文本返回null时，使用改型进行分析

Question

我试图解析一个简单的json（下面提到），并将值设置为TextViews。我正在使用改型和GSON转换器。但是当将值设置为textviw时，它将返回null。我已经将值解析到RecycerView，这非常容易。但在简单的回答中，我可能犯了一些小错误，但却找不到。

我们将不胜感激。

public interface ItemDescriptionInterface {
    @GET("getProductDetailByProductId?ProductId=3")
    Call<JsonObject> ITEM_DESCRIPTION_RESPONSE_CALL();
}

    Retrofit retrofit2 = new Retrofit.Builder()
            .baseUrl(BASE_URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();


    ItemDescriptionInterface apiService = retrofit2.create(ItemDescriptionInterface.class);
    Call<JsonObject> jsonCall = apiService.ITEM_DESCRIPTION_RESPONSE_CALL();
    jsonCall.enqueue(new Callback<JsonObject>() {
        @Override
        public void onResponse(Call<JsonObject> call, Response<JsonObject> response) {

            String jsonString = response.body().toString();
            Gson gson = new Gson();
            ItemDescriptionModel model = gson.fromJson(jsonString, ItemDescriptionModel.class);
            price.setText(model.getResult().getActualPrice());//Here its not getting 

        }
        @Override
        public void onFailure(Call<JsonObject> call, Throwable t) {
            String msg = (t.getMessage() == null) ? "Login failed!" : t.getMessage();
            Log.d("descriptionofproduct", msg);
        }
    });

{
  "status": "Success",
  "response_code": 200,
  "result": [
    {
      "PId": "3",
      "ProductId": "3",
      "VendorId": "admin",
      "ProductName": "Golden Green",
      "ProductAlias": "golden-green-full-rim-",
      "MarketPrice": "500",
      "ActualPrice": "450",
      "PurchasePrice": "450",
      "Style": "3",
      "DefaultImage_url": "http:\/\/lensclone.tk\/test\.png"
    }
  ]
}

public class ItemDescriptionModel {

@SerializedName("ActualPrice")
private String price;

@SerializedName("ProductDetails")
private String productDetails;

@SerializedName("DefaultImage_url")
private String imgurl;

@SerializedName("ProductName")
private String ProductName;

public ItemDescriptionModel(String price, String productDetails, String imgurl, String productName) {
    this.price = price;
    this.productDetails = productDetails;
    this.imgurl = imgurl;
    ProductName = productName;
}

public String getPrice() {
    return price;
}

public void setPrice(String price) {
    this.price = price;
}

public String getProductDetails() {
    return productDetails;
}

public void setProductDetails(String productDetails) {
    this.productDetails = productDetails;
}

public String getImgurl() {
    return imgurl;
}

public void setImgurl(String imgurl) {
    this.imgurl = imgurl;
}

public String getProductName() {
    return ProductName;
}

public void setProductName(String productName) {
    ProductName = productName;
}

如果我遗漏了什么，请告诉我。

Answer 1

改变这些东西。

public interface ItemDescriptionInterface {
    @GET("getProductDetailByProductId?ProductId=3")
    Call<ItemDescriptionModel> ITEM_DESCRIPTION_RESPONSE_CALL();
}
        Call<ItemDescriptionModel> itemDescriptionModelCall= apiService.ITEM_DESCRIPTION_RESPONSE_CALL();
    itemDescriptionModelCall.enqueue(new Callback<ItemDescriptionModel>() {
        @Override
        public void onResponse(Call<ItemDescriptionModel> call, retrofit2.Response<ItemDescriptionModel> response) {
            if (response!=null && response.isSuccessful() && response.body()!=null){
                String prince=response.body().getPrice();
            }
        }

        @Override
        public void onFailure(Call<ItemDescriptionModel> call, Throwable t) {

        }
    });