Android BaseRecyclerViewAdapterHelper上拉加载更多

private boolean isErr = false; //是否加载错误
private int TOTAL_COUNTER = 16; //一共模拟加载16条数据，所有的数据总数
private int mCurrentCounter = 6; //当前的数据总数，因为第一次默认加载6个

//1.上拉加载
        mImgDetailsAdapter.setOnLoadMoreListener(new BaseQuickAdapter.RequestLoadMoreListener() {
        @Override public void onLoadMoreRequested() {
            imgDetailRecycler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (mCurrentCounter >= TOTAL_COUNTER) {
                        //数据全部加载完毕
                        mImgDetailsAdapter.loadMoreEnd();
                    } else {
                        if (!isErr) {
                            //成功获取更多数据
                            mImgDetailsAdapter.addData(getServerDatas());
                            mCurrentCounter = mImgDetailsAdapter.getData().size();
                            mImgDetailsAdapter.loadMoreComplete();
                        } else {
                            //获取更多数据失败 PullToRefreshUseActivity
                            isErr = true;
                            Toast.makeText(ImgDetailsActivity.this, "获取更多数据失败", Toast.LENGTH_LONG).show();
                            mImgDetailsAdapter.loadMoreFail();

                        }
                    }
                }

            }, 1500);
        }
    }, imgDetailRecycler);
//模拟从服务器获取数据
    public List<ImgDetails> getServerDatas(){
        ImgDetails details;
        List<ImgDetails> newDatas = new ArrayList<ImgDetails>();
        //for (int i = 0; i < 1; i++) {
            details = new ImgDetails();
            details.setUrl("http://t1.hxzdhn.com/uploads/tu/sm/201601/18/35.jpg");
            newDatas.add(details);
        //}
        return newDatas;
    }