获得ListView中所点击的数据

最近写课设，被获取ListView中所点击的数据，必将他传给下一个Actyvity给烦到了，因为要写的与数据库有关联，且要获得数据跳来跳去的，所以写下这篇作为笔记

部分代码

 //获取数据库的数据并在列表中显示出来
        DatabaseHelper dbHelper = new DatabaseHelper(getActivity());
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        cursor = db.rawQuery("select class,cname from course,tcourse where course.cno=tcourse.tcno and tno=" + user, null);
        while (cursor.moveToNext()) {
            String class1 = cursor.getString(0);
            String cname = cursor.getString(1);
            
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("class1", class1);
            map.put("cname", cname);
            list.add(map);
        }

//适配器
       simpleAdapter = new SimpleAdapter(getActivity(),list, R.layout.classlist,
               new String[]{"class1","cname"}, new int[]{R.id.caltev1,R.id.caltev2});
       listview.setAdapter(simpleAdapter);

        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

//获取选择项的值
                Map<String,Object> map1= (Map<String, Object>) parent.getItemAtPosition(position);

//Toast.makeText(MainActivity.this,map1.get("class1").toString(),Toast.LENGTH_SHORT).show();

//这是获取点击项传入到下一个Actyvity的值
                Bundle bundle=new Bundle();
                Person p = new Person(map1.get("class1").toString(),user);
                bundle.putSerializable("classname",p);
                Intent intent=new Intent();
                intent.putExtras(bundle);
                intent.setClass(getActivity(),teastulist.class);
                startActivity(intent);
            }
        });