Android Open Source - RSSNewsReaderApp Detail Activity

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From Project

Back to project page RSSNewsReaderApp.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.romanostrechlis.rssnews;
/*  w  w w.  j a  v  a2  s.  c  om*/
import java.util.List;

import com.romanostrechlis.rssnews.auxiliary.DatabaseHandler;
import com.romanostrechlis.rssnews.content.RssFeed;
import com.romanostrechlis.rssnews.content.RssItem;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.text.Html;
import android.text.method.LinkMovementMethod;
import android.view.Gravity;
import android.view.MenuItem;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;

/**
 * Creates the layout for individual RSS items to appear.
 * 
 * @author Romanos Trechlis
 *
 */
public class DetailActivity extends Activity {

  private RssFeed mFeed;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_node_detail);
    
    getActionBar().setDisplayHomeAsUpEnabled(true);
    
    DatabaseHandler db = DatabaseHandler.getInstance(this);
    mFeed = db.getRssFeed(Integer.parseInt(getIntent().getExtras().get("feedId").toString()));
    
    mFeed.setNewContent(false);
    db.updateRssFeed(mFeed);
    mFeed.setList(db.getFeedItems(Integer.parseInt(mFeed.getId())));
    createRSSLayout(this);
  }

  /**
   * Method generates the necessary view elements so the rss feed can be viewed.
   * 
   * @param context  the current activity from {@link #getActivity()}
   * @param rootView  
   */
  private void createRSSLayout(Context context) {
    final LinearLayout linear = (LinearLayout) findViewById(R.id.linearLayout);
    if (mFeed != null) {
      // getting feed from internet
      // this line gets the feed 
      // Content.feedContent(mItem);
      List<RssItem> col = mFeed.getList();
      ScrollView sv = new ScrollView(context);
      LinearLayout linearWrapper = new LinearLayout(context);
      linearWrapper.setOrientation(LinearLayout.VERTICAL);
      linearWrapper.setPadding(10, 0, 10, 0);
      if (!col.isEmpty()) {
        for (int i = 0; i < col.size(); i++) {
          final RssItem rf = col.get(i);
          LinearLayout ll = new LinearLayout(context);
          ll.setOrientation(LinearLayout.VERTICAL);
          ll.setPadding(0, 0, 0, 15);
          // Title
          TextView title = new TextView(context);
          title.setTypeface(null, Typeface.BOLD);

          title.setTextSize(14);
          title.setText(rf.getTitle());
          ll.addView(title);
          // Description
          TextView description = new TextView(context);
          description.setTextSize(12);
          String htmlNoImg = "", htmlNoA = "", htmlNoStrong = "", htmlNoHeaders = "";
          htmlNoImg = rf.getDescription().replaceAll("</?img[^>]*?>", "").replaceAll("<img[^>]*?>.*?</img[^>]*?>", "");
          htmlNoA = htmlNoImg.replaceAll("</?a[^>]*?>", "").replaceAll("<a[^>]*?>.*?</a[^>]*?>", "");
          htmlNoStrong = htmlNoA.replaceAll("</?strong[^>]*?>", "");
          // there is no reason for h1/h2/h3 tags to exist inside the description
          htmlNoHeaders = htmlNoStrong.replaceAll("</?h1[^>]*?>", "").replaceAll("<h1[^>]*?>.*?</h1[^>]*?>", "");
          htmlNoHeaders = htmlNoHeaders.replaceAll("</?h2[^>]*?>", "").replaceAll("<h2[^>]*?>.*?</h2[^>]*?>", "");
          htmlNoHeaders = htmlNoHeaders.replaceAll("</?h3[^>]*?>", "").replaceAll("<h3[^>]*?>.*?</h3[^>]*?>", "");
          // Check regex: http://www.regexplanet.com/advanced/java/index.html
          // Log.d(TAG, htmlNoA);
          description.setText(Html.fromHtml(htmlNoHeaders));
          ll.addView(description);

          // Link
          String url = "<a href='" + rf.getLink() + "'>Read More</a>";
          TextView link = new TextView(context);
          link.setClickable(true);
          link.setGravity(Gravity.END);
          link.setMovementMethod(LinkMovementMethod.getInstance());
          link.setText(Html.fromHtml(url));
          // Log.d(TAG, url);
          ll.addView(link);
          linearWrapper.addView(ll);
        }
      } 
      sv.addView(linearWrapper);
      linear.addView(sv);
    }
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == android.R.id.home) {
      // This ID represents the Home or Up button. In the case of this
      // activity, the Up button is shown. Use NavUtils to allow users
      // to navigate up one level in the application structure. For
      // more details, see the Navigation pattern on Android Design:
      //
      // http://developer.android.com/design/patterns/navigation.html#up-vs-back
      //
      Intent intent = new Intent(this, MainActivity.class);
      NavUtils.navigateUpTo(this, intent);
      return true;
    }
    return super.onOptionsItemSelected(item);
  }
}

Java Source Code List

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