android - Adding multiple functions to a ViewPager -

i new android development , trying create sliding carousel buttons link off other activities, have far...

main.java

public class mainactivity extends activity {  @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     //remove title bar         this.requestwindowfeature(window.feature_no_title);     setcontentview(r.layout.activity_main);       //sliding carousel controls     mypageradapter adapter = new mypageradapter();     viewpager mypager = (viewpager) findviewbyid(r.id.myfivepanelpager);     mypager.setadapter(adapter);     mypager.setcurrentitem(1);    }     //sliding carousel controls class mypageradapter extends pageradapter {     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.carousel_1;             break;         case 1:             resid = r.layout.carousel_2;             break;         case 2:             resid = r.layout.carousel_3;             button mybutton = (button) findviewbyid(r.id.paymybill);             mybutton.setonclicklistener(new view.onclicklistener() {                public void onclick(view view) {                    intent intent = new intent();                    setresult(result_ok, intent);                    finish();                }              });             break;              case 3:             resid = r.layout.carousel_4;             break;         case 4:             resid = r.layout.carousel_5;             break;         }          view view = inflater.inflate(resid, null);         ((viewpager) collection).addview(view, 0);         return view;     }      @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;     } 

i trying button working on case 2 @ moment (but case's have 2 4 buttons).

when load onto emulator

                button mybutton = (button) findviewbyid(r.id.paymybill);             mybutton.setonclicklistener(new view.onclicklistener() {                public void onclick(view view) {                    intent intent = new intent();                    setresult(result_ok, intent);                    finish();                }              });             break; 

commented out works perfectly, when include it crashes on load.

i think problem not correctly pointing button @ pager view , app crashing because main_activity doesn't have of buttons or layouts referencing.

i have spent last 2 days digging through similar problems not sure doing wrong, example, this case

v = inflater.inflate(r.layout.dashboard_media, null); 

seams same problem using different implimentation of adapter , not sure can replace , can't (i have tried , nothing seams work), new , sure simple missing!

can help?

ideally, replacing following line

button mybutton = (button) findviewbyid(r.id.paymybill); 

with

button mybutton = (button) view.findviewbyid(r.id.paymybill); 

would have solved issue.

but in case, carousel_3.xml button paymybill how in paymybill button add following

android:onclick="paymybill" 

and add function in java handle want do

public void paymybill(view view){   intent intent = new intent();   setresult(result_ok, intent);   finish(); }