AudioTrack Android playing sounds from raw folder

Question

Is it possible to play wav files with AudioTrack from the resources folder raw? It tried many ways to reference the raw files in my Android project, but I got a lot of exceptions.

This is what I have now, but when I press the button, no sound plays.

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Button buttonPlayAudioTrack = (Button) findViewById(R.id.buttonPlayAudioTrack);
    buttonPlayAudioTrack.setOnClickListener(this);

    int minBufferSize = AudioTrack.getMinBufferSize(44100, AudioFormat.CHANNEL_CONFIGURATION_MONO, 
                        AudioFormat.ENCODING_PCM_16BIT);

    audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_CONFIGURATION_MONO, 
                     AudioFormat.ENCODING_PCM_16BIT, minBufferSize, AudioTrack.MODE_STREAM); 
}
public void onClick(View v) {
    // TODO Auto-generated method stub
    if(v.getId() == R.id.buttonPlayAudioTrack) 
        playSound();
}

private void playSound() {
    audioTrack.play();
    int i = 0;
    int bufferSize = 512;
    byte [] buffer = new byte[bufferSize];
    InputStream inputStream = getResources().openRawResource(R.raw.piano12);
    try {
        while((i = inputStream.read()) != -1)
            audioTrack.write(buffer, 0, i);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        inputStream.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

Answer 1

Everything is fine with your code, You just need to change

while((i = inputStream.read()) != -1) 

to

while((i = inputStream.read(buffer)) != -1)

Answer 2

... and you should place the audioTrack-play-call after writing PCM content into buffer ;)