Android声音播放嘈杂且发出嘶哑声

Question

I am having problems with playing sound on android with the SoundPool , this works nicely with the MediaPlayer class. Why I can't use the MediaPlayer class is because it's not supporting the change of the sound pitch or speed.

The use case: Sound is played on background and it will be changed based on the user input.

The current problem: Does not play the sound correctly and freezes the application.

Question: What would be correct way to handle this situation, should the background sound played in separate thread and the communication of changing the sound volume should be done using Handler and messages ?

@Override
public void surfaceCreated(SurfaceHolder holder) {

    soundPool = new SoundPool(3, AudioManager.STREAM_MUSIC, 0);
    RAIN_SOUND_ID =  soundPool.load(getContext(), R.raw.rain, 1);

    new Thread(new Runnable() {
        @Override
        public void run() {


            soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {

                @Override
                public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
                    if (sampleId == RAIN_SOUND_ID) {
                        soundPool.play(RAIN_SOUND_ID, 1f, 1f, 10, -1, 1);
                    }
                }
            });
        }
    }).start();
 }

Answer 1

The SoundPool class actually creates and manages it's own thread pool behind the scenes, for playing it's sounds. So you can simplify your code to remove your additional threading as a potential issue.