android listview item中的按钮点击事件如何添加，请教大神

package com.example.studentsystembook;



import java.util.List;



import com.example.studentsystembook.Bookdao.BorrowedBook;

import com.example.studentsystembook.dao.BorrowedDao;

import com.example.studentsystembook.lose_book_list.myadapter;



import android.app.Activity;

import android.app.AlertDialog;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.AdapterViewFlipper;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;



public class lose_book_list extends Activity implements OnItemClickListener {



	private ListView lv;

	private List<BorrowedBook> borrow_books;



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.losebook_query_list);

		lv = (ListView) findViewById(R.id.lv_lose_books);



		SharedPreferences sp = getSharedPreferences("stunum",

				Context.MODE_PRIVATE);

		String stu_num = sp.getString("stu_num", "");



		BorrowedDao dao = new BorrowedDao(this);

		borrow_books = dao.findallbysnm(stu_num);

		lv.setAdapter(new myadapter());

		lv.setOnItemClickListener(this);



	}



	public class myadapter extends BaseAdapter {



		@Override

		public int getCount() {

			// TODO Auto-generated method stub

			return borrow_books.size();

		}



		@Override

		public Object getItem(int position) {

			// TODO Auto-generated method stub

			return null;

		}



		@Override

		public long getItemId(int position) {

			// TODO Auto-generated method stub

			return 0;

		}



		@Override

		public View getView(int position, View convertView, ViewGroup parent) {

			BorrowedBook book = borrow_books.get(position);

			View view = View.inflate(lose_book_list.this,

					R.layout.lose_book_list_item, null);



			// 設置textview中的顯示文本

			TextView b_num = (TextView) view.findViewById(R.id.tv_bnum_lose);

			b_num.setText("书号:" + book.getB_num());



			TextView tv_ISBN = (TextView) view.findViewById(R.id.tv_ISBN_lose);

			tv_ISBN.setText("ISBN:" + book.getISBN());



			TextView bname = (TextView) view.findViewById(R.id.bname_lose);

			bname.setText("书名：" + book.getB_name());



			TextView autor = (TextView) view.findViewById(R.id.autor_lose);

			autor.setText("作者：" + book.getB_autor());



			TextView publishment = (TextView) view

					.findViewById(R.id.publishment_lose);

			publishment.setText("出版社：" + book.getB_publishment());



			TextView tv_brtime = (TextView) view

					.findViewById(R.id.tv_brtime_lose);

			tv_brtime.setText("借时：" + book.getBorrow_time());



			TextView tv_ordertime = (TextView) view

					.findViewById(R.id.tv_ordertime_lose);

			tv_ordertime.setText("还时：" + book.getReturn_time());



			return view;

		}



	}



	@Override

	public void onItemClick(AdapterView<?> parent, View view, int position,

			long id) {

		if (position >= 0) {

			Intent intent = new Intent(this, text_view.class);

			startActivity(intent);

			

		}

	}

}