Android Open Source - LearnMusicNotes Utils

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Back to project page LearnMusicNotes.

License

The source code is released under:

GNU General Public License

Java Source Code

//   -----------------------------------------------------------------------------
//    Copyright 2010 Ferran Caellas Puig
/*ww  w.  j av  a2s .c  o  m*/
//    This file is part of Learn Music Notes.
//
//    Learn Music Notes 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.

//    Learn Music Notes 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 Learn Music Notes.  If not, see <http://www.gnu.org/licenses/>.
//   -----------------------------------------------------------------------------


package net.fercanet.LNM;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;
import android.content.Context;




class Score implements Comparable<Score> {
    int score;
    String name;
    String date;

    public Score(int score, String name, String date) {
        this.score = score;
        this.name = name;
        this.date = date;
    }
    

    @Override
    public int compareTo(Score o) {
        return score < o.score ? -1 : score > o.score ? 1 : 0;
    }
}


public class Utils {
  

  // Is this score in the top scores?
    public static Boolean isInTheTopScores(Integer userscore, Context context) {
      
    List<Score> scores = new ArrayList<Score>();
        
        String filecontent = getStringFromFile("halloffame", context);              // This file is formated in this way: user1,score1;user2,score2;user3,score3; ...
        
        if (filecontent != "") {
          String scoresarray[] = filecontent.split(";");                 // Split the string in "user,score" strings into an array
          
          for (int i = 0; i < scoresarray.length; i++){                   // Loop Through the scorearray, split user and score pairs and add them to the list
            String scorearray[];
            scorearray = scoresarray[i].split(",");  
            scores.add(new Score(Integer.parseInt(scorearray[0]), scorearray[1], scorearray[2]));
          }
        }
  
        Collections.sort(scores);
        ListIterator<Score> i = scores.listIterator(); 
        
        Preferences prefs = new Preferences(context); 
        
        if (i.hasNext() && scores.size()>=prefs.scoresnum) {
          Score worstscore=(Score)i.next();
          return (userscore >= worstscore.score) ? true : false;
        }
        else return true;    
    }
      
    
    // Save the score list to halloffame file
    private static void saveListInFile(List<Score> scores, Context context){
      
      ListIterator<Score> i = scores.listIterator(scores.size());
      
        FileOutputStream fos = null;
        
        try {
       fos = context.openFileOutput("halloffame", Context.MODE_PRIVATE);
       
     } catch (FileNotFoundException e1) {
       e1.printStackTrace();
     }
         
     int entries = 1;
     
     Preferences prefs = new Preferences(context); 
     
        while(i.hasPrevious() && entries<=prefs.scoresnum)
        {  
          Score entry=(Score)i.previous();

           String name = String.valueOf(entry.score) + "," + entry.name + "," + entry.date + ";";
       
       try {
         
         fos.write(name.getBytes());
         
       } catch (FileNotFoundException e) {
         e.printStackTrace();
       } catch (IOException e) {
         e.printStackTrace();
       }
       entries++;      
        }
        try {
          
          fos.close();
          
     } catch (IOException e) {
       e.printStackTrace();
     }
    }
    
    
    // Save the new user score into the file maintaining the score order (inverse, top scores up)
    public static void saveUserScore(Score userscore, Context context) {
      
    List<Score> scores = new ArrayList<Score>();
        
        String filecontent = getStringFromFile("halloffame", context);      // This file is formated in this way: user1,score1;user2,score2;user3,score3; ...
        
        if (filecontent != "") {
          String scoresarray[] = filecontent.split(";");             // Split the string in "user,score" strings into an array
          
          for (int i=0; i<scoresarray.length; i++){                   // Loop Through the scorearray, split user and score pairs and add them to the list
            String scorearray[];
            scorearray = scoresarray[i].split(",");  
            scores.add(new Score(Integer.parseInt(scorearray[0]), scorearray[1], scorearray[2]));
          }
        }
        scores.add(userscore);                                     // Add the new score into the list
        
        Collections.sort(scores);
        
        saveListInFile(scores, context);    
    }
    
    public static void reloadScores(Context context) {
        
    List<Score> scores = new ArrayList<Score>();
        
        String filecontent = getStringFromFile("halloffame", context);      // This file is formated in this way: user1,score1;user2,score2;user3,score3; ...
        
        if (filecontent != "") {
          String scoresarray[] = filecontent.split(";");             // Split the string in "user,score" strings into an array
          
          for (int i=0; i<scoresarray.length; i++){                   // Loop Through the scorearray, split user and score pairs and add them to the list
            String scorearray[];
            scorearray = scoresarray[i].split(",");  
            scores.add(new Score(Integer.parseInt(scorearray[0]), scorearray[1], scorearray[2]));
          }
        }
        
        Collections.sort(scores);
        
        saveListInFile(scores, context);    
    }

    // Returns the file content in a string
    public static String getStringFromFile(String file, Context context){
      FileInputStream fis;
        int ch;
        StringBuffer strContent = new StringBuffer("");
    try {
      fis = context.openFileInput(file);
       while((ch = fis.read()) != -1)
              strContent.append((char)ch);
      fis.close();
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return strContent.toString();
    }
    
}

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