如果recyclerview没有占据全屏高度,则Android RecyclerView Pagination无法正常工作

时间:2017-09-08 11:04:14

标签: android android-recyclerview

我有一个带有底部标签栏的recyclerview我已经尝试使用大量的代码片段实现这一点但事件不会被调用 这就是我尝试它的方式,首先我创建了一个Listener,然后在我的片段中使用它。

public abstract class EndlessRecyclerViewScrollListener extends RecyclerView.OnScrollListener {
    public static String TAG = EndlessRecyclerViewScrollListener.class
            .getSimpleName();

    private int previousTotal = 0;
    private boolean loading = true;
    private int visibleThreshold = 5;
    int firstVisibleItem, visibleItemCount, totalItemCount;

    private int current_page = 1;

    private LinearLayoutManager mLinearLayoutManager;

    public EndlessRecyclerViewScrollListener(
            LinearLayoutManager linearLayoutManager) {
        this.mLinearLayoutManager = linearLayoutManager;
    }

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);

        visibleItemCount = recyclerView.getChildCount();
        totalItemCount = mLinearLayoutManager.getItemCount();
        firstVisibleItem = mLinearLayoutManager.findFirstVisibleItemPosition();

        if (loading) {
            if (totalItemCount > previousTotal) {
                loading = false;
                previousTotal = totalItemCount;
            }
        }
        if (!loading
                && (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
            // End has been reached

            // Do something
            current_page++;

            onLoadMore(current_page);

            loading = true;
        }
    }

    public abstract void onLoadMore(int current_page);
}

这是我在片段中写的代码

rv_influencer.addOnScrollListener(new EndlessRecyclerViewScrollListener((linearLayoutManager)) {
    @Override
    public void onLoadMore(int current_page) {
        page_no++;
        getInfluencerData();
        Toast.makeText(getActivity(), "Scroll", Toast.LENGTH_LONG).show();
    }

});

0 个答案:

没有答案