安卓系统中ArrayList的分页

public List<Item> getPage(int pageNumber, int pageSize) {
    int startIndex = (pageNumber - 1) * pageSize;
    int endIndex = Math.min(startIndex + pageSize, arrayList.size());
    
    if (startIndex >= arrayList.size() || startIndex < 0) {
        throw new IndexOutOfBoundsException("Invalid page number or page size");
    }
    
    return arrayList.subList(startIndex, endIndex);
}

// 示例：使用 RecyclerView 和 PagerSnapHelper 实现分页加载
RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);

PagerSnapHelper snapHelper = new PagerSnapHelper();
snapHelper.attachToRecyclerView(recyclerView);

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        if (!recyclerView.canScrollVertically(1)) {
            // 加载更多数据
            loadMoreData();
        }
    }
});