Loading newsfeed in background

ListItem.java

package com.ideaplay.sharee.utility;

import java.util.ArrayList;

public class ListItem {
  private String contributorImageUrl;
	private String itemTitle;
	private String itemContent;
	private String itemContributor;
	private String itemPubDate;
	private String itemSummary;
	private String itemLink;
	private String category;	
	private ArrayList<String> listCategory = new ArrayList<String>();

	public ListItem() {
		listCategory = new ArrayList<String>();
	}

	public ListItem(String itemTitle, String itemPubDate, String itemSummary) {
		listCategory = new ArrayList<String>();
		this.itemTitle = itemTitle;
		this.itemPubDate = itemPubDate;
		this.itemSummary = itemSummary;
	}

	public ListItem(String contributorImageUrl, String itemTitle,
			String itemContributor, String itemPubDate, String itemSummary) {
		listCategory = new ArrayList<String>();
		this.contributorImageUrl = contributorImageUrl;
		this.itemTitle = itemTitle;
		this.itemContributor = itemContributor;
		this.itemPubDate = itemPubDate;
		this.itemSummary = itemSummary;
	}

	public String getContributorImageUrl() {
		return contributorImageUrl;
	}

	public void setContributorImageUrl(String contributorImageUrl) {
		this.contributorImageUrl = contributorImageUrl;
	}

	public String getItemTitle() {
		return itemTitle;
	}

	public void setItemTitle(String itemTitle) {
		this.itemTitle = itemTitle;
	}

	public String getItemContent() {
		return itemContent;
	}

	public void setItemContent(String itemContent) {
		this.itemContent = itemContent;
	}

	public String getItemContributor() {
		return itemContributor;
	}

	public void setItemContributor(String itemContributor) {
		this.itemContributor = itemContributor;
	}

	public String getItemPubDate() {
		return itemPubDate;
	}

	public void setItemPubDate(String itemPubDate) {
		this.itemPubDate = itemPubDate;
	}

	public String getItemSummary() {
		return itemSummary;
	}

	public void setItemSummary(String itemSummary) {
		this.itemSummary = itemSummary;
	}

	public String getItemLink() {
		return itemLink;
	}

	public void setItemLink(String itemLink) {
		this.itemLink = itemLink;
	}

	public void setItemCategory(String itemCategory) {
		listCategory.add(itemCategory);
	}

	public ArrayList<String> getListCategory() {
		return listCategory;
	}

	public void setListCategory(ArrayList<String> listCategory) {
		this.listCategory = listCategory;
	}
	
	public String listCategoryToString(){
		String result = "";
		for(int i=0;i<listCategory.size();i++){
			if(i==listCategory.size()-1){
				result += listCategory.get(i);
			}else{
				result += listCategory.get(i)+", ";
			}						
		}
		return result;
	}

	public String getCategory() {
		return category;
	}

	public void setCategory(String category) {
		this.category = category;
	}
}

NewsFeedActivity.java

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

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

import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.ideaplay.sharee.MenuListFragment;
import com.ideaplay.sharee.R;
import com.ideaplay.sharee.ShareeApplication;
import com.ideaplay.sharee.SlidingSherlockFragmentActivity;
import com.ideaplay.sharee.utility.ListItem;
import com.ideaplay.sharee.utility.Utility;

public class NewsFeedActivity extends SlidingSherlockFragmentActivity {

  private static String RSS_URL = "http://ib.eramuslim.com//feed";
	private static String RSS_XML_FILE = "iblifestyle.xml";
	private com.actionbarsherlock.view.MenuItem refreshItem = null;
	private ArrayList<ListItem> newsListItem;
	private ListView newsListView;
	private ParseXMLTask pXMLTask;
	private ShareeApplication app;

	public void onCreate(android.os.Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.newslist_activity);

		setBehindContentView(R.layout.slidingmenu_frame);

		newsListView = (ListView) findViewById(R.id.postList);

		// Initiate Sliding Menu
		FragmentTransaction t = getSupportFragmentManager().beginTransaction();
		t.add(R.id.frame, new MenuListFragment());
		t.commit();

		// Customize Sliding Menu
		this.setSlidingActionBarEnabled(false);
		getSlidingMenu().setShadowWidthRes(R.dimen.shadow_width);
		getSlidingMenu().setShadowDrawable(R.drawable.shadow);
		getSlidingMenu().setBehindOffsetRes(R.dimen.actionbar_home_width);
		getSlidingMenu().setBehindScrollScale(0.25f);

		// Customize Action Bar
		ActionBar actionBar = getSupportActionBar();
		actionBar.setDisplayHomeAsUpEnabled(true);
		actionBar.setTitle("Update Berita");

		pXMLTask = new ParseXMLTask();

		newsListView
				.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
					public void onItemClick(AdapterView<?> parent, View view,
							int position, long id) {
						// TODO Auto-generated method stub
						Intent intent = new Intent(NewsFeedActivity.this,
								NewsArticleActivity.class);
						intent.putExtra("Title", newsListItem.get(position)
								.getItemTitle());
						intent.putExtra("Description",
								newsListItem.get(position).getItemSummary());
						intent.putExtra("Content", newsListItem.get(position)
								.getItemContent());
						intent.putExtra("PubDate", newsListItem.get(position)
								.getItemPubDate());
						intent.putExtra("Author", newsListItem.get(position)
								.getItemContributor());
						intent.putExtra("Link", newsListItem.get(position)
								.getItemLink());
						startActivity(intent);
					}
				});

	}

	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
		try {
			pXMLTask.execute();
		} catch (IllegalStateException e) {
		}
	}

	public boolean onCreateOptionsMenu(Menu menu) {
		// TODO Auto-generated method stub
		getSupportMenuInflater().inflate(R.menu.feed_menu, menu);
		refreshItem = menu.findItem(R.id.refresh);

		app = (ShareeApplication) getApplication();

		Boolean newsLoaded = (Boolean) app.getAppData("newsLoaded");

		if (!newsLoaded) {
			refresh();
			app.setAppData("newsLoaded", true);
		}
		return true;
	}

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

	private void refresh() {
		LayoutInflater inflater = (LayoutInflater) NewsFeedActivity.this
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		ImageView iv = (ImageView) inflater.inflate(
				R.layout.refresh_action_view, null);
		Animation rotation = AnimationUtils.loadAnimation(
				NewsFeedActivity.this, R.drawable.refresh_animation);
		rotation.setRepeatCount(Animation.INFINITE);
		iv.startAnimation(rotation);
		refreshItem.setActionView(iv);
		new DownloadXMLTask().execute();
	}

	private void completeRefresh() {
		if (refreshItem != null && refreshItem.getActionView() != null) {
			refreshItem.getActionView().clearAnimation();
			refreshItem.setActionView(null);
		}
	}

	class DownloadXMLTask extends AsyncTask<String, Void, Void> {

		protected Void doInBackground(String... params) {
			// TODO Auto-generated method stub
			try {
				Utility.downloadFromUrl(RSS_URL, RSS_XML_FILE);
			} catch (IOException e) {
				e.printStackTrace();
				NewsFeedActivity.this.runOnUiThread(new Runnable() {
					public void run() {
						Toast.makeText(NewsFeedActivity.this,
								"Gagal Perbarui Berita", Toast.LENGTH_SHORT)
								.show();
					}
				});
			}
			return null;
		}

		protected void onPostExecute(Void result) {
			// TODO Auto-generated method stub
			new ParseXMLTask().execute();
			completeRefresh();
		}

	}

	class ParseXMLTask extends AsyncTask<Void, Void, Void> {

		protected Void doInBackground(Void... params) {
			newsListItem = new ArrayList<ListItem>();
			InputStream is = null;
			try {
				is = new FileInputStream(new File(
						android.os.Environment.getExternalStorageDirectory()
								+ "/sharee", RSS_XML_FILE));
				new NewsFeedHandler().parseContent(is);
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			return null;

		}

		protected void onPostExecute(Void result) {
			// TODO Auto-generated method stub
			NewsListAdapter adapter = new NewsListAdapter(
					NewsFeedActivity.this, newsListItem);
			newsListView.setAdapter(adapter);
		}

	}

	class NewsFeedHandler extends DefaultHandler {
		StringBuffer chars = new StringBuffer();
		boolean insideItem = false;
		ListItem listItem;

		public void parseContent(InputStream is) {
			try {
				SAXParserFactory factory = SAXParserFactory.newInstance();
				SAXParser saxParser = factory.newSAXParser();
				XMLReader xmlReader = saxParser.getXMLReader();
				xmlReader.setContentHandler(this);
				InputSource inputSource = new InputSource(is);
				xmlReader.parse(inputSource);
			} catch (IOException e) {
				e.printStackTrace();
			} catch (SAXException e) {
				e.printStackTrace();
			} catch (ParserConfigurationException e) {
				e.printStackTrace();
			}
		}

		public void startElement(String uri, String localName, String qName,
				Attributes attributes) throws SAXException {
			chars = new StringBuffer();
			if (localName.equalsIgnoreCase("item")) {
				listItem = new ListItem();
				insideItem = true;
			}
		}

		public void endElement(String uri, String localName, String qName)
				throws SAXException {
			if (insideItem) {
				if (localName.equalsIgnoreCase("title")
						&& listItem.getItemTitle() == null) {
					listItem.setItemTitle(chars.toString());
				}
				if (localName.equalsIgnoreCase("description")
						&& listItem.getItemSummary() == null) {
					listItem.setItemSummary(chars.toString());
				}
				if (localName.equalsIgnoreCase("link")
						&& listItem.getItemLink() == null) {
					listItem.setItemLink(chars.toString());
				}
				if (localName.equalsIgnoreCase("pubDate")
						&& listItem.getItemPubDate() == null) {
					String pubDate = chars.toString().replace("+0000", "");
					listItem.setItemPubDate(pubDate);
				}
				if (localName.equalsIgnoreCase("category")
						&& listItem.getCategory() == null) {
					listItem.setCategory(chars.toString());
				}
				if (localName.equalsIgnoreCase("encoded")
						&& listItem.getItemContent() == null) {
					listItem.setItemContent(chars.toString());
				}
				if (localName.equalsIgnoreCase("creator")
						&& listItem.getItemContributor() == null) {
					listItem.setItemContributor(chars.toString());
				}
				if (localName.equalsIgnoreCase("item")) {
					newsListItem.add(listItem);
				}
			}
		}

		public void characters(char[] ch, int start, int length)
				throws SAXException {
			// TODO Auto-generated method stub
			chars.append(new String(ch, start, length));
		}
	}

}

NewsListAdapter.java

package com.ideaplay.sharee.newsfeed;

import java.util.List;

import android.content.Context;
import android.graphics.Typeface;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import com.ideaplay.sharee.R;
import com.ideaplay.sharee.utility.ListItem;

public class NewsListAdapter extends ArrayAdapter<ListItem> {
  
	ViewHolder holder;
	public NewsListAdapter(Context context, List<ListItem> objects) {
		super(context, 0, objects);
		// TODO Auto-generated constructor stub
	}

	
	public View getView(int position, View convertView, ViewGroup parent) {

		View rowView = convertView;	

		ListItem listItem = getItem(position);
		if (rowView == null) {
			LayoutInflater vi = (LayoutInflater) getContext().getSystemService(
					Context.LAYOUT_INFLATER_SERVICE);
			rowView = vi.inflate(R.layout.row, null);

			holder = new ViewHolder();
			holder.title = (TextView) rowView
					.findViewById(R.id.newslistitem_title);			
			holder.pubDate = (TextView) rowView
					.findViewById(R.id.newslistitem_pubdate);			


			Typeface tf = Typeface.createFromAsset(getContext().getAssets(),
					"fonts/Roboto-Regular.ttf");

			holder.title.setTypeface(tf, 1);
			holder.pubDate.setTypeface(tf);

			rowView.setTag(holder);
		} else {
			holder = (ViewHolder) rowView.getTag();
		}

		holder.title.setText(Html.fromHtml(listItem.getItemTitle()));
		holder.pubDate.setText(listItem.getItemPubDate());				
		
		return rowView;
	}


	static class ViewHolder {
		TextView title;
		TextView pubDate;		
	}

}

Utility.java

//here code before..

public static void downloadFromUrl(String downloadUrl, String fileName)
  		throws IOException {
		File root = android.os.Environment.getExternalStorageDirectory(); // path
																			// ke
																			// sdcard

		File dir = new File(root.getAbsolutePath() + "/sharee"); // path ke
																	// folder

		if (dir.exists() == false) { // cek folder eksistensi
			dir.mkdirs(); // kalau belum ada, dibuat
		}

		URL url = new URL(downloadUrl); // you can write here any link
		File file = new File(dir, fileName);

		/* Open a connection to that URL. */
		URLConnection ucon = url.openConnection();

		/*
		 * Define InputStreams to read from the URLConnection.
		 */
		InputStream is = ucon.getInputStream();
		BufferedInputStream bis = new BufferedInputStream(is);

		/*
		 * Read bytes to the Buffer until there is nothing more to read(-1).
		 */
		ByteArrayBuffer baf = new ByteArrayBuffer(5000);
		int current = 0;
		while ((current = bis.read()) != -1) {
			baf.append((byte) current);
		}

		/* Convert the Bytes read to a String. */
		FileOutputStream fos = new FileOutputStream(file);
		fos.write(baf.toByteArray());
		fos.flush();
		fos.close();
	}
  
  //here code after...