Play audio file from the assets directory

Question

I have the following code       AssetFileDescriptor afd   getAssets   openFd  AudioFile mp3    player   new MediaPlayer    player setDataSource afd getFileDescriptor     player prepare    player start      The problem is that  when I run this code  it starts playing all the audio files in the assets directory  in alphabetical order instead of just playing the audio file I requested  What am I doing wrong  Is there a better way to play audio files from the assets directory   Follow-up question   Is there a difference between keeping audio files in the assets directory and keeping them in the res raw directory  Besides the fact that they don t get ids if they are in the assets directory  If I move the audio files to the res raw folder then I have a problem with reusing MediaPlayers because there is no id parameter for setDataSource    I can t find a good guideline for handling this kind of problem

User · Answer

this works for me   public static class eSound Def     private static Android Media MediaPlayer mpBeep     public static void InitSounds  Android Content Res AssetManager Assets           mpBeep   new Android Media MediaPlayer         InitSound Beep  Assets           private static void InitSound Beep  Android Content Res AssetManager Assets           Android Content Res AssetFileDescriptor AFD       AFD   Assets OpenFd   Sounds beep-06 mp3         mpBeep SetDataSource  AFD FileDescriptor  AFD StartOffset  AFD Length        AFD Close         mpBeep Prepare        mpBeep SetVolume  1f  1f        mpBeep Looping   false         public static void PlaySound Beep           if  mpBeep IsPlaying    true               mpBeep Stop          mpBeep Reset          InitSound Beep               mpBeep Start            In main activity  on create   protected override void OnCreate  Bundle savedInstanceState       base OnCreate  savedInstanceState      SetContentView  Resource Layout lmain activity            eSound Def InitSounds  Assets              how to use in code  on button click     private void bButton Click  object sender  EventArgs e       eSound Def PlaySound Beep

User · Answer

This function will work properly        MediaPlayer m    assume  somewhere in the global scope       public void playBeep         try           if  m isPlaying                  m stop                m release                m   new MediaPlayer                       AssetFileDescriptor descriptor   getAssets   openFd  beepbeep mp3            m setDataSource descriptor getFileDescriptor    descriptor getStartOffset    descriptor getLength             descriptor close             m prepare            m setVolume 1f  1f           m setLooping true           m start          catch  Exception e            e printStackTrace

User · Answer

Fix of above function for play and pause    public void playBeep   String word         try               if     m    null                            m   new MediaPlayer                       else if  m    null amp  amp lastPlayed equalsIgnoreCase  word                m stop                m release                 m null              lastPlayed                 return           else if m    null               m release                 m   new MediaPlayer                       lastPlayed word           AssetFileDescriptor descriptor   context getAssets    openFd    rings     word     mp3             long                start        descriptor getStartOffset             long                end          descriptor getLength                 get title            songTitle songsList get songIndex  get  songTitle               set the data source         try                       m setDataSource   descriptor getFileDescriptor     start  end                      catch   Exception e                         Log e    MUSIC SERVICE    Error setting data source   e                       m prepare             m setVolume   1f  1f               m setLooping true           m start               catch   Exception e                 e printStackTrace

User · Answer

start sound   startSound  mp3 ba mp3      method  private void startSound String filename        AssetFileDescriptor afd   null      try           afd   getResources   getAssets   openFd filename         catch  IOException e            e printStackTrace              MediaPlayer player   new MediaPlayer        try           assert afd    null          player setDataSource afd getFileDescriptor    afd getStartOffset    afd getLength           catch  IOException e            e printStackTrace              try           player prepare          catch  IOException e            e printStackTrace              player start

User · Answer

player setDataSource afd getFileDescriptor   afd getStartOffset   afd getLength          Your version would work if you had only one file in the assets   directory  The asset directory contents are not actually  real files    on disk  All of them are put together one after another  So  if you do   not specify where to start and how many bytes to read  the player will   read up to the end  that is  will keep playing all the files in assets   directory

User · Answer

Here my static version   public static void playAssetSound Context context  String soundFileName        try           MediaPlayer mediaPlayer   new MediaPlayer             AssetFileDescriptor descriptor   context getAssets   openFd soundFileName           mediaPlayer setDataSource descriptor getFileDescriptor    descriptor getStartOffset    descriptor getLength             descriptor close             mediaPlayer prepare            mediaPlayer setVolume 1f  1f           mediaPlayer setLooping false           mediaPlayer start          catch  Exception e            e printStackTrace

[android] Play audio file from the assets directory

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