com.urucas.services.RequestTask.java Source code

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Here is the source code for com.urucas.services.RequestTask.java

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package com.urucas.services;

/**
* @copyright Urucas
* @license   Copyright (C) 2013. All rights reserved
* @version   Release: 1.0.0
* @link       http://urucas.com
* @developers Bruno Alassia, Pamela Prosperi
*/

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

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

public class RequestTask extends AsyncTask<String, String, String> {

    protected RequestTaskHandler rsh;
    protected JSONRequestTaskHandler jrsh;
    private ArrayList<NameValuePair> headers;
    private ArrayList<NameValuePair> params;

    public RequestTask(RequestTaskHandler _rsh) {
        super();
        rsh = _rsh;
    }

    public RequestTask(JSONRequestTaskHandler _jrsh) {
        super();
        jrsh = _jrsh;
    }

    public RequestTask() {
        super();
    }

    public RequestTask addHeader(String name, String value) {
        if (null == headers) {
            headers = new ArrayList<NameValuePair>();
        }
        headers.add(new BasicNameValuePair(name, value));
        return this;
    }

    public RequestTask addParam(String name, String value) {
        if (null == params) {
            params = new ArrayList<NameValuePair>();
        }
        params.add(new BasicNameValuePair(name, value));
        return this;
    }

    public ArrayList<NameValuePair> getHeaders() {
        if (null == headers) {
            headers = new ArrayList<NameValuePair>();
        }
        return headers;
    }

    public ArrayList<NameValuePair> getParams() {
        if (null == params) {
            params = new ArrayList<NameValuePair>();
        }
        return params;
    }

    @Override
    protected String doInBackground(String... uri) {

        HttpClient httpclient = new DefaultHttpClient();

        // add request params
        StringBuffer url = new StringBuffer(uri[0]).append("?")
                .append(URLEncodedUtils.format(getParams(), "UTF-8"));

        HttpGet _get = new HttpGet(url.toString());

        Log.i("url---->", url.toString());
        // add request headers
        ArrayList<NameValuePair> _headers = getHeaders();
        for (NameValuePair pair : _headers) {
            _get.addHeader(pair.getName(), pair.getValue());
        }

        HttpResponse response;
        String responseString = null;
        // execute
        try {
            response = httpclient.execute(_get);
            StatusLine statusLine = response.getStatusLine();
            if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
                ByteArrayOutputStream out = new ByteArrayOutputStream();
                response.getEntity().writeTo(out);
                out.close();
                responseString = out.toString();

                if (isCancelled()) {
                    rsh.onError("Task cancel");
                }

            } else {
                //Closes the connection.
                response.getEntity().getContent().close();
                throw new IOException(statusLine.getReasonPhrase());
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            //rsh.onError(e.getMessage());
        } catch (IOException e) {
            e.printStackTrace();
            //rsh.onError(e.getMessage());      
        }
        return responseString;
    }

    @Override
    protected void onPostExecute(String result) {
        Log.i("api result", result);
        super.onPostExecute(result);
        rsh.onSuccess(result);
    }
}