Retrofit2，调试和发布版本的不同行为

import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class ApiClient {
    private static final String BASE_URL = "https://api.example.com/";
    private static Retrofit retrofit = null;

    public static Retrofit getClient() {
        if (retrofit == null) {
            HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
            if (BuildConfig.DEBUG) {
                interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
            } else {
                interceptor.setLevel(HttpLoggingInterceptor.Level.NONE);
            }

            OkHttpClient client = new OkHttpClient.Builder()
                    .addInterceptor(interceptor)
                    .build();

            retrofit = new Retrofit.Builder()
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .client(client)
                    .build();
        }
        return retrofit;
    }
}