Başka bir Sınıftan AsyncTask'ı çağırın ve boş Android Studio'ya dönün

ParseQuerys Class'tan bir yöntem aracılığıyla bir AsyncTask çağırmaya çalışıyorum, bu bilgileri Parçam lvRestaurantFrag'ın ListView'ında kullanmak için. Sorun, yöntemin, AsyncTask onPostExecute'a ulaşmaması nedeniyle null döndürmesidir. Nasıl düzeltebileceğimi bilmiyorum.
Burada kodumu bırakıyorum:
JSON
API Bağlantısı
[
{
"idBranchRestaurant": 1,
"idRestaurant": 1,
"restoran":{
"idRestaurant": 1,
"name": "Don Julio",
"description": "La mejor parrilla para cualquier turista",
"sosyal ağ":[
{
"idSocialNetworkRestaurant": 1,
"idRestaurant": 1,
"idTypeSocialNetwork": 1,
"değer": "www.donjulio.com.ar",
"tür": {
"idTypeSocialNetwork": 1,
"name": "Web sitesi",
"icon": "website_ic.jpg"
}
}
]
},
"idRangePriceBranch": 1,
"Aralık Fiyatı": {
"idRangePriceBranch": 1,
"idBranchRestaurant": 1,
"minimum": 300,
"maksimum": 600
},
"name": "Paraguay",
"Fotoğraf":[
{
"idBranchPhoto": 4,
"idBranchRestaurant": 1,
"şube": boş,
"idUser": 0,
"kullanıcı": boş,
"photo": "entradaDonJulio.jpg"
}
],
"yerel mutfak":[
{
"idCousine": 1,
"name": "Parrilla"
}
],
"Menü":[
{
"idTypeMenu": 1,
"name": "Mediodia",
"idBranchRestaurant": 1,
"tabaklar": boş
},
{
"idTypeMenu": 2,
"name": "Noche",
"idBranchRestaurant": 1,
"tabaklar": boş
}
],
"filtre": [
{
"idTypeFilter": 2,
"name": "Aile",
"icon": "family_ic.jpg"
}
],
"hizmet":[
{
"idService": 2,
"name": "Comida para celiacos"
},
{
"idService": 1,
"name": "Kablosuz"
}
],
"masa saati":[
{
"idTimetableBranch": 11,
"idBranchRestaurant": 1,
"idDay": 2,
"OpeningHour": "19 hs",
"closeHour": "24 sa",
"gün":{
"idDay": 2,
"name": "Salı"
}
},
{
"idTimetableBranch": 10,
"idBranchRestaurant": 1,
"idDay": 2,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 2,
"name": "Salı"
}
},
{
"idTimetableBranch": 9,
"idBranchRestaurant": 1,
"idDay": 1,
"OpeningHour": "19 hs",
"closeHour": "24 sa",
"gün":{
"idDay": 1,
"name": "Pazartesi"
}
},
{
"idTimetableBranch": 8,
"idBranchRestaurant": 1,
"idDay": 1,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 1,
"name": "Pazartesi"
}
},
{
"idTimetableBranch": 12,
"idBranchRestaurant": 1,
"idDay": 3,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 3,
"name": "Çarşamba"
}
},
{
"idTimetableBranch": 13,
"idBranchRestaurant": 1,
"idDay": 3,
"OpeningHour": "19 hs",
"closeHour": "24 saat",
"gün":{
"idDay": 3,
"name": "Çarşamba"
}
},
{
"idTimetableBranch": 14,
"idBranchRestaurant": 1,
"idDay": 4,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 4,
"name": "Perşembe"
}
},
{
"idTimetableBranch": 15,
"idBranchRestaurant": 1,
"idDay": 4,
"OpeningHour": "19 hs",
"closeHour": "24 saat",
"gün":{
"idDay": 4,
"name": "Perşembe"
}
},
{
"idTimetableBranch": 16,
"idBranchRestaurant": 1,
"idDay": 5,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 5,
"name": "Cuma"
}
},
{
"idTimetableBranch": 17,
"idBranchRestaurant": 1,
"idDay": 5,
"OpeningHour": "19 hs",
"closeHour": "2 hs",
"gün":{
"idDay": 5,
"name": "Cuma"
}
}
],
"enlem": "87654322",
"boylam": "23456789",
"kalifikasyon": boş,
"averageFood": 4.0,
"averageService": 4.0,
"averageAmbience": 4.0,
"averageCalification": 4.0,
"promosyon": [
{
"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",
"değer": 100,
"tür": {
"idTypePromotion": 2,
"name": "Hediye"
}
}
]
},
{
"idBranchRestaurant": 2,
"idRestaurant": 2,
"restoran":{
"idRestaurant": 2,
"name": "La Hormiga",
"description": "el lugar explota de gente y en especial de gente de ort",
"sosyal ağ":[
{
"idSocialNetworkRestaurant": 2,
"idRestaurant": 2,
"idTypeSocialNetwork": 2,
"değer": "www.facebook.com/LaHormiga",
"tür": {
"idTypeSocialNetwork": 2,
"name": "Facebook",
"icon": "fb_ic.jpg"
}
}
]
},
"idRangePriceBranch": 1,
"Aralık Fiyatı": {
"idRangePriceBranch": 1,
"idBranchRestaurant": 1,
"minimum": 300,
"maksimum": 600
},
"name": "Ort",
"Fotoğraf":[
{
"idBranchPhoto": 5,
"idBranchRestaurant": 2,
"şube": boş,
"idUser": 0,
"kullanıcı": boş,
"photo": "entradaLaHormiga.jpg"
}
],
"yerel mutfak":[
{
"idCousine": 2,
"name": "Pizza"
}
],
"Menü":[
{
"idTypeMenu": 3,
"name": "Mediodia",
"idBranchRestaurant": 2,
"tabaklar": boş
}
],
"filtre": [
{
"idTypeFilter": 1,
"name": "İndirimli",
"icon": "indirimli_ic.jpg"
}
],
"hizmet":[
{
"idService": 3,
"name": "Aire acondicionado"
},
{
"idService": 1,
"name": "Kablosuz"
}
],
"masa saati":[
{
"idTimetableBranch": 18,
"idBranchRestaurant": 2,
"idDay": 6,
"OpeningHour": "11 hs",
"closeHour": "15 sa",
"gün":{
"idDay": 6,
"name": "Cumartesi"
}
},
{
"idTimetableBranch": 19,
"idBranchRestaurant": 2,
"idDay": 7,
"OpeningHour": "11 hs",
"closeHour": "15 hs",
"gün":{
"idDay": 7,
"name": "Pazar"
}
}
],
"enlem": "234567897",
"boylam": "123456789",
"kalifikasyon": boş,
"AverageFood": 5.0,
"averageService": 5.0,
"averageAmbience": 5.0,
"averageCalification": 5.0,
"promosyon": [
]
},
{
"idBranchRestaurant": 3,
"idRestaurant": 3,
"restoran":{
"idRestaurant": 3,
"name": "paja rota",
"description": "La mejor parrilla de ramosmejia ",
"sosyal ağ":[
{
"idSocialNetworkRestaurant": 3,
"idRestaurant": 3,
"idTypeSocialNetwork": 3,
"değer": "twitter.com/Pajarota",
"tür": {
"idTypeSocialNetwork": 3,
"name": "Twitter",
"icon": "ic_twitter.png"
}
}
]
},
"idRangePriceBranch": 3,
"Aralık Fiyatı": {
"idRangePriceBranch": 3,
"idBranchRestaurant": 3,
"minimum": 50,
"maksimum": 250
},
"name": "Ramos MEjia",
"Fotoğraf":[
{
"idBranchPhoto": 6,
"idBranchRestaurant": 3,
"şube": boş,
"idUser": 0,
"kullanıcı": boş,
"photo": "EntradaPajaRota.jpg"
}
],
"yerel mutfak":[
{
"idCousine": 1,
"name": "Parrilla"
}
],
"Menü":[
{
"idTypeMenu": 4,
"name": "Mediodia",
"idBranchRestaurant": 3,
"tabaklar": boş
},
{
"idTypeMenu": 5,
"name": "Noche",
"idBranchRestaurant": 3,
"tabaklar": boş
}
],
"filtre": [
{
"idTypeFilter": 2,
"name": "Aile",
"icon": "family_ic.jpg"
}
],
"hizmet":[
{
"idService": 1,
"name": "Kablosuz"
},
{
"idService": 4,
"name": "Carta de braille"
}
],
"masa saati":[
{
"idTimetableBranch": 20,
"idBranchRestaurant": 3,
"idDay": 5,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 5,
"name": "Cuma"
}
},
{
"idTimetableBranch": 21,
"idBranchRestaurant": 3,
"idDay": 5,
"OpeningHour": "19 hs",
"closeHour": "2 hs",
"gün":{
"idDay": 5,
"name": "Cuma"
}
},
{
"idTimetableBranch": 22,
"idBranchRestaurant": 3,
"idDay": 6,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 6,
"name": "Cumartesi"
}
},
{
"idTimetableBranch": 23,
"idBranchRestaurant": 3,
"idDay": 6,
"OpeningHour": "19 hs",
"closeHour": "2 hs",
"gün":{
"idDay": 6,
"name": "Cumartesi"
}
},
{
"idTimetableBranch": 24,
"idBranchRestaurant": 3,
"idDay": 7,
"OpeningHour": "12 hs",
"closeHour": "16 hs",
"gün":{
"idDay": 7,
"name": "Pazar"
}
}
],
"enlem": "12345678",
"boylam": "87654321",
"kalifikasyon": boş,
"AverageFood": 5.0,
"averageService": 5.0,
"averageAmbience": 5.0,
"averageCalification": 5.0,
"promosyon": [
]
},
{
"idBranchRestaurant": 4,
"idRestaurant": 4,
"restoran":{
"idRestaurant": 4,
"name": "la espiga",
"description": "el mejor lugar para comer makarnaları",
"sosyal ağ":[
{
"idSocialNetworkRestaurant": 4,
"idRestaurant": 4,
"idTypeSocialNetwork": 4,
"değer": "instagram.com/laespiga",
"tür": {
"idTypeSocialNetwork": 4,
"name": "Instagram",
"icon": "ic_Instagram.png"
}
}
]
},
"idRangePriceBranch": 4,
"Aralık Fiyatı": {
"idRangePriceBranch": 4,
"idBranchRestaurant": 4,
"minimum": 80,
"maksimum": 150
},
"name": "Almagro",
"Fotoğraf":[
{
"idBranchPhoto": 7,
"idBranchRestaurant": 4,
"şube": boş,
"idUser": 0,
"kullanıcı": boş,
"photo": "EntradaLaEspiga.jpg"
}
],
"yerel mutfak":[
{
"idCousine": 4,
"name": "Makarna"
}
],
"Menü":[
{
"idTypeMenu": 6,
"name": "Tarde",
"idBranchRestaurant": 4,
"tabaklar": boş
}
],
"filtre": [
{
"idTypeFilter": 1,
"name": "İndirimli",
"icon": "indirimli_ic.jpg"
}
],
"hizmet":[
{
"idService": 1,
"name": "Kablosuz"
},
{
"idService": 3,
"name": "Aire acondicionado"
}
],
"masa saati":[
{
"idTimetableBranch": 26,
"idBranchRestaurant": 4,
"idDay": 1,
"OpeningHour": "16 hs",
"closeHour": "19 hs",
"gün":{
"idDay": 1,
"name": "Pazartesi"
}
},
{
"idTimetableBranch": 27,
"idBranchRestaurant": 4,
"idDay": 2,
"OpeningHour": "16 hs",
"closeHour": "19 hs",
"gün":{
"idDay": 2,
"name": "Salı"
}
},
{
"idTimetableBranch": 28,
"idBranchRestaurant": 4,
"idDay": 3,
"OpeningHour": "16 hs",
"closeHour": "19 hs",
"gün":{
"idDay": 3,
"name": "Çarşamba"
}
},
{
"idTimetableBranch": 29,
"idBranchRestaurant": 4,
"idDay": 4,
"OpeningHour": "16 hs",
"closeHour": "19 hs",
"gün":{
"idDay": 4,
"name": "Perşembe"
}
},
{
"idTimetableBranch": 30,
"idBranchRestaurant": 4,
"idDay": 5,
"OpeningHour": "16 hs",
"closeHour": "19 hs",
"gün":{
"idDay": 5,
"name": "Cuma"
}
}
],
"enlem": "87657467",
"boylam": "45254567",
"kalifikasyon": boş,
"AverageFood": 5.0,
"averageService": 5.0,
"averageAmbience": 5.0,
"averageCalification": 5.0,
"promosyon": [
]
}
]
ParseQuery Sınıfı
private String sunucusu = "http://appmorfando.azurewebsites.net/api/";
ParsingObjects parse = new ParsingObjects ();
// Liste Dalları için Sorgu
private ArrayList  dalları = new ArrayList  ();
public ArrayList  getAllBranch (int limit, int offset) {
new BranchGetAll (). execute ("branch /", limit + "", offset + "");
şubeleri iade etmek;
}
özel sınıf BranchGetAll, AsyncTask > {
korumalı void onPostExecute (ArrayList  datos) {
super.onPostExecute (datos);
dallar = datos;
}
@Override
korumalı ArrayList  doInBackground (String ... parametros) {
Dize url = parametreler [0] + parametreler [1] + "/" + parametreler [2];
ArrayList  branchList = new ArrayList  ();
OkHttpClient istemci = yeni OkHttpClient ();
İstek isteği = yeni İstek Oluşturucu ()
.url (sunucu + url)
.inşa etmek();
String sonucu;
Deneyin {
Yanıt yanıtı = client.newCall (istek) .execute (); // Llamo al API Rest servicio1 en ejemplo.com
resultado = response.body (). string ();
} catch (IOException e) {
Log.d ("Hata", e.getMessage ()); // Ağ hatası
boş döndür;
}
Deneyin{
JSONArray jsonBranch = new JSONArray (resultado);
for (int i = 0; i  listBranches;
public View onCreateView (LayoutInflater inflater, ViewGroup grubu, Bundle verileri) {
Geri Dönüş için Görüntüle;
toReturn = inflater.inflate (R.layout.frag_restaurant_lv, group, false);
main = (MainActivity) getActivity ();
pq = new ParseQuery ();
restaurantItems = (ListView) toReturn.findViewById (R.id.lvRestaurantItems);
// Burada boş değer yani adaptör boyutu 0 olur
listBranches = pq.getAllBranch (10,0);
adaptör = yeni lvRestaurantAdapter (listBranches, ana);
restaurantItems.setAdapter (adaptör);
restaurantItems.setOnItemClickListener (bu);
Geri dönüşe dönüş;
}
@Override
public void onItemClick (AdapterView  parent, View view, int position, long id) {
int idBranch = bağdaştırıcı.getId (konum);
main.BranchSelected (idBranch);
}
}