Retrofit Callback - Customization

Retrofit CallBack

import android.support.annotation.NonNull;

import com.ingrails.nepatop.R;
import com.ingrails.nepatop.utils.NepaTopApplication;

import java.io.InterruptedIOException;
import java.net.ConnectException;
import java.net.UnknownHostException;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

/**
 * Created by NaRan on 27,July,2018.
 * Copyright (c) inGrails Pvt. Ltd. All rights reserved.
 * [email protected]
 * MacBook
 **/
public class MyCallback<T> implements Callback<T> {

    private String cause;

    @Override
    public void onResponse(@NonNull Call<T> call, @NonNull Response<T> response) {

    }

    @Override
    public void onFailure(@NonNull Call<T> call, @NonNull Throwable throwable) {
        if (throwable instanceof UnknownHostException) {
            cause = MyApplication.getAppContext().getString(R.string.no_internet_connection);
        } else if (throwable instanceof InterruptedIOException) {
            cause = MyApplication.getAppContext().getString(R.string.slow_internet_connection);
        } else if (throwable instanceof ConnectException) {
            cause = MyApplication.getAppContext().getString(R.string.cannot_connect_to_server);
        } else {
            cause = MyApplication.getAppContext().getString(R.string.unknown_error);
        }
    }

    public String getCause() {
        return cause;
    }
}