Android Open Source - TaskButler Custom Sort Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * CustomSortActivity.java/*ww  w . ja  v  a 2 s.c o  m*/
 * 
 * Copyright 2012 Jonathan Hasenzahl, James Celona, Dhimitraq Jorgji
 * 
 * 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 edu.worcester.cs499summer2012.activity;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockListActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;

import edu.worcester.cs499summer2012.R;
import edu.worcester.cs499summer2012.adapter.ComparatorListAdapter;
import edu.worcester.cs499summer2012.database.TasksDataSource;
import edu.worcester.cs499summer2012.service.TaskButlerWidgetProvider;
import edu.worcester.cs499summer2012.task.Comparator;

/**
 * 
 * @author Jonathan Hasenzahl
 */
public final class CustomSortActivity extends SherlockListActivity {

  /**************************************************************************
   * Static fields and methods                                              *
   **************************************************************************/

  /**************************************************************************
   * Private fields                                                         *
   **************************************************************************/

  private TasksDataSource data_source;
  private static ComparatorListAdapter adapter;

  /**************************************************************************
   * Class methods                                                          *
   **************************************************************************/

  /**************************************************************************
   * Overridden parent methods                                              *
   **************************************************************************/

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Assign the layout to this activity
    setContentView(R.layout.activity_custom_sort);

    // Open the database
    data_source = TasksDataSource.getInstance(this);

    // Create an adapter for the task list
    adapter = new ComparatorListAdapter(this, data_source.getComparators());
    setListAdapter(adapter);
    
    // Allow Action bar icon to act as a button
        ActionBar action_bar = getSupportActionBar();
        action_bar.setIcon(R.drawable.ic_settings);
        action_bar.setHomeButtonEnabled(true);
        action_bar.setDisplayHomeAsUpEnabled(true);
  }
  
  @Override
  public void onStop() {
    // Update homescreen widget (after change has been saved to DB)
    TaskButlerWidgetProvider.updateWidget(this);
    
    super.onStop();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getSupportMenuInflater();
    inflater.inflate(R.menu.activity_custom_sort, menu);
    
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
      finish();
      return true;
      
    case R.id.menu_custom_sort_help:
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle(R.string.dialog_sorting_title);
        builder.setIcon(R.drawable.ic_help);
        builder.setMessage(R.string.dialog_sorting_help);
        builder.setCancelable(true);
        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int id) {
          dialog.dismiss();
        }
        
      });
        builder.create().show();
      return true;

    default:
      return super.onOptionsItemSelected(item);
    }
  }
  
  @Override
  public void onListItemClick(ListView list_view, View view, int position, 
      long id) {
    Comparator comparator = adapter.getItem(position);
    comparator.toggleEnabled();
    adapter.notifyDataSetChanged();
    data_source.updateComparator(comparator);
  }
}
Java Source Code List
