Android Open Source - MusicPlayer-OLD Index Folder Service

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012-2013 Andrea De Cesare//  www.ja va 2s.co m
 *
 * 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.io.*;

import com.andreadec.musicplayer.database.*;
import com.andreadec.musicplayer.filters.*;

import android.app.*;
import android.content.*;
import android.database.sqlite.*;
import android.os.*;
import android.support.v4.app.*;

/* This service indexes a folder and all its subfolders */
/* The operation may require some time, depending on the number of audio files in the directories */
public class IndexFolderService extends IntentService {
  private NotificationManager notificationManager;
  private Notification notification;
  private SQLiteDatabase db;
  
  public IndexFolderService() {
    super("IndexFolderService");
  }
  
  @Override
  public void onCreate () {
    super.onCreate();
    notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setSmallIcon(android.R.drawable.stat_sys_download);
    notificationBuilder.setContentTitle(getResources().getString(R.string.app_name));
    notificationBuilder.setContentText(getResources().getString(R.string.indexingWait));
    notificationBuilder.setOngoing(true);
    notification = notificationBuilder.build();
    notificationManager.notify(Constants.NOTIFICATION_INDEXING_ONGOING, notification);
  }
  
  @Override
  public void onDestroy() {
    super.onDestroy();
    notificationManager.cancel(Constants.NOTIFICATION_INDEXING_ONGOING);    
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setSmallIcon(android.R.drawable.stat_sys_download_done);
    notificationBuilder.setContentTitle(getResources().getString(R.string.app_name));
    notificationBuilder.setContentText(getResources().getString(R.string.indexingCompleted));
    notificationManager.notify(Constants.NOTIFICATION_INDEXING_COMPLETED, notificationBuilder.build());
  }

  @Override
  protected void onHandleIntent(Intent intent) {
    PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "IndexFolderService");
    wakeLock.acquire();
    
    try {
      SongsDatabase songsDatabase = new SongsDatabase();
      db = songsDatabase.getWritableDatabase();
      
      File folder = new File(intent.getStringExtra("folder"));
      clearSongsDatabase();
      index(folder);
      
      db.close();
    } catch(Exception e) {} // Just to be sure the wake lock is always released, also if something wrong happens.
    
    wakeLock.release();
  }

  private void clearSongsDatabase() {
    SQLiteDatabase db = new SongsDatabase().getWritableDatabase();
    db.delete("Songs", "", null);
    db.close();
  }
  
  private void index(File folder) {
    File files[] = folder.listFiles(new AudioFileFilter());
    File subfolders[] = folder.listFiles(new DirectoryFilter());
    
    for(File subfolder : subfolders) {
      if(subfolder!=null && subfolder.canRead()) {
        index(subfolder);
      }
    }
    
    for (File file : files) {
      String uri = file.getAbsolutePath();
      BrowserSong song = new BrowserSong(file.getAbsolutePath(), null);
      ContentValues values = new ContentValues();
      values.put("uri", uri);
      values.put("artist", song.getArtist());
      values.put("title", song.getTitle());
      Integer trackNumber = song.getTrackNumber();
      if(trackNumber==null) trackNumber=-1;
      values.put("trackNumber", trackNumber);
      values.put("hasImage", song.hasImage());
      db.insertWithOnConflict("Songs", null, values, SQLiteDatabase.CONFLICT_REPLACE);
    }
  }
}

Java Source Code List

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