Android Open Source - JavNav Home Fragment

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
*//from  w w w  .jav a  2  s  .c  o m
*   JavNav 
*    a simple application for general use of the Texas A&M-Kingsville Campus. 
*    
*    Copyright (C) 2014  Manuel Gonzales Jr.
*
*    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 com.senior.fragments;
import java.util.ArrayList;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;

import com.senior.javnav.R;

import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.text.SpannableString;
import android.text.style.UnderlineSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;

public class HomeFragment extends ListFragment
{
  private ListView mListView;
  private View view;
  private TextView titletext;
  private Button reloadButton;
  private ProgressBar progress;
  
  public static int linkIndex;
  public static ArrayList<String> eventtitles;
  public static ArrayList<String> eventlinks = new ArrayList<String>();
  public static String TitleChosen;
  
  ArticleContent articles;

  @Override
  public void onActivityCreated(Bundle savedInstanceState)
  {
    Log.i("HomeFrag","Activity Created");
    super.onActivityCreated(savedInstanceState);
    getArticles();
  }
   
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
  {
    Log.i("HomeFrag","View Created"); 
    
    view=inflater.inflate(R.layout.home_fragment,container,false);
    
    titletext = (TextView)view.findViewById(R.id.calenderevents);
    
    SpannableString NewTitle = new SpannableString("Calendar Of Events");
    
    NewTitle.setSpan(new UnderlineSpan(), 0, NewTitle.length(), 0);
    
    titletext.setText(NewTitle);
    
    mListView=(ListView)view.findViewById(android.R.id.list);
    
    reloadButton = (Button)view.findViewById(R.id.refresh);
    reloadButton.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View arg0) 
      {
        getArticles();
      }
      
    });
    
    progress = (ProgressBar)view.findViewById(R.id.progress);
    
    return view;
  }
  
  private void getArticles()
  {
    reloadButton.setVisibility(View.INVISIBLE);
    progress.setVisibility(View.VISIBLE);
    new getDivs().execute();
  }
  
  private class getDivs extends AsyncTask<String, Void, ArrayList<String>>
  {
    boolean completed = false;
    protected ArrayList<String> doInBackground(String...params)
    {
      eventtitles= new ArrayList<String>();
      try
      {
        Document document = Jsoup.connect("http://www.tamuk.edu/").get();
        Elements calendar=document.select("div#calendar");
        Elements titles=calendar.select("a");
        Elements links = titles.select("[href]");
        
        for(int index = 0; index < titles.size()&&index < links.size(); index++)
        {
          if(links.get(index).toString().contains(".html"))
          {
            if(isCancelled())
              break;
            eventtitles.add(titles.get(index).text());
            eventlinks.add(links.get(index).attr("abs:href").toString());
          }
          
        }
        completed = true;
      }
      catch(Exception e)
      {
        completed = false;
        e.printStackTrace();
      }
      return eventtitles;
    }
    @Override
    protected void onPostExecute(ArrayList<String> strings)
    {
      try
      {
        Log.i("home frag","Results: "+eventtitles.size());
        mListView.setAdapter(new ArrayAdapter(getActivity(),android.R.layout.simple_list_item_1,eventtitles)
        {
          //Styling the items within the listview
          @Override
          public View getView(int position, View convertView, ViewGroup parent)
          {
            View view = super.getView(position,convertView,parent);
            TextView listItem = (TextView)view.findViewById(android.R.id.text1);
            listItem.setBackgroundColor(Color.BLACK);
            listItem.setTextColor(Color.WHITE);
            return view;
          }
        });
        
        //If the information was not complete downloaded then it will bring back the
        //reload button
        if(completed)
        {
          reloadButton.setVisibility(View.INVISIBLE);
          progress.setVisibility(View.INVISIBLE);
        }
        else
        {
          reloadButton.setVisibility(View.VISIBLE);
          progress.setVisibility(View.INVISIBLE);
        }
          
      }
      catch(Exception e)
      {
        Log.i("Home","Error on post execute");
      }
    }
  }
  
  public void onListItemClick(ListView mListView, View view, int position, long id)
  {
    ArticleContent articles = new ArticleContent();
      articles.loadArticleInfo(eventlinks.get(position), eventtitles.get(position));
      getFragmentManager().beginTransaction().addToBackStack(null).replace(R.id.container, articles).commit();
  }

}

Java Source Code List

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