android - how to get access of my button in one of my viewpager pages? -

i'm new android , java.

my viewpager can slide xml layout, don't know how access item in them.

i tried using button mybutton = (button) findviewbyid (r.layout.result), set onclicklistener in mybutton, forced close every time run it.

here code:

public class main extends activity {      private viewpager myviewpager;     private viewpageradapter myviewpageradapter;     private static int num_awesome_views = 12;     button button_1;        @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);          myviewpageradapter = new viewpageradapter();         myviewpager = (viewpager) findviewbyid(r.id.myviewpager);         myviewpager.setadapter(myviewpageradapter);              button_1 = (button) myviewpager.findviewbyid(r.id.first_button);             button_1.setonclicklistener(new onclicklistener() {                 public void onclick(view v) {                     finish();                 }             });     }      private class viewpageradapter extends pageradapter {          @override         public int getcount() {                 return num_awesome_views;         }          @override         public object instantiateitem(view collection, int position) {                 layoutinflater layoutinflater = getlayoutinflater();                  view view;                 view = layoutinflater.inflate(r.layout.page1, null);                  switch (position)                 {                     case 0 : view = layoutinflater.inflate(r.layout.page1, null); break;                     case 1 : view = layoutinflater.inflate(r.layout.page2, null); break;                     case 2 : view = layoutinflater.inflate(r.layout.page3, null); break;                     case 3 : view = layoutinflater.inflate(r.layout.page4, null); break;                     case 4 : view = layoutinflater.inflate(r.layout.page5, null); break;                     case 5 : view = layoutinflater.inflate(r.layout.page6, null); break;                     case 6 : view = layoutinflater.inflate(r.layout.page7, null); break;                     case 7 : view = layoutinflater.inflate(r.layout.page8, null); break;                     case 8 : view = layoutinflater.inflate(r.layout.page9, null); break;                     case 9 : view = layoutinflater.inflate(r.layout.page10, null); break;                     case 10 : view = layoutinflater.inflate(r.layout.page11, null); break;                     case 11 : view = layoutinflater.inflate(r.layout.result, null);break;                 }                 ((viewpager) collection).addview(view,0);                 return view;         }          @override         public void destroyitem(view collection, int position, object view) {                 ((viewpager) collection).removeview((view) view);         }            @override         public boolean isviewfromobject(view view, object object) {                 return view==((view)object);         }          @override         public void finishupdate(view arg0) {}           @override         public void restorestate(parcelable arg0, classloader arg1) {}          @override         public parcelable savestate() {                 return null;         }          @override         public void startupdate(view arg0) {}      } 

it may problem, items not found try this(if view no linearlayout change it)

layoutinflater getview = (layoutinflater)getapplicationcontext().getsystemservice(context.layout_inflater_service);  linearlayout view1 =(linealayout)getview.inflate(r.layout.your_view,null); 

but button may throw exception furthermore there onclicklistener set it. if it's button define in xml:

android:onclick"buttonclick" 

then in code

public void buttonclick(view v){  //  } 

if not possible because need reference button later, stuck same problem , know how works.