Android Open Source - RssFeed Feed

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License

The source code is released under:

MIT License

Java Source Code

package o.fcour.se.osrss;
/*from w  w  w.ja v  a 2s  .  c  om*/
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;

import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.fima.cardsui.views.CardUI;
import com.jeremyfeinstein.slidingmenu.lib.app.SlidingActivity;

import de.nava.informa.core.ChannelIF;
import de.nava.informa.core.ItemIF;
import de.nava.informa.impl.basic.ChannelBuilder;
import de.nava.informa.utils.ChannelRegistry;
import de.nava.informa.utils.UpdateChannelInfo;
import de.nava.informa.utils.UpdateChannelTask;
import android.os.Bundle;
import android.view.View;
import android.widget.ProgressBar;

public class Feed extends SlidingActivity implements FeedGenerator.Callback, FeedUpdater.Callback {

  private ChannelRegistry rssFeeds;
  private ArrayList<URL> urls;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_feed);
    setBehindContentView(R.layout.activity_feed);
    
    /** We need a progress bar to show we are refreshing **/
    ProgressBar loading = (ProgressBar) findViewById(R.id.loadingFeed);
    loading.setVisibility(View.VISIBLE);
    
    if(urls==null) { //If no URLS, populate defaults
      urls = new ArrayList<URL>(2);
      try {
        urls.add(new URL("http://dailyegyptian.com/feed/"));
        urls.add(new URL("http://lifehacker.com/rss"));
      } catch (MalformedURLException e) {
        //Since urls are hardcoded, this shouldn't be reached
      }
    }

    if(rssFeeds==null) { //If no feeds, populate them with our URLS
      
      /** This is where we populate the URLS.. Replace later **/
      if(urls==null) { //If no URLS, populate defaults
        urls = new ArrayList<URL>(2);
        try {
          urls.add(new URL("http://dailyegyptian.com/feed/"));
          urls.add(new URL("http://lifehacker.com/rss"));
        } catch (MalformedURLException e) {
          //Since urls are hardcoded, this shouldn't be reached
        }
      }

      rssFeeds = new ChannelRegistry(new ChannelBuilder());
      Iterator<URL> it = urls.iterator();
      while(it.hasNext()) {
        (new FeedGenerator(this)).execute(it.next());
      }
    }
    getSupportActionBar().setHomeButtonEnabled(true);
    getSlidingMenu().setBehindWidthRes(R.dimen.SlidingMenuWidth);
  }

  @Override
  protected void onResume() {
    super.onResume();
    refresh();
  }

  public void update() {
    Iterator<?> feeds = rssFeeds.getChannels().iterator();
    while(feeds.hasNext()) {
      ChannelIF next = (ChannelIF)feeds.next();
      FeedUpdater.execute(new UpdateChannelTask(rssFeeds,new ChannelBuilder(), next, new UpdateChannelInfo(5)));
    }
  }

  public void refresh() {

    ArrayList<ArticleCard> cards = new ArrayList<ArticleCard>();

    Iterator<?> feeds = rssFeeds.getChannels().iterator();
    while(feeds.hasNext()) {
      ChannelIF next = (ChannelIF)feeds.next();
      Iterator<ItemIF> articles = next.getItems().iterator();
      while(articles.hasNext()) {
        ArticleCard card = new ArticleCard(articles.next(),this);
        card.setOnClickListener(card);
        cards.add(card);
      }
    }
    Collections.sort(cards);

    CardUI feedView = (CardUI) findViewById(R.id.feedVIew);
    feedView.clearCards();
    Iterator<ArticleCard> it = cards.iterator();
    while(it.hasNext()) {
      feedView.addCard(it.next());
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    this.getSupportMenuInflater().inflate(R.menu.feed, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()) {
    case android.R.id.home:
      toggle();
    case R.id.feedRefresh:
      refresh();
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  public void complete(ChannelIF feed) {
    ProgressBar loading = (ProgressBar) findViewById(R.id.loadingFeed);
    loading.setVisibility(View.GONE);
    rssFeeds.addChannel(feed,false,Integer.MAX_VALUE);
    refresh();
  }

  @Override
  public void complete() {
    refresh();
  }

}

Java Source Code List

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