Android模拟器没有声音Android Studio

Question

MediaPlayer player;

// Playing Sound
    public void playSound(View v){
        player = MediaPlayer.create(this, R.raw.song);
        player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                player.start();
                Log.e("start","player çalıştı");
            }
        });
        player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                player.release();
                Log.e("stop", "player durdu");
            }
        });
    }

我的代码在这里，使用此代码，我无法从物理和虚拟设备中听到任何声音。