按钮单击操作在android listview

Question

我正在开发一个Android应用程序，其功能如下         管理员创建数据并将其保存到数据库中然后用户通过应用程序访问相同的数据，当它向用户显示数据时，我从管理员已经保存的数据库中获取数据我在列表视图中显示数据，而listview有按钮当用户点击按钮时，每行都不会进入下一个活动。当用户点击列表视图中的按钮时，活动应该转到下一个活动。我该怎么做？

//java activity
public class MainActivity extends ActionBarActivity {

         String myJSON;
         SimpleAdapter adapter;
         Button btn;

         private static final String TAG_RESULTS = "result";
         private static final String TAG_NAME = "sname";
         private static final String TAG_PRICE = "sprice";

         JSONArray peoples = null;

         ArrayList<HashMap<String, String>> personList;
         // ArrayList<HashMap<String, String>> personList = new ArrayList<HashMap<String, String>>();

         ListView list, listView;

         @Override
         protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.activity_main);
             list = (ListView) findViewById(R.id.listView_search);
             btn = (Button) findViewById(R.id.button3_book);

             personList = new ArrayList<HashMap<String, String>>();
             getData();

             // Listview on item click listener
             list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

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

                     Intent zoom=new Intent(parent.getContext(), Details.class);
                     parent.getContext().startActivity(zoom);

                 }
             });

         }

        protected void showList(){
            try {
                JSONObject jsonObj = new JSONObject(myJSON);
                peoples = jsonObj.getJSONArray(TAG_RESULTS);

                for(int i=0;i<peoples.length();i++){
                    JSONObject c = peoples.getJSONObject(i);
                    String sname = c.getString(TAG_NAME);
                    String sprice = c.getString(TAG_PRICE);

                    HashMap<String,String> persons = new HashMap<String,String>();

                    persons.put(TAG_NAME,sname);
                    persons.put(TAG_PRICE,sprice);

                    personList.add(persons);
                }

                ListAdapter adapter = new SimpleAdapter(
                        MainActivity.this, personList, R.layout.search_item,
                        new String[]{TAG_NAME,TAG_PRICE},
                        new int[]{ R.id.textView8_sellernm, R.id.textView19_bprice}
                );

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

                        Intent i=new Intent(MainActivity.this,Details.class);
                        startActivity(i);
                    }
                });

            } catch (JSONException e) {
                e.printStackTrace();
            }

        }

        public void getData(){
            class GetDataJSON extends AsyncTask<String, Void, String> {

                @Override
                protected String doInBackground(String... params) {
                    DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
                    HttpPost httppost = new HttpPost("http://example.com/User/reg/listview.php");

                    // Depends on your web service
                    httppost.setHeader("Content-type", "application/json");

                    InputStream inputStream = null;
                    String result = null;
                    try {
                        HttpResponse response = httpclient.execute(httppost);
                        HttpEntity entity = response.getEntity();

                        inputStream = entity.getContent();
                        // json is UTF-8 by default
                        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
                        StringBuilder sb = new StringBuilder();

                        String line = null;
                        while ((line = reader.readLine()) != null)
                        {
                            sb.append(line + "\n");
                        }
                        result = sb.toString();
                    } catch (Exception e) {
                        // Oops
                    }
                    finally {
                        try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
                    }
                    return result;
                }

                @Override
                protected void onPostExecute(String result){
                    myJSON=result;
                    showList();
                }
            }
            GetDataJSON g = new GetDataJSON();
            g.execute();
        }
    }