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zu bekommen Ich mache eine Anwendung und ich benutze Volley, um die Daten von einer API zu bekommen, aber in der Request.Method.GET gibt es mir einen Fehler, der sagt "inkompatible Typen: int kann nicht konvertiert werden zum String ". Hier können u die Methode siehe:Inkompatible Typen mit Volley, um JSON in Android
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.google.gson.JsonObject;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* A simple {@link Fragment} subclass.
*/
public class NegociosFragment extends Fragment {
public RecyclerView recyclerView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
List<Empresas> empresas = rellenar();
RequestQueue requestQueue = Volley.newRequestQueue(getContext());
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_negocios,container,false);
//1. get a reference to recyclerView
recyclerView = (RecyclerView) view.findViewById(R.id.reciclador);
//2. set layoutManager
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
//3. create an adapter
EmpresasAdapter adapter = new EmpresasAdapter(getActivity(), /*Empresas2.getEmpresas()*/empresas);
//4. set adapter
recyclerView.setAdapter(adapter);
//5. set item animator to DefaultAnimator
recyclerView.setItemAnimator(new DefaultItemAnimator());
return view;
}
private List<Empresas> rellenar() {
final List<Empresas> empresas2 = null ;
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, "my url of the API",
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("results");
for(int i=0; i<jsonArray.length(); i++){
JSONObject objeto = jsonArray.getJSONObject(i);
int id = objeto.getInt("id");
String data1 = objeto.getString("data1");
String data2 = objeto.getString("data2");
String data3 = objeto.getString("data3");
String data4 = objeto.getString("data4");
String data5 = objeto.getString("data5");
String data6 = objeto.getString("data6");
String data7 = objeto.getString("data7");
String data8 = objeto.getString("data8");
String data9 = objeto.getString("data9");
Double double1 = objeto.getDouble("double1");
Double double2 = objeto.getDouble("double2");
String data10 = objeto.getString("data10");
String data11 = objeto.getString("data11");
String data12 = objeto.getString("data12");
String data13 = objeto.getString("data13");
String data14 = objeto.getString("data14");
String data15 = objeto.getString("data15");
String data16 = objeto.getString("data16");
String data17 = objeto.getString("data17");
String data18 = objeto.getString("data18");
String data19 = objeto.getString("data19");
String data20 = objeto.getString("data20");
String data21 = objeto.getString("data21");
String data22 = objeto.getString("data22");
String data23 = objeto.getString("data23");
String data24 = objeto.getString("data24");
String data25 = objeto.getString("data25");
String data26 = objeto.getString("data26");
String data27 = objeto.getString("data27");
//change null to default information
data1 = comprobarString(data1);
data2 = comprobarString(data2);
data3 = comprobarString(data3);
data4 = comprobarString(data4);
data5 = comprobarString(data5);
data6 = comprobarString(data6);
data7 = comprobarString(data7);
data8 = comprobarString(data8);
data9 = comprobarString(data9);
double1 = comprobarDouble(double1);
double2 = comprobarDouble(double2);
data10 = comprobarString(data10);
data11 = comprobarString(data11);
data12 = comprobarString(data12);
data13 = comprobarString(data13);
data14 = comprobarString(data14);
data15 = comprobarString(data15);
data16 = comprobarString(data16);
data17 = comprobarString(data17);
data18 = comprobarString(data18);
data19 = comprobarString(data19);
data20 = comprobarString(data20);
data21 = comprobarString(data21);
data22 = comprobarString(data22);
data23 = comprobarString(data23);
data24 = comprobarString(data24);
data25 = comprobarString(data25);
data26 = comprobarString(data26);
data27 = comprobarString(data27);
empresas2.add(new Empresas(id, data1, data2, data3,
data4, data5, data6, data7,
data8, data9, double1, double2, data10, data11,
data12, data13, data14, data15, data16, data17, data18, data19,
data20, data21, data22, data23, data24, data25, data26, data27));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener(){
@Override
public void onErrorResponse(VolleyError error){
}
}
);
requestQueue.add(jsonObjectRequest);
return empresas2;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
Double comprobarDouble(Double num){
Double fin = null;
if(num==null){
fin=0D;
}
else if(num!=null){
fin=num;
}
return fin;
}
String comprobarString(String txt){
String text;
if (txt==null){
text="No disponible";
}
else if(txt.equals("null")){
text="No disponible";
}
else{
text=txt;
}
return text;
}
}
Dies ist der Konstruktor von Empresas:
public class Empresas {
int id;
String data1;
String data2;
String data3;
String data4;
String data5
String data6;
String data7;
String data8;
String data9;
Double double1;
Double double2;
String data10;
String data11;
String data12;
String data13;
String data14;
String data15;
String data16;
String data17;
String data18;
String data19;
String data20;
String data21;
String data22;
String data23;
String data24;
String data25;
String data26;
String data27;
public Empresas(int id, String data1,String data2,String data3,String data4,String data5,String data6, String data7,
String data8, String data9, Double double1, Double double2, String data10, String data11, String data12, String data13,
String data14, String data15, String data16, String data17, String data18, String data19, String data20, String data21, String data22,
String data23, String data24, String data25, String data26, String data27){
this.id=id;
this.data1=data1;
this.data2=data2;
this.data3=data3;
this.data4=data4;
this.data5=data5;
this.data6=data6;
this.data7=data7;
this.data8=data8;
this.data9=data9;
this.double1=latitud;
this.double2=longitud;
this.data10=data10;
this.data11=data11;
this.data12=data12;
this.data13=data13;
this.data14=data14;
this.data15=data15;
this.data16=data16;
this.data17=data17;
this.data18=data18;
this.data19=data19;
this.data20=data20;
this.data21=data21;
this.data22=data22;
this.data23=data23;
this.data24=data24;
this.data25=data25;
this.data26=data26;
this.data27=data27;
}
}
Dies ist die Struktur des JSON
{
status: "OK",
code: 0,
message: "",
results: [
{
id: 42,
data1: "data",
data2: "data",
data3: "data",
data4: "data",
data5: "data",
data6: "data",
data7: "data",
data8: "data",
data9: "data",
double1: double1,
double2: double2,
data10: "data",
data11: "data",
data12: "data",
data13: "data",
data14: "data",
data15: "data",
data16: "data",
data17: "data",
data18: "data",
data19: "data",
data20: "data",
data21: "data",
data22: "data",
data23: "data",
data24: "data",
data25: "data",
data26: "data",
data27: "data"
},
Die Linie, wo der Fehler bewegt Sie bei 
Stacktrace 
Dies ist der neue Fehler: 
Können Sie Ihren Modellkonstruktor posten? – Nisarg
der Konstrukteur von Empresas? – Mihawk
Ja \t der Konstruktor von Empresas – Nisarg