android - Google Billing V3 null pointer exception -


basically want static test of google billing v3,before doing real online test using beta version thing. when try run program,i following part of exception...

        caused by: java.lang.illegalargumentexception: connection            null @ android.app.contextimpl.bindservicecommon         (contextimpl.java:1935)         @ android.app.contextimpl.bindservice(contextimpl.java:1921)         @ android.content.contextwrapper.bindservice         (contextwrapper.java:529)         @ victory.walkto.paymenttestb.mainactivity.         oncreate(mainactivity.java:37)         @ android.app.activity.performcreate(activity.java:5451)

the program wrote following.

public class mainactivity extends activity {  iinappbillingservice mservice; serviceconnection connection; string inappid = "android.test.purchased"; //replace in-app product id  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     intent serviceintent = new intent("com.android.vending.billing.inappbillingservice.bind");     serviceintent.setpackage("com.android.vending");     bindservice(serviceintent,connection, context.bind_auto_create);     connection = new serviceconnection() {          @override         public void onservicedisconnected(componentname name) {             mservice = null;          }          @override         public void onserviceconnected(componentname name, ibinder service) {             mservice = iinappbillingservice.stub.asinterface(service);         }     };      button purchasebtn = (button) findviewbyid(r.id.purchase);     purchasebtn.setonclicklistener(new view.onclicklistener() {          @override         public void onclick(view v) {             arraylist skulist = new arraylist();             skulist.add(inappid);             bundle queryskus = new bundle();             queryskus.putstringarraylist("item_id_list", skulist);             bundle skudetails;             try {                 skudetails = mservice.getskudetails(3, getpackagename(),                         "inapp", queryskus);                  int response = skudetails.getint("response_code");                 if (response == 0) {                      arraylist<string> responselist = skudetails                             .getstringarraylist("details_list");                      (string thisresponse : responselist) {                         jsonobject object = new jsonobject(thisresponse);                         string sku = object.getstring("productid");                         string price = object.getstring("price");                         if (sku.equals(inappid)) {                             system.out.println("price " + price);                             bundle buyintentbundle = mservice                                     .getbuyintent(3, getpackagename(), sku,                                             "inapp",                                             "bgoa+v7g/yqdxvkrqq+jtfn4uqzbpiqjo4pf9rzj");                             pendingintent pendingintent = buyintentbundle                                     .getparcelable("buy_intent");                             startintentsenderforresult(                                     pendingintent.getintentsender(), 1001,                                     new intent(), integer.valueof(0),                                     integer.valueof(0), integer.valueof(0));                         }                     }                 }             } catch (remoteexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             } catch (jsonexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             } catch (intentsender.sendintentexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             }          }     }); } @override protected void onactivityresult(int requestcode, int resultcode, intent data) {     if (requestcode == 1001) {         string purchasedata = data.getstringextra("inapp_purchase_data");          if (resultcode == result_ok) {             try {                 jsonobject jo = new jsonobject(purchasedata);                 string sku = jo.getstring(inappid);                 toast.maketext(                         mainactivity.this,                         "you have bought " + sku                                 + ". excellent choice,adventurer!",                         toast.length_long).show();              } catch (jsonexception e) {                 system.out.println("failed parse purchase data.");                 e.printstacktrace();             }         }     } } @override public void ondestroy() {     super.ondestroy();     if (connection != null) {         unbindservice(connection);     }  } }

i found out google wallet can not downloaded in phone if using greek account!!! paypal stopped operation greece due banking problems!!!

you need first create service connection , bind service.

// first connection = new serviceconnection() {      @override     public void onservicedisconnected(componentname name) {         mservice = null;      }      @override     public void onserviceconnected(componentname name, ibinder service) {         mservice = iinappbillingservice.stub.asinterface(service);     } };  // bindservice(serviceintent,connection, context.bind_auto_create);

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