如何在不同的活动中过滤RecyclerView

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements Filterable {
    private List<Item> originalData; // 原始数据源
    private List<Item> filteredData; // 过滤后的数据源

    // 构造函数
    public MyAdapter(List<Item> data) {
        originalData = data;
        filteredData = data;
    }

    // 创建ViewHolder
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        // 创建视图项并返回ViewHolder
    }

    // 绑定数据到ViewHolder
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        // 绑定数据到视图项
    }

    // 获取数据项数量
    @Override
    public int getItemCount() {
        return filteredData.size();
    }

    // 获取过滤器实例
    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                String filterPattern = constraint.toString().toLowerCase().trim();
                FilterResults results = new FilterResults();

                if (filterPattern.isEmpty()) {
                    results.values = originalData;
                    results.count = originalData.size();
                } else {
                    List<Item> filteredList = new ArrayList<>();
                    for (Item item : originalData) {
                        // 根据过滤条件筛选数据项
                        if (item.getName().toLowerCase().contains(filterPattern)) {
                            filteredList.add(item);
                        }
                    }
                    results.values = filteredList;
                    results.count = filteredList.size();
                }

                return results;
            }

            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {
                filteredData = (List<Item>) results.values;
                notifyDataSetChanged(); // 刷新RecyclerView
            }
        };
    }

    // ViewHolder类
    public static class ViewHolder extends RecyclerView.ViewHolder {
        // ViewHolder的成员变量

        public ViewHolder(View itemView) {
            super(itemView);
            // 初始化ViewHolder
        }
    }
}

// 准备数据源
List<Item> data = new ArrayList<>();
// 添加数据项到data

// 创建适配器
MyAdapter adapter = new MyAdapter(data);

// 设置RecyclerView的布局管理器和适配器
RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);

// 获取过滤器实例
Filter filter = adapter.getFilter();

// 根据用户输入或其他条件，调用过滤器的filter()方法进行过滤操作
String filterText = "example";
filter.filter(filterText);