Using AudioTrack in Android to play a WAV file

Question

I\'m working with Android, trying to make my AudioTrack application play a Windows .wav file (Tada.wav). Frankly, it shouldn\'t be this hard, but I\'m hearing a lot of stra

Answer 1

I found a lot of long answers to this question. My final solution, which given all the cutting and pasting is hardly mine, comes down to:

public boolean play() {

    int i = 0;
    byte[] music = null;
    InputStream is = mContext.getResources().openRawResource(R.raw.noise);

    at = new AudioTrack(AudioManager.STREAM_MUSIC, 44100,
        AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT,
        minBufferSize, AudioTrack.MODE_STREAM);

    try{
        music = new byte[512];
        at.play();

        while((i = is.read(music)) != -1)
            at.write(music, 0, i);

    } catch (IOException e) {
        e.printStackTrace();
    }

    at.stop();
    at.release();
    return STOPPED;
}

STOPPED is just a "true" sent back as a signal to reset the pause/play button. And in the class initializer:

public Mp3Track(Context context) {
    mContext = context;
    minBufferSize = AudioTrack.getMinBufferSize(44100,
        AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);
}

Context is just "this" from the calling activity. You can use a FileInputStream on the sdcard, etc. My files are in res/raw