java - Pull to refresh returns the first position of the list -

i have 1 problem pull refresh, use com.handmark.pulltorefresh. , need add new elements list when see last element of list. make this:

view = inflater.inflate(r.layout.fragment_generalnews, container,                     false);             mpullrefreshlistview = (pulltorefreshlistview) view                     .findviewbyid(r.id.pull_refresh_list2);  .... // add end-of-list listener             mpullrefreshlistview                     .setonlastitemvisiblelistener(new onlastitemvisiblelistener() {                          @override                         public void onlastitemvisible() {                             if (generalactivity.razr <= 7.0) {                                 pagenumber += 1;                                 log.d("menu", "page2 = " + pagenumber);                                 newpage = "page/" + pagenumber + "/";                                 final int position = mpullrefreshlistview.getrefreshableview().getfirstvisibleposition()+1;                                 new mytask().execute();                                 log.d("list", "position of list = " + position);                                 mpullrefreshlistview.onrefreshcomplete();                                 mpullrefreshlistview.post(new runnable() {                                      @override                                     public void run() {                                         // todo auto-generated method stub                                         mpullrefreshlistview.getrefreshableview().setselection(position);                                         kfulist.setselection(position);                                     }                                 });                                 log.d("list", "list " + kfunews.tostring());                             }                         }                     }); 

in mytask() in onpostexecute refresh adapter:

kfulist = mpullrefreshlistview.getrefreshableview();                     kfulist.setadapter(newsadapter);                     kfulist = mpullrefreshlistview.getrefreshableview();                      // need use actual listview when registering                     // context menu                     registerforcontextmenu(kfulist);                     newsadapter.notifydatasetchanged(); 

when end of list, updated , add new elements, returns first element of list. , can not understand why.

we talking asynctask here. it's asynchronous, when mpullrefreshlistview.onrefreshcomplete() appends afer execution of task, task in fact not yet finished.

you should add in onpostexecute want affecting ui (onpostexecute executed in ui thread)

try :

public void onpostexecute(**whatever parameter**) 

  { kfulist = mpullrefreshlistview.getrefreshableview(); kfulist.setadapter(newsadapter); // useless // kfulist = mpullrefreshlistview.getrefreshableview();

    // need use actual listview when registering     // context menu     registerforcontextmenu(kfulist);     newsadapter.notifydatasetchanged();      log.d("list", "position of list = " + position);     mpullrefreshlistview.onrefreshcomplete();     mpullrefreshlistview.post(new runnable()     {         @override         public void run()         {             mpullrefreshlistview.getrefreshableview().setselection(position);             kfulist.setselection(position);         }     });     log.d("list", "list " + kfunews.tostring());           // [...] }