Android Open Source - wherewithal Filer

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License

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

package com.curchod.domartin;
/*from   w w  w .java 2  s .  c om*/
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Vector;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;

import com.curchod.dto.PlayerInfo;

import android.content.Context;
import android.util.Log;

public class Filer 
{

  private static final String DEBUG_TAG = "Filer";
  
  /**
   * Open the local playrs.xml file and add PlayerInfo object for each player entry.
   * @param filename
   * @param context_wrapper
   * @return
   */
  public Vector <PlayerInfo> getPlayers(final Context context)
    { 
      final Vector <PlayerInfo> players = new Vector <PlayerInfo> ();
      final String method = "getPlayers(filename)"; 
      Log.i(DEBUG_TAG, method+": start parse");
      new Thread() 
      {
            public void run() 
            {
              FileInputStream fis = null;
        try 
        {
          fis = context.openFileInput("players.xml");
          Log.i(DEBUG_TAG, method+": fis "+fis.available());
        } catch (FileNotFoundException e1) 
        {
          Log.i(DEBUG_TAG, method+": fnfe");
          e1.printStackTrace();
        } catch (java.io.IOException ioe)
        {
          Log.i(DEBUG_TAG, method+": ioe");
          ioe.printStackTrace();
        }
                try 
                {
                  boolean capture = false;
                  String tag = "";String name = "";int score = 0;String id = "";
                    XmlPullParserFactory parserCreator = XmlPullParserFactory.newInstance();
                    XmlPullParser parser = parserCreator.newPullParser();
                    parser.setInput(fis, null);
                    int parser_event = parser.getEventType();
                    while (parser_event != XmlPullParser.END_DOCUMENT) 
                    {
                        switch (parser_event) 
                        {
                        case XmlPullParser.TEXT:
                           Log.i(DEBUG_TAG, method+"text event: "+parser.getText());
                          if (capture = true)
                          {
                            if (tag!=null)
                            {
                              String value = parser.getText();
                              if (tag.equals("name"))
                              {
                                name = value;
                                Log.i(DEBUG_TAG, method+": name "+name);
                              } else if (tag.equals("score"))
                              {
                                score = Integer.parseInt(value);
                                Log.i(DEBUG_TAG, method+": score "+score);
                              } else if (tag.equals("id"))
                              {
                                id = value;
                                Log.i(DEBUG_TAG, method+": id "+id);
                              } else if (tag.equals("icon"))
                              {
                                PlayerInfo player_info = new PlayerInfo(name, score, id, value);
                                players.add(player_info);
                                Log.i(DEBUG_TAG, method+": name "+name+" id "+id+" icon "+value);
                              }
                              Log.i(DEBUG_TAG, method+": should be here");
                            }
                            capture = false;
                            tag = null;
                            Log.i(DEBUG_TAG, method+": reset capture");
                          }
                            
                        case XmlPullParser.START_TAG:
                          tag = parser.getName();
                          capture = true;
                          Log.i(DEBUG_TAG, method+": start_tag. set capture");
                        }
                        parser_event = parser.next();
                    }
                } catch (Exception e) 
                {
                  Log.i(DEBUG_TAG, method+": (not) exception(al)");
                  e.printStackTrace();
                }
            }
      }.start();
      Log.i(DEBUG_TAG, method+": finished");
      return players;
    }
  
  /**
     * Write all the PlayerInfo objects as xml elements
     * @param path_to_players_files
     * @param name
     * @param id
     */
    public void savePlayersFile(Vector <PlayerInfo> players, Context context)
    {
      String method = "savePlayersFile(players,context)";
        Log.i(DEBUG_TAG, method+": Using a string buffer, we create the initial players.xml file with a new entry for the first player with a default icon name.");
      try 
      {
        FileOutputStream fos = context.openFileOutput("players.xml", Context.MODE_PRIVATE);
        Log.i(DEBUG_TAG, method+": FD "+fos.getFD());
          try
          {
            StringBuffer sb = new StringBuffer();
        sb.append("<players>");
        for (int i=0;i<players.size();i++)
        {
          PlayerInfo info = (PlayerInfo)players.get(i);
          sb.append("<player>");
          sb.append("<name>"+info.getName()+"</name>");
          sb.append("<id>"+info.getId()+"</id>");
          sb.append("<icon>"+info.getIcon()+"</icon>");
          sb.append("</player>");
        }
        sb.append("</players>");
        fos.write(new String(sb).getBytes());
        fos.close();
        Log.i(DEBUG_TAG, method+": done");
          }catch(FileNotFoundException e)
          {
              Log.e(DEBUG_TAG, "FileNotFoundException");
      } catch (IOException e1) 
      {
        Log.e(DEBUG_TAG, "IOException");
        e1.printStackTrace();
      }
    } catch (IOException e) 
    {
      e.printStackTrace();
    }
    }
    
    public void changePlayerIcon(String id, String new_icon, Context context)
    {
      String method = "changePlayerIcon(id,new_icon,context)";
      Vector <PlayerInfo> new_players = new Vector <PlayerInfo> ();
      Vector <PlayerInfo> players = getPlayers(context);
      Log.i(DEBUG_TAG, method+": players "+players.size());
      for (int i = 0; i < players.size(); i++)
      {
        PlayerInfo player = (PlayerInfo)players.get(i);
        String this_id = player.getId();
        if (this_id.equals(id))
        {
          player.setIcon(new_icon);
        }
        new_players.add(player);
      }
      Log.i(DEBUG_TAG, method+": new_players "+new_players.size());
      savePlayersFile(new_players, context);
    }
    
  
}
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