Android Open Source - Android-Paginated-ListView-Demo Load More List View Activity

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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>
 * //from  w w w  .j  a va  2 s .  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.activities;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;

import com.danielme.blog.android.paginatedlistview.CustomArrayAdapter;
import com.danielme.blog.android.paginatedlistview.Datasource;
import com.danielme.blog.android.paginatedlistview.R;

public class LoadMoreListViewActivity extends AbstractListViewActivity
{

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.endless);
    datasource = Datasource.getInstance();

    footerView = ((LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.footer_loadmore, null, false);
    getListView().addFooterView(footerView, null, false);
    setListAdapter(new CustomArrayAdapter(this, datasource.getData(0, PAGESIZE)));
    getListView().removeFooterView(footerView);

    getListView().setOnScrollListener(new OnScrollListener()
    {
      @Override
      public void onScrollStateChanged(AbsListView arg0, int arg1)
      {
        // nothing here
      }

      @Override
      public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount)
      {        
        if (load(firstVisibleItem, visibleItemCount, totalItemCount))
        {
          loading = true;
          footerView.findViewById(R.id.buttonLoadMore).setVisibility(View.VISIBLE);
          footerView.findViewById(R.id.progressBar1).setVisibility(View.GONE);
          getListView().addFooterView(footerView, null, false);
        }
      }
    });

    updateDisplayingTextView();

  }

  public void loadMore(View view)
  {
    footerView.findViewById(R.id.buttonLoadMore).setVisibility(View.GONE);
    footerView.findViewById(R.id.progressBar1).setVisibility(View.VISIBLE);
    (new LoadNextPage()).execute("");
  }

}

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