Android Open Source - Android-Paginated-ListView-Demo Datasource

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright (C) 2012 Daniel Medina <http://danielme.com>
 * /*ww  w.  jav  a2s  .  c  o  m*/
 * This file is part of "Android Paginated ListView Demo".
 * 
 * "Android Paginated ListView Demo" 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, version 3.
 *
 * "Android Paginated ListView Demo" 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 version 3
 * along with this program.  If not, see <http://www.gnu.org/licenses/gpl-3.0.html/>
 */

package com.danielme.blog.android.paginatedlistview;

import java.util.ArrayList;
import java.util.List;

/**
 * Test data.
 * @author danielme.com
 *
 */
public class Datasource
{
  //Singleton pattern
  private static Datasource datasource = null;
  
  private List<String> data = null;
  
  private static final int SIZE = 74;
  
  public static Datasource getInstance()
  {
    if (datasource == null)
    {
      datasource = new Datasource();
    }
    return datasource;
  }
  
  private Datasource()
  {
    data = new ArrayList<String>(SIZE);
    for (int i =1 ; i <= SIZE; i++)
    {
      data.add("row " + i);
    }    
  }
  
  public int getSize()
  {
    return SIZE;
  }
  
  /**
   * Returns the elements in a <b>NEW</b> list.
   */
  public List<String> getData(int offset, int limit)
  {
    List<String> newList = new ArrayList<String>(limit);
    int end = offset + limit;
    if (end > data.size())
    {
      end = data.size();
    }
    newList.addAll(data.subList(offset, end));
    return newList;    
  }

}

Java Source Code List