com.mytwitter.retrofit.RetrofitErrorHandler.java Source code

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Here is the source code for com.mytwitter.retrofit.RetrofitErrorHandler.java

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/*
 *
 * Copyright 2016 Manish Patel (MD)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.mytwitter.retrofit;

import android.content.Context;
import android.text.TextUtils;

import com.mytwitter.R;

import org.apache.http.HttpStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import retrofit.ErrorHandler;
import retrofit.RetrofitError;
import retrofit.client.Response;

/**
 * Provide custom error handling for Retrofit requests.
 */
public class RetrofitErrorHandler implements ErrorHandler {

    private static final Logger logger = LoggerFactory.getLogger("c*.r*.RetrofitErrorHan*");
    private final Context context;

    public RetrofitErrorHandler(Context context) {
        this.context = context;
    }

    @Override
    public Throwable handleError(RetrofitError error) {
        logger.debug("error: " + error.getKind());
        if (error.getKind().equals(RetrofitError.Kind.NETWORK)) {
            // Phone is not connected at all
            return new NoConnectivityException(context.getString(R.string.no_internet_connection));
        }

        if (error.getKind().equals(RetrofitError.Kind.CONVERSION)) {
            // Web services usually return JSON, so the phone is probably trying to use mobile data without credit
            return new NoConnectivityException(
                    context.getString(R.string.no_internet_connection_mobile_out_of_credit));
        }

        Response response = error.getResponse();
        String errorDescription = "Unknown Retrofit error";

        if (response == null) {
            return error;
        }

        switch (response.getStatus()) {
        case HttpStatus.SC_BAD_REQUEST:
            // 404 returned from the server means there is no matching data
            errorDescription = error.getMessage().replace("400", "");
            break;

        case HttpStatus.SC_UNAUTHORIZED:
            //return new UnauthorizedException(error);

        case HttpStatus.SC_NOT_FOUND:
            if (!TextUtils.isEmpty(error.getMessage())) {
                // 404 returned from the server means there is no matching data
                errorDescription = error.getMessage().replace("404", "");
            }
            break;

        case HttpStatus.SC_INTERNAL_SERVER_ERROR:
            if (!TextUtils.isEmpty(error.getMessage())) {
                // 500 returned from the server means the server error
                errorDescription = error.getMessage().replace("500", "");
            }
            break;

        case HttpStatus.SC_SERVICE_UNAVAILABLE:
            return new NoConnectivityException("Server is not responding");

        default:
            try {
                errorDescription = context.getString(R.string.error_network_http_error,
                        error.getResponse().getStatus());
            } catch (Exception ex2) {
                logger.error("handleError: " + ex2.getLocalizedMessage());
                errorDescription = context.getString(R.string.error_unknown);
            }
            break;
        }

        //return error;
        return new Exception(errorDescription);
    }
}