Android Open Source - RssReader Rss Item List Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * RssReader//  w  ww .ja v a  2 s .c o  m
 *
 * Copyright (c) 2013-2014 teejoe
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.m2x.rssreader.activity;

import java.util.ArrayList;

import org.m2x.rssreader.Constants;
import org.m2x.rssreader.MainApplication;
import org.m2x.rssreader.fragment.RssItemListFragment;
import org.m2x.rssreader.provider.FeedData.EntryColumns;
import org.m2x.rssreader.service.FetcherService;
import org.m2x.rssreader.util.UiUtils;
import org.m2x.rssreader.R;

import android.content.BroadcastReceiver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.widget.Toast;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;


/**
 * The RSS item list Activity. Only work if the layout has single pane, 
 * otherwise will reuse the RssItenListFragment in the MainActivity.
 * @author teejoe (mtjm2x@gmail.com)
 *
 */
public class RssItemListActivity extends SherlockFragmentActivity implements
    RssItemListFragment.OnRssItemSelectedListener {
  
  public static final String EXTRA_URI = "URI";
  
  private RssItemListFragment mFragment; 
    
  private MenuItem mMenuRefresh;
  
  @Override
    protected void onCreate(Bundle savedInstanceState) {
    UiUtils.setPreferenceTheme(this);
        super.onCreate(savedInstanceState);
        
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // If we are in two-pane layout mode, this activity is no longer necessary
        if (getResources().getBoolean(R.bool.has_two_panes)) {
            finish();
            return;
        }

        // Place an RssItemListFragment as our content pane
        mFragment = (RssItemListFragment)getSupportFragmentManager()
            .findFragmentByTag(Constants.RSS_ITEM_LIST_FRAGMENT);
        if (mFragment == null){
          mFragment = new RssItemListFragment();
          getSupportFragmentManager().beginTransaction().add(android.R.id.content, mFragment, 
              Constants.RSS_ITEM_LIST_FRAGMENT).commit();
        }
        mFragment.setRssItemSelectedListener(this);
        
        // Register the BroadcastReceiver to messages from FetthService.
        LocalBroadcastManager.getInstance(this).registerReceiver(new ResponseReceiver(), 
            new IntentFilter(Constants.BROADCAST_ACTION_REFRESH_FINISHED));
        LocalBroadcastManager.getInstance(this).registerReceiver(new ResponseReceiver(), 
            new IntentFilter(Constants.BROADCAST_ACTION_NETWORK_PROBLEM));
      
      // Begin to load list data.
      Uri uri = Uri.parse(getIntent().getStringExtra(EXTRA_URI));
      mFragment.beginLoadData(uri);
  }

  @Override
  public void onRssItemSelected(int index) {
        // Get extras.
        Intent intent = new Intent(this, RssArticleActivity.class);
        ArrayList<Long> entryIdList = mFragment.getRssEntryIds();
        long[] entryIds = new long[entryIdList.size()];
        for (int i = 0; i < entryIdList.size(); i++) {
          entryIds[i] = entryIdList.get(i);
        }
        intent.putExtra(RssArticleActivity.EXTRA_ENTRY_IDS, entryIds);
        intent.putExtra(RssArticleActivity.EXTRA_INIT_POS, index);
        
    // Set the entry item as read.
    ContentValues value = new ContentValues();
    value.put(EntryColumns.IS_READ, true);
    MainApplication.getContext().getContentResolver().update(
        EntryColumns.CONTENT_URI(entryIds[index]), value, null , null);
    
    // Start the RssArticleActivity.
        startActivity(intent); 
  }
  
  @Override
    public boolean onCreateOptionsMenu(Menu menu) {
    // Create the options menu by xml resource.
    getSupportMenuInflater().inflate(R.menu.main_theme_dark, menu);
    mMenuRefresh = menu.findItem(R.id.refresh);
        return true;
    }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem menuItem) {
      switch (menuItem.getItemId()) {
      case android.R.id.home:
          // Press home button on the ActionBar equals to Back button.
          finish();
          return true;
      case R.id.add:
        Intent intent1 = new Intent(this, AddChannelActivity.class);
        startActivity(intent1);
        break;
      case R.id.menu:
        Intent intent2 = new Intent(this, PreferenceActivity.class);
        startActivity(intent2);
        break;
      case R.id.refresh:
        mMenuRefresh.setActionView(R.layout.progress_menu_item);
        startService(new Intent(this, FetcherService.class)
            .setAction(FetcherService.ACTION_REFRESH_FEEDS));
        break;
      }
      
    return (super.onOptionsItemSelected(menuItem));
  }
  
  /** Broadcast receiver for receiving messages from the FetcherService. */
  private class ResponseReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
      if (intent.getAction().equals(Constants.BROADCAST_ACTION_REFRESH_FINISHED)) {
        if (mMenuRefresh != null) {
          mMenuRefresh.setActionView(null);
        }
        // Begin to reload list data.
          Uri uri = Uri.parse(getIntent().getStringExtra(EXTRA_URI));
          mFragment.beginLoadData(uri);
      } else if (intent.getAction().equals(Constants.BROADCAST_ACTION_NETWORK_PROBLEM)) {
        if (mMenuRefresh != null) {
          mMenuRefresh.setActionView(null);
        }
        
        Toast.makeText(context, getResources().getString(
            R.string.error_network_access_problem), Toast.LENGTH_LONG).show();
      }
      
    }
  }
}

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