Java – Android retro fit: missing method body or declaration abstraction

I'm writing an Android application that will use retrofit to make API requests

I have such a helper class:

public class ApiService {
    public static final String TAG = ApiService.class.getSimpleName();

    public static final String BASE_URL = "https://myapiurl.com";

    public static void testApi(){
        ApiEndpointInterface apiService = prepareService();
        apiService.ping(new Callback<Response>() {
            @Override
            public void success(Response apiResponse,retrofit.client.Response response) {
                Log.e(TAG,apiResponse.toString());

            }

            @Override
            public void failure(RetrofitError error) {
                Log.e("Retrofit:",error.toString());

            }
        });

    }

    private static ApiEndpointInterface prepareService() {
        RestAdapter restAdapter = new RestAdapter.Builder()
                .setEndpoint(BASE_URL)
                .build();
        ApiEndpointInterface apiService =
                restAdapter.create(ApiEndpointInterface.class);

        restAdapter.setLogLevel(RestAdapter.LogLevel.FULL);
        return apiService;
    }

}

My actual retrofit implementation is simple:

public class ApiEndpointInterface {

    @GET("/v1/myendpoint")
    void ping(Callback<Response> cb);
}

The problem is, I can't build the project. I received an error:

Error:(12,10) error: missing method body,or declare abstract

Refer to my apiendpointinterface class

Do you know what happened?

Solution

An attempt was made to declare an API using a public interface

public interface ApiEndpointInterface {

    @GET("/v1/myendpoint")
    void ping(Callback<Response> cb);
}

In addition, you seem to be creating apiendpointinterface. Before telling the builder to set the log level to full

private static ApiEndpointInterface prepareService() {

    RestAdapter restAdapter = new RestAdapter.Builder()
            .setEndpoint(BASE_URL)
            .setLogLevel(RestAdapter.LogLevel.FULL);
            .build();

    ApiEndpointInterface apiService =
            restAdapter.create(ApiEndpointInterface.class);

    return apiService;
}