Android Open Source - tum-campus News

From Project

Back to project page tum-campus.
License

The source code is released under:
GNU General Public License
If you think the Android project tum-campus listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

?package de.tum.in.tumcampus;
//from w w  w . j  a v  a  2 s .c  om
import android.app.Activity;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.SimpleCursorAdapter.ViewBinder;
import android.widget.TextView;
import android.widget.Toast;
import de.tum.in.tumcampus.models.NewsManager;
import de.tum.in.tumcampus.services.DownloadService;

/**
 * Activity to show News (message, image, date)
 */

public class News extends Activity implements OnItemClickListener, ViewBinder {

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.news);

    // get toast feedback and resume activity
    registerReceiver(DownloadService.receiver, new IntentFilter(DownloadService.broadcast));
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    unregisterReceiver(DownloadService.receiver);
  }

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

    // get all news from database
    NewsManager nm = new NewsManager(this);
    Cursor c = nm.getAllFromDb();

    SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.news_listview, c, c.getColumnNames(),
        new int[] { R.id.image, R.id.message, R.id.date });

    adapter.setViewBinder(this);

    ListView lv = (ListView) findViewById(R.id.listView);
    lv.setAdapter(adapter);
    lv.setOnItemClickListener(this);

    // reset new items counter
    NewsManager.lastInserted = 0;
  }

  @Override
  public void onItemClick(AdapterView<?> aview, View view, int position, long id) {
    ListView lv = (ListView) findViewById(R.id.listView);
    Cursor c = (Cursor) lv.getAdapter().getItem(position);
    String url = c.getString(c.getColumnIndex("link"));

    if (url.length() == 0) {
      Toast.makeText(this, "Kein Link vorhanden.", Toast.LENGTH_LONG).show();
      return;
    }

    // Open Url in Browser
    Intent viewIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
    startActivity(viewIntent);
  }

  @Override
  public boolean setViewValue(View view, Cursor cursor, int index) {
    // add url (domain only) to date
    if (view.getId() == R.id.date) {
      String date = cursor.getString(index);
      String link = cursor.getString(cursor.getColumnIndex("link"));

      if (link.length() > 0) {
        TextView tv = (TextView) view;
        tv.setText(date + ", " + Uri.parse(link).getHost());
        return true;
      }
    }

    // hide empty view elements
    if (cursor.getString(index).length() == 0) {
      view.setVisibility(View.GONE);

      // no binding needed
      return true;
    }
    view.setVisibility(View.VISIBLE);
    return false;
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    MenuItem m = menu.add(0, Menu.FIRST, 0, "Aktualisieren");
    m.setIcon(R.drawable.ic_menu_refresh);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // download latest news
    Intent service = new Intent(this, DownloadService.class);
    service.putExtra("action", "news");
    startService(service);
    return true;
  }
}
Java Source Code List
