AudioTrack Android playing sounds from raw folder

问题

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();
    }
}

回答1:

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

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

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

来源：https://stackoverflow.com/questions/12263671/audiotrack-android-playing-sounds-from-raw-folder

标签

android

inputstream

audiotrack