android - showAsDropDown but upwards like spinner -

i have used popup listview work spinner .i want pop upwards spinner when @ bottom of screen . have tried :

 popupwindowdogs.showasdropdown(buttonshowdropdown,5,0); 

also,

 popupwindowdogs.showasdropdown(buttonshowdropdown, (int)(math.round(buttonshowdropdown.getx())),-(totallinear_layouts+buttonshowdropdown.getheight())); 

totallinearlayouts = sum of heights of linear layouts till button.

this works on few devices not spinner. how can make work spinner? mean inflate size of device , list height. appreciate help. in advance.

reference:https://www.codeofaninja.com/2013/04/show-listview-as-drop-down-android.html

mainactivity.java

public class mainactivity extends activity {      string tag = "mainactivity.java";      string popupcontents[];     popupwindow popupwindowdogs;     button buttonshowdropdown;      @override     protected void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          // initialize pop window items list          // add items on array dynamically         // format dogname::dogid         list<string> dogslist = new arraylist<string>();         dogslist.add("akita inu::1");         dogslist.add("alaskan klee kai::2");         dogslist.add("papillon::3");         dogslist.add("tibetan spaniel::4");          // convert simple array         popupcontents = new string[dogslist.size()];         dogslist.toarray(popupcontents);           // initialize pop window         popupwindowdogs = popupwindowdogs();           // button on click listener          view.onclicklistener handler = new view.onclicklistener() {             public void onclick(view v) {                                                                                                                                                                                                                                                                                                                   switch (v.getid()) {                  case r.id.buttonshowdropdown:                     // show list view dropdown                     popupwindowdogs.showasdropdown(v, -5, 0);                     break;                 }             }         };          // our button         buttonshowdropdown = (button) findviewbyid(r.id.buttonshowdropdown);         buttonshowdropdown.setonclicklistener(handler);     }      public popupwindow popupwindowdogs() {          // initialize pop window type         popupwindow popupwindow = new popupwindow(this);          // drop down list list view         listview listviewdogs = new listview(this);          // set our adapter , pass our pop window contents         listviewdogs.setadapter(dogsadapter(popupcontents));          // set item click listener         listviewdogs.setonitemclicklistener(new dogsdropdownonitemclicklistener());          // other visual settings         popupwindow.setfocusable(true);         popupwindow.setwidth(250);         popupwindow.setheight(windowmanager.layoutparams.wrap_content);          // set list view pop window content         popupwindow.setcontentview(listviewdogs);          return popupwindow;     }      /*      * adapter list values set      */     private arrayadapter<string> dogsadapter(string dogsarray[]) {          arrayadapter<string> adapter = new arrayadapter<string>(this, android.r.layout.simple_list_item_1, dogsarray) {              @override             public view getview(int position, view convertview, viewgroup parent) {                  // setting id , text every items in list                 string item = getitem(position);                 string[] itemarr = item.split("::");                 string text = itemarr[0];                 string id = itemarr[1];                  // visual settings list item                 textview listitem = new textview(mainactivity.this);                  listitem.settext(text);                 listitem.settag(id);                 listitem.settextsize(22);                 listitem.setpadding(10, 10, 10, 10);                 listitem.settextcolor(color.white);                  return listitem;             }         };          return adapter;     } } 

dogsdropdownonitemclicklistener.java

public class dogsdropdownonitemclicklistener implements onitemclicklistener {      string tag = "dogsdropdownonitemclicklistener.java";      @override     public void onitemclick(adapterview<?> arg0, view v, int arg2, long arg3) {          // context , main activity access variables         context mcontext = v.getcontext();         mainactivity mainactivity = ((mainactivity) mcontext);          // add animation when list item clicked         animation fadeinanimation = animationutils.loadanimation(v.getcontext(), android.r.anim.fade_in);         fadeinanimation.setduration(10);         v.startanimation(fadeinanimation);          // dismiss pop         mainactivity.popupwindowdogs.dismiss();          // text , set button text         string selecteditemtext = ((textview) v).gettext().tostring();         mainactivity.buttonshowdropdown.settext(selecteditemtext);          // id         string selecteditemtag = ((textview) v).gettag().tostring();         toast.maketext(mcontext, "dog id is: " + selecteditemtag, toast.length_short).show();      }  }