Retrofit 2.0 + GSON无法为接口调用无参数构造函数 [英] Retrofit 2.0 + GSON Unable to invoke no-args constructor for interface

问题描述

我在我的应用中使用Retrofit 2.0.一切都很好，但是当我开始不带参数的请求时，GSON返回:

I'm using Retrofit 2.0 in my app. Everything was quite good, but when I started request with no args, GSON returns:

Unable to invoke no-args constructor for interface
com.example.project.API.GetPhones. Register an InstanceCreator
with Gson for this type may fix this problem.

这是我的API接口:

public interface GetPhones {
    @GET("phones.php")
    Call<ArrayList<GetPhones>> getPhones();
}

和模型类:

public class GetPhones {
    int id;
    char[] iso;
    String name;
    String phone_1;
    String phone_2;
    String phone_3;
}

和代码片段:

Retrofit retrofit = new Retrofit.Builder()
         .baseUrl(URL_API)
         .client(SSLSuppressClient.trustcert())
         .addConverterFactory(GsonConverterFactory.create())
         .build();
GetPhones getPhonesInfo = retrofit.create(GetPhones.class);
Call<GetPhones> call = getPhonesInfo.getPhones();
call.enqueue(new Callback<GetPhones>() {
    @Override
    public void onResponse(Response<GetPhones> response, Retrofit retrofit) {
        Toast.makeText(getActivity(), "Success!", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onFailure(Throwable t) {
        Toast.makeText(getActivity(), "Failure!", Toast.LENGTH_SHORT).show();
        Log.d("LOG", t.getMessage());
                }
    });

我试图为GetPhones.class构造无参数的构造函数，但它没有任何改变.

I've tried to make no-args constructor for GetPhones.class, but it doesn't change anything.

推荐答案

接口(interface GetPhones)和模型类(class GetPhones)的名称相同.

You have the same name for interface (interface GetPhones) and model class (class GetPhones).

我认为您正在此行中使用界面:

I think you are using interface in this line:

Call<ArrayList<GetPhones>> getPhones();

但这应该是您的模型类.检查导入部分是否有此名称，或重命名模型类以确保您没有将其混用.

But it should be your model class. Check import section for it or rename model class to be sure that you are not mixing it.

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