setOnFocusChangeListener not working

cameraBtn.setOnFocusChangeListener(new View.OnFocusChangeListener() {
    @Override
    public void onFocusChange(View view, boolean hasFoous) {
        if(hasFoous){
            cameraBtn.setBackgroundResource(R.drawable.shape_circle_red);
        } else  {
            cameraBtn.setBackgroundResource(R.drawable.shape_circle);
        }
    }
});

포커스를 받았을 때 버튼의 모양이 달라지길 원했다.

하지만 setOnFocusChangeListener은 작동하지 않음

원하는 동작을 setOnFocusChangeListener로 하지않고 setOnTouchListener로 구현하니 

cameraBtn.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        int action=motionEvent.getAction();

        if(action==MotionEvent.ACTION_DOWN){
            cameraBtn.setBackgroundResource(R.drawable.shape_circle_red);
        } else  if(action==MotionEvent.ACTION_UP){
            cameraBtn.setBackgroundResource(R.drawable.shape_circle);
        }
        return false;
    }
});

동작됨