滚动时更改RecyclerView项目大小

// 初始化RecyclerView
RecyclerView recyclerView = findViewById(R.id.recyclerView);

// 设置LayoutManager
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);

// 设置ItemDecoration
RecyclerView.ItemDecoration itemDecoration = new MyItemDecoration();
recyclerView.addItemDecoration(itemDecoration);

// 添加滚动监听器
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        
        // 获取当前可见的列表项
        int firstVisibleItemPosition = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
        int lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
        
        for (int i = firstVisibleItemPosition; i <= lastVisibleItemPosition; i++) {
            // 根据滚动位置和偏移量计算列表项的大小
            int newSize = calculateNewSize(i, dx, dy);
            
            // 获取列表项的LayoutParams并设置新的大小
            RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) recyclerView.getChildAt(i).getLayoutParams();
            layoutParams.height = newSize;
            recyclerView.getChildAt(i).setLayoutParams(layoutParams);
        }
    }
});

// 自定义ItemDecoration
class MyItemDecoration extends RecyclerView.ItemDecoration {
    // 实现自定义的分割线、边距等效果
    // ...
}

// 计算新的列表项大小的方法
int calculateNewSize(int position, int dx, int dy) {
    // 根据滚动位置和偏移量计算新的大小
    // ...
    return newSize;
}