无法从json获得响应

Question

我正在尝试从json获得响应，但出现空指针错误

这是我的改造界面

public interface RequestGeo {

@Headers("user-key: mykey")
@GET("geocode?lat=49.195061&lon=16.606836")
Call<JSONResponse> getJSON();
}

在我的MainActivity上，我得到了这段代码

private void loadJSON() {
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("https://developers.zomato.com/api/v2.1/")
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    RequestGeo request = retrofit.create(RequestGeo.class);
    Call<JSONResponse> call = request.getJSON();
    call.enqueue(new Callback<JSONResponse>() {
        @Override
        public void onResponse(Call<JSONResponse> call, Response<JSONResponse> response) {

            JSONResponse jsonResponse = response.body();
            geoCodeData = new ArrayList<>(Arrays.asList(jsonResponse.getGeocode()));
            adapter = new RestaurantListAdapter(geoCodeData);
            recyclerView.setAdapter(adapter);

        }

        @Override
        public void onFailure(Call<JSONResponse> call, Throwable t) {
            Log.d("Error", t.getMessage());
        }
    });
}

nullpointerexception错误在这里

geoCodeData = new ArrayList<>(Arrays.asList(jsonResponse.getGeocode()));

这是我的jsonResponse.java文件

public class JSONResponse {

    private Geocode[] geocode;

    public Geocode[] getGeocode(){
        return geocode;
    }
}

更新

Geocode.java类，在其中我完全按照要获取的json对象编写变量（有更多但我不想要它们）。

@Entity
public class Geocode {


@NonNull
@PrimaryKey private String title;
private String latitude;
private String longitude;
private String city_name;


public Geocode(String title, String latitude, String longitude, String city_name) {
    this.title = title;
    this.latitude = latitude;
    this.longitude = longitude;
    this.city_name = city_name;
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public String getLatitude() {
    return latitude;
}

public void setLatitude(String latitude) {
    this.latitude = latitude;
}

public String getLongitude() {
    return longitude;
}

public void setLongitude(String longitude) {
    this.longitude = longitude;
}

public String getCity_name() {
    return city_name;
}

public void setCity_name(String city_name) {
    this.city_name = city_name;
}
}