android - In App Billing crashed in API 23 -


i upgrading project api 23. app crashed on in-app billing api 23 works on api 22. when purchasehandler calls purchaseitem method, app crash on launchpurchaseflow method. 

--------- beginning of crash 10-26 13:24:12.048 3031-3031/com.example.--- e/androidruntime: fatal exception: main     process: com.example.---, pid: 3031     java.lang.illegalstateexception: iab helper not set up. can't perform operation: launchpurchaseflow         @ com.android.vending.billing.util.iabhelper.checksetupdone(iabhelper.java:790)         @ com.android.vending.billing.util.iabhelper.launchpurchaseflow(iabhelper.java:380)         @ com.myqalam.inapppurchase.inapppurchasehandler.purchaseitem(inapppurchasehandler.java:31)         @ com.myqalam.shalatindonesian.indexactivity.onmenuitemselected(indexactivity.java:95)         @ com.android.internal.policy.phonewindow.onmenuitemselected(phonewindow.java:1151)         @ com.android.internal.view.menu.menubuilder.dispatchmenuitemselected(menubuilder.java:761)         @ com.android.internal.view.menu.menuitemimpl.invoke(menuitemimpl.java:152)         @ com.android.internal.view.menu.menubuilder.performitemaction(menubuilder.java:904)         @ com.android.internal.view.menu.menubuilder.performitemaction(menubuilder.java:894)         @ com.android.internal.view.menu.iconmenuview.invokeitem(iconmenuview.java:468)         @ com.android.internal.view.menu.iconmenuitemview.performclick(iconmenuitemview.java:129)         @ android.view.view$performclick.run(view.java:21147)         @ android.os.handler.handlecallback(handler.java:739)         @ android.os.handler.dispatchmessage(handler.java:95)         @ android.os.looper.loop(looper.java:148)         @ android.app.activitythread.main(activitythread.java:5417)         @ java.lang.reflect.method.invoke(native method)         @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)         @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616)

here code:

private context mcontext; private iabhelper billinhelper; public inapppurchasehandler(context context) {         this.mcontext = context;         billinhelper = new iabhelper(context, apppropertykey.base_64_key);         toast.maketext(context.getapplicationcontext(),"iabhepler",toast.length_short).show();      }  public void setonsetupcompletelistener(iabhelper.oniabsetupfinishedlistener listener){         billinhelper.startsetup(listener);     }   public void oniteminventoryasyn(iabhelper.queryinventoryfinishedlistener listener){          billinhelper.queryinventoryasync(listener);     } public void purchaseitem(string sku,iabhelper.oniabpurchasefinishedlistener listener){         //if(billinhelper.issetupdone() && !billinhelper.isasyncinprogress())//change         if (billinhelper!=null)         billinhelper.launchpurchaseflow((activity) mcontext, sku, iabhelper.item_type_subs, 123, listener, "");     }   public void onbillingactivityresult(int requestcode,int resultcode,intent data){         billinhelper.handleactivityresult(requestcode, resultcode, data);     } public void disposebillinghelper() {             if (billinhelper != null) {                 billinhelper.dispose();             }             billinhelper = null;         }

here code call function:

purchasehandler.purchaseitem(removeads.sku,                     new oniabpurchasefinishedlistener() {                         @override                         public void oniabpurchasefinished(iabresult result,                                                           purchase info) {                             if (result.issuccess()) {                                 datamanager.setremoveads(true);                                 toast.maketext(indexactivity.this,                                         "ads removed.",                                         toast.length_long).show();                                 refrshactivity();                             }                         }                     });

i testing in-app billing on emulator cause crash. in-app billing wont test on emulator can tested :

  1. your real android device sign apk.
  2. another 1 android developer account upload sign apk test it.

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