android - ListView Inside a RecyclerView -

i creating listview inside recyclerview. populating recyclerview data fetched online. recyclerview populating properly. want populate listview @ run time when button clicked. defining onclicklistener button , on button click getting data , populating adapter set listview. data not reflecting in listview.

onclicklistener button

 holder.arrow_up.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {                 new loadclothes().execute(order.getorderid());         }     }); 

asynctask loading details listview

 private class loadclothes extends asynctask<string, void, string> {       @override     protected void onpreexecute() {         super.onpreexecute();     }      @override     protected string doinbackground(string... strings) {         string string = "";         try {             request request = new request.builder()                     .url(orderclothes)                     .addheader("token", baseapplication.gettoken())                     .addheader("orderid", strings[0])                     .build();             response response = client.newcall(request).execute();             string = response.body().string();             logger.d(string);         } catch (ioexception e) {             e.printstacktrace();         }         return string;     }      @override     protected void onpostexecute(string string) {         super.onpostexecute(string);          logger.d(string);          gson gson = new gson();         type type = new typetoken<list<orderedcloth>>() {         }.gettype();         cloths = gson.fromjson(string, type);         viewholder.listview.setvisibility(listview.visible);         customlistorderadapter adapter = new customlistorderadapter(context, cloths);         viewholder.listview.setadapter(adapter);         adapter.notifydatasetchanged();     } } 

are sure want that? seems design pattern problem. if going show additional data fetched http request, better way activity details.

however, i think problem "viewholder", getting variable?

a simple way solve seems passing listview asynctask:

private class loadclothes extends asynctask<string, void, string> {      private listview listview;      public loadcloathes(listview listview) {         this.listview = listview;     }      //...      @override     protected void onpostexecute(string string) {         super.onpostexecute(string);         //mostly same         //make sure somehow listview still available         listview.setadapter...     } } 

then run asynctask:

new loadclothes(listview).execute(order.getorderid()); 

as can see asynctask can take params in constructor, arguments in execute() method support asynctask cycle, still java class.