android - Custom onClick attribute is not working -

i created compound view consisting of 1 textview , 1 "buy" button.

for compound view, made custom attribute called onbuyclick. supposed serve same purpose view's onclick attribute, have listener not on whole view on button. so, first thing did copy view class onclick attribute does. , worked! (with minor adaptations).

but add btnbuy.setonclicklistener(new onclicklistener() {, becomes unable find method want , throws illegalstateexception (the second one, nosuchmethodexception being caught).

here piece executed once onbuyclick attribute:

if (context.isrestricted()) {     throw new illegalstateexception("the android:onclick attribute cannot "             + "be used within restricted context"); }  final string handlername = a.getstring(attr); if (handlername != null) {     btnbuy.setonclicklistener(new onclicklistener() { //as "btnbuy." added, crashes once button pressed.         private method mhandler;          public void onclick(view v) {             if (mhandler == null) {                 try {                     mhandler = getcontext().getclass().getmethod(handlername,                             view.class);                 } catch (nosuchmethodexception e) {                     int id = getid();                     string idtext = id == no_id ? "" : " id '"                             + getcontext().getresources().getresourceentryname(                             id) + "'";                     throw new illegalstateexception("could not find method " +                             handlername + "(view) in activity "                             + getcontext().getclass() + " onclick handler"                             + " on view " + this.getclass() + idtext, e);                 }             }              try {                 mhandler.invoke(getcontext(), this);             } catch (illegalaccessexception e) {                 throw new illegalstateexception("could not execute non "                         + "public method of activity", e);             } catch (invocationtargetexception e) {                 throw new illegalstateexception("could not execute "                         + "method of activity", e);             }         }     }); } 

and here variables defined outside piece: btnbuy, "buy" button in compound view, , a typedarray containing attributes.

can please me?