请问有预加载功能吗？

[YangGui101]

自动加载好像是到最底才触发的，请问有自己设置的预加载吗？ 例如10条数据，我看到了视图第5条数据就触发加载更多。

[Archer-cat]

同问

[jiangzehui]

同问

[000zss]

同问

[guominfang]

private void initRefreshLayout() {
    binding.refreshLayout.setOnRefreshListener(refreshLayout -> {
        loadData(0);
    });
    binding.refreshLayout.setOnLoadMoreListener(refreshLayout -> {
        loadData(adapter.getCurrentPage() + 1);
    });
    binding.recycleView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            GridLayoutManager lm = (GridLayoutManager) recyclerView.getLayoutManager();
            if (lastVisibleItemPosition != lm.findLastVisibleItemPosition()) {
                lastVisibleItemPosition = lm.findLastVisibleItemPosition();
                Log.d(TAG, "onScrolled: lastVisibleItemPosition=" + lastVisibleItemPosition);
                if (adapter.getItemCount() - lastVisibleItemPosition < 10) {
                    // 提前预加载
                    loadData(adapter.getCurrentPage() + 1);
                }
            }
        }
    });

}

private int oldLoadPage = 0;

private void loadData(int page) {
    // 防止重复加载同一页数据
    if (page != 0 && page == oldLoadPage) return;
    oldLoadPage = page;
   // 访问网络拉取数据

}