如何实现无休止的列表RecyclerView？ [英] How to implement endless list with RecyclerView?

问题描述

我喜欢的ListView更改为<一个href="https://developer.android.com/reference/android/support/v7/widget/RecyclerView.html">RecyclerView.我怀念的的onScroll <一href="http://developer.android.com/reference/android/widget/AbsListView.OnScrollListener.html#onScroll">OnScrollListener在RecyclerView确定该用户滚动到列表的末尾。我如何知道用户滚动到列表的末尾，这样我可以从一个REST服务获取新的数据。

I like to change from ListView to RecyclerView. I miss the onScroll of the OnScrollListener at RecyclerView to determine that the user scrolled to the end of the list. How do I know that the user scrolls to the end of the list so that I can fetch new data from a Rest Service.

推荐答案

由于@Kushal，这是我是如何实现它

Thanks to @Kushal and this is how I implemented it

private boolean loading = true;
int pastVisiblesItems, visibleItemCount, totalItemCount;

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() 
{
    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) 
    {
        if(dy > 0) //check for scroll down
        {
            visibleItemCount = mLayoutManager.getChildCount();
            totalItemCount = mLayoutManager.getItemCount();
            pastVisiblesItems = mLayoutManager.findFirstVisibleItemPosition();

            if (loading) 
            {
                if ( (visibleItemCount + pastVisiblesItems) >= totalItemCount) 
                {
                    loading = false;
                    Log.v("...", "Last Item Wow !");
                    //Do pagination.. i.e. fetch new data
                }
            }
        }
    }
});

不要忘了添加

Don't forget to add

LinearLayoutManager mLayoutManager;
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);

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