Question

I generate a midi file and write it like this:

File output = new File("exampleout.mid");

I think I might need to change this, so it is in the right folder (just a readable/writable folder, perhaps Music/ )

Next I want to play this midi file with MediaPlayer, but I cannot figure out how to load the file.

mediaPlayer = MediaPlayer.create(this, R.raw.test3);

Only loads from the read only directory /res/raw. But if I try something like:

mediaPlayer = MediaPlayer.create(this, "file://exampleout");

It does not work because create needs an integer as input. I experimented with AssetFileDescriptor, but haven’t figured it out yet.

Meanwhile, I want to generate a new midi file and load it in mediaPlayer (chained) to play when the first file finishes playing.

MediaPlayer  mediaPlayer = MediaPlayer.create(Activity.this,R.raw.a1);
mediaPlayer.setOnCompletionListener(new musicCompletionListener());
mediaPlayer.start();
private class musicCompletionListener implements OnCompletionListener {
    @Override
    public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.setDataSource(WHATTOPUTHERE)
        mediaPlayer.release();
    }
}

My Problem is really how to call the file. I cannot use strings apparantly, and the r.raw directory is not possible due to its read only nature. I feel the solution is not so difficult, but I am just easing into java from c++, any help is much appreciated!

Answer 1

I stored the file in the cache dir, that works!

File output = new File(getCacheDir() + "/exampleout.mid");

And then calling the file:

    String filePath = null;
    File file = null;
    FileInputStream inputStream = null;
try {
           filePath = getCacheDir() + "/exampleout.mid";
           file = new File(filePath);

           inputStream = new FileInputStream(file);
           if(inputStream.getFD().valid())
           {
               System.out.println("Valid!");
           }
        } catch (Exception e1) {
            e1.printStackTrace();
            System.exit(-1);
        }

       try {
         mediaPlayer = new MediaPlayer();
        mediaPlayer.setDataSource(inputStream.getFD());
        inputStream.close();
    } catch (Exception e1) {
        e1.printStackTrace();
        System.exit(-1);
    }

    try {
        mediaPlayer.prepare();
    } catch (IllegalStateException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }