android - Why fragment not working -


i want change text in textview in fragment , can in instantiateitem , after instantiateitem , textview null , can not call

mypageradapter.textview.settext();

private class mypageradapter extends pageradapter {           textview textview;          public int getcount() {             return 5;         }          public object instantiateitem(view collection, int position) {              layoutinflater inflater = (layoutinflater) collection.getcontext()                     .getsystemservice(context.layout_inflater_service);              int resid = 0;             switch (position) {             case 0:                 resid = r.layout.farleft;                  view view = inflater.inflate(resid, null);                 ((viewpager) collection).addview(view, 0);                  textview = (textview)view.findviewbyid(r.id.textvvvv);                  return view;              case 1:                 resid = r.layout.left;                 break;             case 2:                 resid = r.layout.middle;                 break;             case 3:                 resid = r.layout.right;                 break;             case 4:                 resid = r.layout.farright;                 break;             }           }          @override         public void destroyitem(view arg0, int arg1, object arg2) {             ((viewpager) arg0).removeview((view) arg2);          }          @override         public boolean isviewfromobject(view arg0, object arg1) {             return arg0 == ((view) arg1);          }          @override         public parcelable savestate() {             return null;         } }

but , starnge here when change text in instantiateitem 

textview.settext("eee");

it works , can not change text outside mypageadapter, why ?

mypageradapter not static , access method used static classes. try instantiating pageradapter , use reference call getadapter() method , try locate view using findviewbyid(....)

edit:

when declare pageradapter in activity, try reference of adapter it, below

pageradapter viewer = (pageradapter) findviewbyid(r.id.pageradapter); -->

viewer.getadapter().findviewbyid(...)

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