如何在RecyclerView中实现交互式滚动条？

// 创建自定义滚动条视图
LinearLayout scrollbar = findViewById(R.id.scrollbar);
View indicator = findViewById(R.id.indicator);

// 监听RecyclerView的滚动事件
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        // 计算滚动条指示器的位置
        int scrollRange = recyclerView.computeVerticalScrollRange();
        int scrollOffset = recyclerView.computeVerticalScrollOffset();
        int scrollExtent = recyclerView.computeVerticalScrollExtent();
        int indicatorHeight = scrollbar.getHeight() * scrollExtent / scrollRange;
        int indicatorTop = scrollbar.getHeight() * scrollOffset / scrollRange;

        // 更新滚动条指示器的位置
        indicator.setLayoutParams(new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, indicatorHeight));
        indicator.setTranslationY(indicatorTop);
    }
});

// 响应滚动条的交互事件
indicator.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            // 计算RecyclerView的滚动位置
            int scrollRange = recyclerView.computeVerticalScrollRange();
            int scrollExtent = recyclerView.computeVerticalScrollExtent();
            int indicatorHeight = scrollbar.getHeight() * scrollExtent / scrollRange;
            int indicatorTop = (int) event.getY() - indicatorHeight / 2;
            int scrollOffset = scrollRange * indicatorTop / scrollbar.getHeight();

            // 滚动RecyclerView到相应的位置
            recyclerView.scrollToPosition(scrollOffset);
            return true;
        }
        return false;
    }
});