com.emobc.android.utils.RetreiveFileContentTask.java Source code

Introduction

Here is the source code for com.emobc.android.utils.RetreiveFileContentTask.java

Source

/**
 * Copyright 2012 Neurowork Consulting S.L.
 *
 * This file is part of eMobc.
 *
 * RetreiveFileContentTask.java
 * eMobc Android Framework
 *
 * eMobc is free software: you can redistribute it and/or modify
 * it under the terms of the Affero GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * eMobc is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the Affero GNU General Public License
 * along with eMobc. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.emobc.android.utils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.util.EntityUtils;

import android.os.AsyncTask;
import android.util.Log;

/**
 * Ansync Task to download a file in backgorund.
 * @author Jorge E. Villaverde
 * @version 0.1
 * @since 0.1
 */
public class RetreiveFileContentTask extends AsyncTask<URL, Void, String> {
    private List<NameValuePair> parameters;
    private boolean usePostMethod;

    public RetreiveFileContentTask(List<NameValuePair> parameters, boolean usePostMethod) {
        super();
        this.parameters = parameters;
        this.usePostMethod = usePostMethod;
    }

    @Override
    protected String doInBackground(URL... params) {
        URL url = params[0];
        HttpClient httpclient = HttpUtils
                .getHttpClient(url.getProtocol().equalsIgnoreCase(HttpUtils.HTTPS_PROTOCOL));

        HttpUriRequest httpUriRequest = createUriRequest(url);

        try {
            // Execute HTTP Post Request
            HttpResponse response = httpclient.execute(httpUriRequest);

            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                String str = EntityUtils.toString(response.getEntity());
                return str;
            } else {
                Log.w("RetreiveFileContentTask: ",
                        "HttpStatus Code: " + String.valueOf(response.getStatusLine().getStatusCode()));
            }
        } catch (ClientProtocolException e) {
            Log.e("RetreiveFileContentTask: ClientProtocolException: ", e.getMessage());
            //          Toast.makeText(context, e.getMessage(), Toast.LENGTH_SHORT).show();
        } catch (IOException e) {
            Log.e("RetreiveFileContentTask: IOException: ", e.getMessage());
            //          Toast.makeText(context, e.getMessage(), Toast.LENGTH_SHORT).show();             
        }
        return "";
    }

    private HttpUriRequest createUriRequest(URL url) {
        if (usePostMethod) {
            return createPostUriRequest(url);
        }
        return createGetUriRequest(url);
    }

    private HttpUriRequest createPostUriRequest(URL url) {
        HttpPost httppost = new HttpPost(url.toString());
        // Add your data
        try {
            httppost.setEntity(new UrlEncodedFormEntity(parameters));
            return httppost;
        } catch (UnsupportedEncodingException e) {
        }
        return null;
    }

    private HttpUriRequest createGetUriRequest(URL url) {
        HttpGet httpGet = new HttpGet(url.toString());
        return httpGet;
    }
}