Android Open Source - MOA-Player Music Service

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Back to project page MOA-Player.

License

The source code is released under:

MIT License

Java Source Code

package us.reimus.moaplayer;
/*  w  ww  .jav a  2 s . co  m*/
import java.io.File;
import java.util.ArrayList;
import java.util.EmptyStackException;
import java.util.Random;

import android.app.Notification;
import android.app.PendingIntent;
import android.app.Service;
import android.content.ContentUris;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Binder;
import android.os.Environment;
import android.os.IBinder;
import android.os.PowerManager;
import android.util.Log;

public class MusicService extends Service implements
MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener,
MediaPlayer.OnCompletionListener {
  private MediaPlayer player;   // Media player
  private ArrayList<Song> songs;   // Song list
  private int songPosn;      // Current position
  private final IBinder musicBind = new MusicBinder();
  private String songTitle = "";
  private static final int NOTIFY_ID=1;
  private boolean shuffle = false;
  private Random rand;
  private Song songToBeMoved = null;
  private String sdCard = Environment.getExternalStorageDirectory().toString();
  private String targetDirectory = null;
  
  public void onCreate() {
    // Create the service.
    super.onCreate();
    songPosn = 0;
    player = new MediaPlayer();
    rand = new Random();
    
    initMusicPlayer();
  }
  
  @Override
  public void onDestroy() {
    stopForeground(true);
  }
  
  public void initMusicPlayer() {
    // Set player properties.
    player.setWakeMode(getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
    player.setAudioStreamType(AudioManager.STREAM_MUSIC);
    
    // Set class listeners.
    player.setOnPreparedListener(this);
    player.setOnCompletionListener(this);
    player.setOnErrorListener(this);
  }
  
  public void setList(ArrayList<Song> theSongs) {
    songs=theSongs;
  }
  
  public class MusicBinder extends Binder {
    MusicService getService() {
        return MusicService.this;
    }
  }
   
  @Override
  public IBinder onBind(Intent arg0) {
      return musicBind;
  }
  
  @Override
  public boolean onUnbind(Intent intent) {
    player.stop();
    player.release();
    return false;
  }

  // TODO: To ensure that your app does not interfere with other 
  //     audio services on the user's device, you should enhance 
  //     it to handle audio focus gracefully. Make the Service 
  //     class implement the AudioManager.OnAudioFocusChangeListener 
  //     interface. In the onCreate method, create an instance of 
  //     the AudioManager class and call requestAudioFocus on it. 
  //     Finally, implement the onAudioFocusChange method in your 
  //     class to control what should happen when the application 
  //     gains or loses audio focus. See the Audio Focus section in 
  //     the Developer Guide for more details. 
  @Override
  public void onCompletion(MediaPlayer mp) {
    if (player.getCurrentPosition() > 0) {
      mp.reset();
      playNext();
    }
  }

  @Override
  public boolean onError(MediaPlayer mp, int what, int extra) {
    mp.reset();
    return false;
  }

  // Copied from: http://code.tutsplus.com/tutorials/create-a-music-player-on-android-user-controls--mobile-22787
  @Override
  public void onPrepared(MediaPlayer mp) {
    // Start playback.
    mp.start();
    
    // The PendingIntent class will take the user back to the 
    // main Activity class when they select the notification.
    Intent notIntent = new Intent(this, MainActivity.class);
    notIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendInt = PendingIntent.getActivity(this, 0,
        notIntent, PendingIntent.FLAG_UPDATE_CURRENT);
     
    Notification.Builder builder = new Notification.Builder(this);
     
    builder.setContentIntent(pendInt)
      .setSmallIcon(R.drawable.play)
      .setTicker(songTitle)
      .setOngoing(true)
      .setContentTitle("Playing")
      .setContentText(songTitle);
    @SuppressWarnings("deprecation")
    Notification not = builder.getNotification(); // For API min used builder.build();
     
    startForeground(NOTIFY_ID, not);
  }
  
  public void setDirectory(String directory) {
    // Move song to new directory
    if (songToBeMoved != null) {
      targetDirectory = directory;
      /*
      File sourceLocation = new File (songToBeMoved.getFileLocation());
      File targetLocation = new File (sdCard + "/Music/" + directory);
      try {
        if(sourceLocation.renameTo(targetLocation)) {
          Log.d("dvp", "Move file sucessful.");
        } else {
          Log.d("dvp", "Move file failed.");
        }
      } catch (NullPointerException e) {
        e.printStackTrace();
      } catch (Exception e) {
        e.printStackTrace();
      }*/
    }
  }
  
  private String getFileExtention(String fileLocation) {
    int lastIndexOf = fileLocation.lastIndexOf(".");
    if (lastIndexOf == -1) {
      throw new EmptyStackException();
    }
    return fileLocation.substring(lastIndexOf);
  }
  
  public void moveSong() {
    if ( (songToBeMoved!=null) && (targetDirectory!=null) ) {
      File sourceLocation = new File (songToBeMoved.getFileLocation());
      File targetLocation = new File (sdCard + "/Music/" + targetDirectory + "/" + songToBeMoved.getTitle() + getFileExtention(songToBeMoved.getFileLocation()));
      Log.d("dvp", "SOURCE: " + sourceLocation);
      Log.d("dvp", "TARGET: " + targetLocation);
      try {
        if(sourceLocation.renameTo(targetLocation)) {
          Log.d("dvp", "Move file sucessful.");
        } else {
          Log.d("dvp", "Move file failed.");
        }
      } catch (NullPointerException e) {
        e.printStackTrace();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
    // Remove selected directory. BUG
    targetDirectory = null;
  }
  
  public void playSong() {
    moveSong();
    
    
    // Play a song.
    player.reset();
    Song playSong = songs.get(songPosn); // Get song
    songToBeMoved = playSong;
    songTitle = playSong.getTitle();
    long currSong = playSong.getID();  //Get song Id
    Uri trackUri = ContentUris.withAppendedId(android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, currSong);  // Set URI    
    
    try {
      player.setDataSource(getApplicationContext(), trackUri);
    }
    catch (Exception e) {
      Log.e("MUSIC SERVICE", "Error setting data source", e);
    }
    player.prepareAsync();
  }
  
  public void setSong(int songIndex) {
    songPosn = songIndex;
  }
  
  public int getPosn() {
    return player.getCurrentPosition();
  }
     
  public int getDur() {
    return player.getDuration();
  }
     
  public boolean isPng() {
    return player.isPlaying();
  }
     
  public void pausePlayer() {
    player.pause();
  }
     
  public void seek(int posn) {
    player.seekTo(posn);
  }
     
  public void go() {
    player.start();
  }
  
  public void playPrev() {
    songPosn--;
    if (songPosn < 0) songPosn=songs.size()-1;
    playSong();
  }
  
  public void playNext() {

    if (shuffle) {
      int newSong = songPosn;
      while (newSong == songPosn) {
        newSong = rand.nextInt(songs.size());
      }
      songPosn = newSong;
    }
    else {
      songPosn++;
      if (songPosn >= songs.size()) songPosn = 0;
    }
    playSong();
  }
  
  // Toggles shuffle setting.
  public void setShuffle() {
    if (shuffle) shuffle = false;
    else shuffle = true;
  }
}

Java Source Code List

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