Android Open Source - democracynow-android Rss Handler

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Back to project page democracynow-android.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.workingagenda.another.freedemocracynow;
//  w ww  .j a  va2s.c o  m

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import java.util.ArrayList;
import java.util.List;

/*
 * Copyright (C) 2014 Shirwa Mohamed <shirwa99@gmail.com>
 *
 * 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.
 */


public class RssHandler extends DefaultHandler {
    private List<RssItem> rssItemList;
    private RssItem currentItem;
    private boolean parsingTitle;
    private boolean parsingLink;
    private boolean parsingDescription;

    public RssHandler() {
        //Initializes a new ArrayList that will hold all the generated RSS items.
        rssItemList = new ArrayList<RssItem>();
    }

    public List<RssItem> getRssItemList() {
        return rssItemList;
    }


    //Called when an opening tag is reached, such as <item> or <title>
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if (qName.equals("item"))
            currentItem = new RssItem();
        //this means date in DM
        else if (qName.equals("title"))
            parsingTitle = true;
        else if (qName.equals("link"))
            parsingLink = true;
        else if (qName.equals("description"))
            parsingDescription = true;
        else if (qName.equals("media:thumbnail") || qName.equals("image")) {
            if (attributes.getValue("url") != null)
                currentItem.setImageUrl(attributes.getValue("url"));
        }
        else if (qName.equals("media:content")){
            if (attributes.getValue("url") != null)
                currentItem.setVideoUrl(attributes.getValue("url"));
        }
    }

    //Called when a closing tag is reached, such as </item> or </title>
    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if (qName.equals("item")) {
            //End of an item so add the currentItem to the list of items.
            rssItemList.add(currentItem);
            currentItem = null;
        } else if (qName.equals("title"))
            parsingTitle = false;
        else if (qName.equals("link"))
            parsingLink = false;
        else if (qName.equals("description"))
            parsingDescription = false;
    }

    //Goes through character by character when parsing whats inside of a tag.
    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        if (currentItem != null) {
            //If parsingTitle is true, then that means we are inside a <title> tag so the text is the title of an item.
            if (parsingTitle)
                currentItem.setTitle(new String(ch, start, length));
                //If parsingLink is true, then that means we are inside a <link> tag so the text is the link of an item.
            else if (parsingLink)
                currentItem.setLink(new String(ch, start, length));
                //If parsingDescription is true, then that means we are inside a <description> tag so the text is the description of an item.
            else if (parsingDescription)
                currentItem.setDescription(new String(ch, start, length));
        }
    }
}

Java Source Code List

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