如何检测RecyclerView何时滚动到最顶部位置

RecyclerView recyclerView = findViewById(R.id.recyclerView);
LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        
        int firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition();
        if (firstVisibleItemPosition == 0) {
            // RecyclerView已经滚动到最顶部位置
            // 在这里执行你的逻辑操作
        }
    }
});