解决recyclerView.setOnScrollChangeListener只能只能在api23以上使用问题

//使用这个方法替代
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {        super.onScrollStateChanged(recyclerView, newState);        //onScrollStateChanged will be fire every time you scroll        //Perform your operation here        int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();        if (lastVisibleItemPosition + 1 == adapter.getItemCount()) {            //此处做分页时可以用到，监听recyclerView滑动到底部        }    }});