mw_onstop.java

    @Override
    public void onPause() {
        super.onPause();
        if (Util.SDK_INT <= 23) {
            releasePlayer();
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        releasePlayer();
    }

    private void releasePlayer() {
        if (null != player) {
            player.release();
            player = null;
        }
    }