Android Listview多选

Question

我知道有很多关于android listview多选的教程和解决方案。但是我在为我的实现找到正确的解决方案时遇到了麻烦。 我有来自json对象的listview，如下所示。关于以下实现的多个select的实现，我有一个问题。以下是扩展Asynctask的类。现在我想在其中实现多个选择。要直接多次选择删除多个项目。我怎么能采用我的代码。

我知道有很多实现，但我在项目的最后，我已经实现了所有列表视图，如下所示，现在无法更改所有内容。

提前致谢

 @Override
    protected JSONObject doInBackground(String... args) {
        user = db.getUserDetails();
        UserFunctions userFunction = new UserFunctions();
        JSONObject json = userFunction.getSiteList(user.get("uid"), user.get("uauth"));
        return json;
    }
    @Override
    protected void onPostExecute(JSONObject json) {
        try {
            if(json.has("error_msg")){
                pDialog.dismiss();
                String err = json.getString("error_msg");
                site_error.setText(err);
                site_error.setVisibility(View.VISIBLE);

                //Toast.makeText(getApplicationContext(), "Dont have any Location", Toast.LENGTH_LONG).show();
            }else{
                pDialog.dismiss();
                // Now since we dont have any error lets put this in the list view.
                site = json.getJSONArray(TAG_SITE);
                for(int i = 0; i < site.length(); i++){
                    JSONObject c = site.getJSONObject(i);
                    //put json obkject on variable
                    String id = c.getString(TAG_ID);
                    String location = c.getString(TAG_LOCATION);
                 // Adding value HashMap key => value
                    HashMap<String, String> map = new HashMap<String, String>();
                    map.put(TAG_ID, id);
                    map.put(TAG_LOCATION, location);
                    sitelist.add(map);
                 // Finding the list view
                    list=(ListView)findViewById(R.id.sitelist);
                 // Put data on listview content
                    ListAdapter adapter = new SimpleAdapter(SitePage.this, sitelist,
                            R.layout.site_list,
                            new String[] {TAG_LOCATION,TAG_ID}, new int[] {
                                    R.id.siteLocation});
                    list.setAdapter(adapter);
                 // List View click event
                    list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                        @Override
                        public void onItemClick(AdapterView<?> parent, View view,
                                                int position, long id) {
                            /*Open the new activity for single transaction detail*/
                            Intent intent = new Intent(SitePage.this, AddNewSite.class);
                            intent.putExtra("site", sitelist.get(+position).get("site_location"));
                            intent.putExtra("siteid", sitelist.get(+position).get("site_id"));
                            startActivity(intent);
                           //Toast.makeText(SitePage.this, "You Clicked at "+sitelist.get(+position).get("site_id"), Toast.LENGTH_SHORT).show();
                        }
                    });
                }
            }   

        }catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }