使用CursorLoader时在RecyclerView项目中单击光标

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements LoaderManager.LoaderCallbacks<Cursor> {
    private Context mContext;
    private Cursor mCursor;

    public MyAdapter(Context context) {
        mContext = context;
        // 初始化CursorLoader
        ((AppCompatActivity) mContext).getSupportLoaderManager().initLoader(0, null, this);
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        // 创建ViewHolder
        View view = LayoutInflater.from(mContext).inflate(R.layout.item_layout, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        // 绑定数据到ViewHolder
        mCursor.moveToPosition(position);
        String data = mCursor.getString(mCursor.getColumnIndexOrThrow("data"));
        holder.textView.setText(data);
    }

    @Override
    public int getItemCount() {
        // 返回项数
        return mCursor != null ? mCursor.getCount() : 0;
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        // 创建CursorLoader
        return new CursorLoader(mContext, Uri.parse("content://com.example.provider/data"), null, null, null, null);
    }

    @Override
    public void onLoadFinished(@NonNull Loader<Cursor> loader, Cursor data) {
        // 数据加载完成后更新Cursor
        mCursor = data;
        notifyDataSetChanged();
    }

    @Override
    public void onLoaderReset(@NonNull Loader<Cursor> loader) {
        // 重置Cursor
        mCursor = null;
        notifyDataSetChanged();
    }

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        public TextView textView;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text_view);
            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            // 获取被点击项的位置
            int position = getAdapterPosition();
            if (position != RecyclerView.NO_POSITION) {
                // 移动光标到对应的项上
                mCursor.moveToPosition(position);
                // 执行相应的操作
                // ...
            }
        }
    }
}