,
"openingHour": "19 hs",
"closedHour": "24 h",
"den":{
"idDay": 1,
"name": "pondělí"
}
},
{
"idTimetableBranch": 8,
"idBranchRestaurant": 1,
"idDay": 1,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 1,
"name": "pondělí"
}
},
{
"idTimetableBranch": 12,
"idBranchRestaurant": 1,
"idDay": 3,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 3,
"name": "středa"
}
},
{
"idTimetableBranch": 13,
"idBranchRestaurant": 1,
"idDay": 3,
"openingHour": "19 hs",
"closedHour": "24 h",
"den":{
"idDay": 3,
"name": "středa"
}
},
{
"idTimetableBranch": 14,
"idBranchRestaurant": 1,
"idDay": 4,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 4,
"name": "čtvrtek"
}
},
{
"idTimetableBranch": 15,
"idBranchRestaurant": 1,
"idDay": 4,
"openingHour": "19 hs",
"closedHour": "24 h",
"den":{
"idDay": 4,
"name": "čtvrtek"
}
},
{
"idTimetableBranch": 16,
"idBranchRestaurant": 1,
"idDay": 5,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 5,
"name": "pátek"
}
},
{
"idTimetableBranch": 17,
"idBranchRestaurant": 1,
"idDay": 5,
"openingHour": "19 hs",
"closedHour": "2 hs",
"den":{
"idDay": 5,
"name": "pátek"
}
}
],
"latitude": "87654322",
"longitude": "23456789",
"calification": null,
"averageFood": 4.0,
"averageService": 4.0,
"averageAmbience": 4.0,
"averageCalification": 4.0,
"povýšení":[
{
"idPromotion": 3,
"idTypePromotion": 2,
"code": "DIADELPADRE",
"name": "Dia Del Padre Regalo",
"startDate": "2017-06-26T00: 00: 00",
"expireDate": "2017-06-18T00: 00: 00",
"description": "postre de regalo",
"value": 100,
"typ":{
"idTypePromotion": 2,
"name": "Dárek"
}
}
]
},
{
"idBranchRestaurant": 2,
"idRestaurant": 2,
"restaurace":{
"idRestaurant": 2,
"name": "La Hormiga",
"description": "el lugar explota de gente y en especial de gente de ort",
"sociální síť":[
{
"idSocialNetworkRestaurant": 2,
"idRestaurant": 2,
"idTypeSocialNetwork": 2,
"value": "www.facebook.com/LaHormiga",
"typ":{
"idTypeSocialNetwork": 2,
"name": "Facebook",
"icon": "fb_ic.jpg"
}
}
]
},
"idRangePriceBranch": 1,
"RangePrice": {
"idRangePriceBranch": 1,
"idBranchRestaurant": 1,
"minimum": 300,
"maximum": 600
},
"name": "Ort",
"fotografie":[
{
"idBranchPhoto": 5,
"idBranchRestaurant": 2,
"branch": null,
"idUser": 0,
"user": null,
"photo": "entradaLaHormiga.jpg"
}
],
"kuchyně":[
{
"idCousine": 2,
"name": "Pizza"
}
],
"Jídelní lístek":[
{
"idTypeMenu": 3,
"name": "Mediodia",
"idBranchRestaurant": 2,
"plate": null
}
],
"filtr":[
{
"idTypeFilter": 1,
"name": "Se slevou",
"icon": "discount_ic.jpg"
}
],
"servis":[
{
"idService": 3,
"name": "Aire acondicionado"
},
{
"idService": 1,
"name": "Wifi"
}
],
"jízdní řád":[
{
"idTimetableBranch": 18,
"idBranchRestaurant": 2,
"idDay": 6,
"openingHour": "11 hodin",
"closedHour": "15 hodin",
"den":{
"idDay": 6,
"name": "sobota"
}
},
{
"idTimetableBranch": 19,
"idBranchRestaurant": 2,
"idDay": 7,
"openingHour": "11 hodin",
"closedHour": "15 hodin",
"den":{
"idDay": 7,
"name": "neděle"
}
}
],
"latitude": "234567897",
"longitude": "123456789",
"calification": null,
„averageFood“: 5,0,
"averageService": 5.0,
"averageAmbience": 5.0,
"averageCalification": 5.0,
"povýšení":[
]
},
{
"idBranchRestaurant": 3,
"idRestaurant": 3,
"restaurace":{
"idRestaurant": 3,
"name": "paja rota",
"description": "La mejor parrilla de ramosmejia ",
"sociální síť":[
{
"idSocialNetworkRestaurant": 3,
"idRestaurant": 3,
"idTypeSocialNetwork": 3,
"value": "twitter.com/Pajarota",
"typ":{
"idTypeSocialNetwork": 3,
"name": "Twitter",
"icon": "ic_twitter.png"
}
}
]
},
"idRangePriceBranch": 3,
"RangePrice": {
"idRangePriceBranch": 3,
"idBranchRestaurant": 3,
"minimum": 50,
"maximum": 250
},
"name": "Ramos MEjia",
"fotografie":[
{
"idBranchPhoto": 6,
"idBranchRestaurant": 3,
"branch": null,
"idUser": 0,
"user": null,
"photo": "EntradaPajaRota.jpg"
}
],
"kuchyně":[
{
"idCousine": 1,
"name": "Parrilla"
}
],
"Jídelní lístek":[
{
"idTypeMenu": 4,
"name": "Mediodia",
"idBranchRestaurant": 3,
"plate": null
},
{
"idTypeMenu": 5,
"name": "Noche",
"idBranchRestaurant": 3,
"plate": null
}
],
"filtr":[
{
"idTypeFilter": 2,
"name": "Family",
"icon": "family_ic.jpg"
}
],
"servis":[
{
"idService": 1,
"name": "Wifi"
},
{
"idService": 4,
"name": "Carta de braille"
}
],
"jízdní řád":[
{
"idTimetableBranch": 20,
"idBranchRestaurant": 3,
"idDay": 5,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 5,
"name": "pátek"
}
},
{
"idTimetableBranch": 21,
"idBranchRestaurant": 3,
"idDay": 5,
"openingHour": "19 hs",
"closedHour": "2 hs",
"den":{
"idDay": 5,
"name": "pátek"
}
},
{
"idTimetableBranch": 22,
"idBranchRestaurant": 3,
"idDay": 6,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 6,
"name": "sobota"
}
},
{
"idTimetableBranch": 23,
"idBranchRestaurant": 3,
"idDay": 6,
"openingHour": "19 hs",
"closedHour": "2 hs",
"den":{
"idDay": 6,
"name": "sobota"
}
},
{
"idTimetableBranch": 24,
"idBranchRestaurant": 3,
"idDay": 7,
"openingHour": "12 hodin",
"closedHour": "16 hs",
"den":{
"idDay": 7,
"name": "neděle"
}
}
],
"latitude": "12345678",
"longitude": "87654321",
"calification": null,
„averageFood“: 5,0,
"averageService": 5.0,
"averageAmbience": 5.0,
"averageCalification": 5.0,
"povýšení":[
]
},
{
"idBranchRestaurant": 4,
"idRestaurant": 4,
"restaurace":{
"idRestaurant": 4,
"name": "la espiga",
"description": "el mejor lugar para comer pastas",
"sociální síť":[
{
"idSocialNetworkRestaurant": 4,
"idRestaurant": 4,
"idTypeSocialNetwork": 4,
"value": "instagram.com/laespiga",
"typ":{
"idTypeSocialNetwork": 4,
"name": "Instagram",
"icon": "ic_Instagram.png"
}
}
]
},
"idRangePriceBranch": 4,
"RangePrice": {
"idRangePriceBranch": 4,
"idBranchRestaurant": 4,
"minimum": 80,
"maximum": 150
},
"name": "Almagro",
"fotografie":[
{
"idBranchPhoto": 7,
"idBranchRestaurant": 4,
"branch": null,
"idUser": 0,
"user": null,
"photo": "EntradaLaEspiga.jpg"
}
],
"kuchyně":[
{
"idCousine": 4,
"name": "Těstoviny"
}
],
"Jídelní lístek":[
{
"idTypeMenu": 6,
"name": "Tarde",
"idBranchRestaurant": 4,
"plate": null
}
],
"filtr":[
{
"idTypeFilter": 1,
"name": "Se slevou",
"icon": "discount_ic.jpg"
}
],
"servis":[
{
"idService": 1,
"name": "Wifi"
},
{
"idService": 3,
"name": "Aire acondicionado"
}
],
"jízdní řád":[
{
"idTimetableBranch": 26,
"idBranchRestaurant": 4,
"idDay": 1,
"openingHour": "16 hs",
"closedHour": "19 hs",
"den":{
"idDay": 1,
"name": "pondělí"
}
},
{
"idTimetableBranch": 27,
"idBranchRestaurant": 4,
"idDay": 2,
"openingHour": "16 hs",
"closedHour": "19 hs",
"den":{
"idDay": 2,
"name": "úterý"
}
},
{
"idTimetableBranch": 28,
"idBranchRestaurant": 4,
"idDay": 3,
"openingHour": "16 hs",
"closedHour": "19 hs",
"den":{
"idDay": 3,
"name": "středa"
}
},
{
"idTimetableBranch": 29,
"idBranchRestaurant": 4,
"idDay": 4,
"openingHour": "16 hs",
"closedHour": "19 hs",
"den":{
"idDay": 4,
"name": "čtvrtek"
}
},
{
"idTimetableBranch": 30,
"idBranchRestaurant": 4,
"idDay": 5,
"openingHour": "16 hs",
"closedHour": "19 hs",
"den":{
"idDay": 5,
"name": "pátek"
}
}
],
"latitude": "87657467",
"longitude": "45254567",
"calification": null,
„averageFood“: 5,0,
"averageService": 5.0,
"averageAmbience": 5.0,
"averageCalification": 5.0,
"povýšení":[
]
}
]
Třída ParseQuery
private String server = "http://appmorfando.azurewebsites.net/api/";
ParsingObjects parse = new ParsingObjects ();
// Dotaz na větve seznamu
privátní větve ArrayList  = nový ArrayList  ();
public ArrayList  getAllBranch (int limit, int offset) {
new BranchGetAll (). execute ("branch /", limit + "", offset + "");
zpětné větve;
}
soukromá třída BranchGetAll rozšiřuje AsyncTask > {
protected void onPostExecute (ArrayList  datos) {
super.onPostExecute (data);
pobočky = data;
}
@ Přepis
Protected ArrayList  doInBackground (String ... parametry) {
Řetězec url = parametry [0] + parametry [1] + "/" + parametry [2];
ArrayList  branchList = nový ArrayList  ();
OkHttpClient klient = nový OkHttpClient ();
Žádost o požadavek = nový Request.Builder ()
.url (server + url)
.stavět();
Řetězec resultado;
Snaž se {
Odezva odpověď = client.newCall (request) .execute (); // Llamo al API Rest servicio1 en ejemplo.com
resultado = response.body (). string ();
} chytit (IOException e) {
Log.d ("Chyba", e.getMessage ()); // Chyba de Network
vrátit null;
}
Snaž se{
JSONArray jsonBranch = nový JSONArray (resultado);
pro (int i = 0; i  listBranches;
public View onCreateView (LayoutInflater inflater, ViewGroup group, Bundle data) {
Zobrazit toReturn;
toReturn = inflater.inflate (R.layout.frag_restaurant_lv, group, false);
main = (MainActivity) getActivity ();
pq = new ParseQuery ();
restaurantItems = (ListView) toReturn.findViewById (R.id.lvRestaurantItems);
// Zde bude null, takže velikost adaptéru je 0
listBranches = pq.getAllBranch (10,0);
adaptér = nový lvRestaurantAdapter (listBranches, main);
restaurantItems.setAdapter (adaptér);
restaurantItems.setOnItemClickListener (toto);
návrat doReturn;
}
@ Přepis
public void onItemClick (AdapterView  parent, View view, int position, long id) {
int idBranch = adapter.getId (pozice);
main.BranchSelected (idBranch);
}
}