Android Open Source - MusicPlayer-OLD Playlist

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012-2013 Andrea De Cesare/*w  w w  . j  a  v  a2 s. c  om*/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.andreadec.musicplayer;

import java.util.*;
import android.content.*;
import android.database.*;
import android.database.sqlite.*;
import com.andreadec.musicplayer.database.*;

public class Playlist {
  private long id;
  private String name;
  private ArrayList<PlaylistSong> songs;
  
  public Playlist(long id, String name) {
    this.id = id;
    this.name = name;
    songs = new ArrayList<PlaylistSong>();
    
    PlaylistsDatabase playlistsDatabase = new PlaylistsDatabase();
    SQLiteDatabase db = playlistsDatabase.getReadableDatabase();
    Cursor cursor = db.rawQuery("SELECT idSong, uri, artist, title, hasImage FROM SongsInPlaylist WHERE idPlaylist="+id+" ORDER BY position", null);
    while(cursor.moveToNext()) {
      long songId = cursor.getLong(0);
      String uri = cursor.getString(1);
      String artist = cursor.getString(2);
      String title = cursor.getString(3);
      boolean hasImage = cursor.getInt(4)==1;
      PlaylistSong song = new PlaylistSong(uri, artist, title, songId, hasImage, this);
      songs.add(song);
    }
    cursor.close();
    db.close();
  }
  
  public void addSong(BrowserSong song) {
    long songId = -1;
    PlaylistsDatabase playlistsDatabase = new PlaylistsDatabase();
    SQLiteDatabase db = playlistsDatabase.getWritableDatabase();
    ContentValues values = new ContentValues();
    values.put("idPlaylist", id);
    values.put("uri", song.getUri());
    values.put("artist", song.getArtist());
    values.put("title", song.getTitle());
    values.put("hasImage", song.hasImage());
    try {
      songId = db.insertOrThrow("SongsInPlaylist", null, values);
    } catch(Exception e) {
    } finally {
      db.close();
    }
    
    if(songId==-1) return; // Something went wrong
    PlaylistSong playlistSong = new PlaylistSong(song.getUri(), song.getArtist(), song.getTitle(), songId, song.hasImage(), this);
    songs.add(playlistSong);
  }
  
  public void deleteSong(PlaylistSong song) {
    PlaylistsDatabase playlistsDatabase = new PlaylistsDatabase();
    SQLiteDatabase db = playlistsDatabase.getWritableDatabase();
    db.delete("SongsInPlaylist", "idSong="+song.getId(), null);
    db.close();
    songs.remove(song);
  }
  
  public void sort(int from, int to) {
    if(to>from) {
      Collections.rotate(songs.subList(from, to+1), -1);
    } else {
      Collections.rotate(songs.subList(to, from+1), +1);
    }
    PlaylistsDatabase playlistsDatabase = new PlaylistsDatabase();
    SQLiteDatabase db = playlistsDatabase.getWritableDatabase();
    for(int i=0; i<songs.size(); i++) {
      PlaylistSong song = songs.get(i);
      ContentValues values = new ContentValues();
      values.put("position", i);
      db.update("SongsInPlaylist", values, "idSong="+song.getId(), null);
    }
    db.close();
  }
  
  public void editName(String newName) {
    name = newName;
    PlaylistsDatabase playlistsDatabase = new PlaylistsDatabase();
    SQLiteDatabase db = playlistsDatabase.getWritableDatabase();
    ContentValues values = new ContentValues();
    values.put("name", newName);
    db.update("Playlists", values, "id="+id, null);
    db.close();
  }
  
  public long getId() {
    return id;
  }
  
  public String getName() {
    return name;
  }
  
  public ArrayList<PlaylistSong> getSongs() {
    return songs;
  }
  
  @Override
  public boolean equals(Object o) {
    if(!(o instanceof Playlist)) return false;
    Playlist p2 = (Playlist)o;
    return id==p2.id;
  }
}

Java Source Code List

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