android - in-app billing error : unable to buy item,error response 5 developer error -

i have in-app billing service set there 2 consumables , 1 non-consumable.

for non-consumable, checking purchase list , if item owned, want user refrain purchasing again , instead make benefit available. have 2 classes: guess.java (launcher file) , purchase.java (in-app billing setup file)

inside guess.java

intent intent = new intent(guess.this,purchase.class); intent.putextra("buy_2x", "buy_2x"); startactivity(intent); 

the buy_2x non-consumable (buying-choice 2 in code below while consumables call buying choices 0 , 1) referring to. inside purchase.java code follows

public class purchase extends activity {      iinappbillingservice mservice;     private bundle extras;     private int add=0;//add coins kitty       private int buying_choice;      private string item_sku_selection;       private static final string tag = "com.apps.guess.inappbilling";     iabhelper mhelper;      private serviceconnection mserviceconn;      @override      public void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);          string base64encodedpublickey = "<64-char> long";          intent intent = getintent();             string buy2x_recd =intent.getextras().getstring("buy_2x");           //this class contains static variables , using choices             //0,1,2...choice 2 non-consumable buy_2x         if(userdata.getbuying_choice()!=2) item_sku_selection = selectbuyingchoice(userdata.getbuying_choice());              //callservice() method referred below          if(buy2x_recd.equalsignorecase("buy_2x"))callservice();          mhelper = new iabhelper(this, base64encodedpublickey);         mhelper.startsetup(new                  iabhelper.oniabsetupfinishedlistener() {                       public void oniabsetupfinished(iabresult result)                    {                         if (!result.issuccess()) {                         toast.maketext(getapplicationcontext(), "in-app billing setup failed: = ", toast.length_long).show();                         log.d(tag, "in-app billing setup failed: ");                       } else {                                          log.d(tag, "in-app billing set ok");                             mhelper.launchpurchaseflow(purchase.this, item_sku_selection, 10001,mpurchasefinishedlistener, "");                             mhelper.enabledebuglogging(true, tag);                   }                    }                 });        }//oncreate() ends      public void callservice(){         mserviceconn = new serviceconnection()          {         @override             public void onserviceconnected(componentname name,                     ibinder service) {                   mservice = iinappbillingservice.stub.asinterface(service);                     log.d("test", "mservice ready go!");                     checkowneditems();           }              @override             public void onservicedisconnected(componentname name) {                  mservice = null;             }         };          bindservice(new intent("com.android.vending.billing.inappbillingservice.bind"), mserviceconn, context.bind_auto_create);         }       private void checkowneditems()         {      try {         bundle owneditems = mservice.getpurchases(3, getpackagename(), "inapp", null);          int response = owneditems.getint("response_code");         if (response == 0) {            arraylist<string> ownedskus =               owneditems.getstringarraylist("inapp_purchase_item_list");            arraylist<string>  purchasedatalist =               owneditems.getstringarraylist("inapp_purchase_data_list");            arraylist<string>  signaturelist =               owneditems.getstringarraylist("inapp_data_signature");            string continuationtoken =                owneditems.getstring("inapp_continuation_token");             (int = 0; < purchasedatalist.size(); ++i) {               string purchasedata = purchasedatalist.get(i);               string signature = signaturelist.get(i);               string sku = ownedskus.get(i);                if(sku.equalsignorecase("buy_2x"))               {                  alertdialog.builder builder = new alertdialog.builder(purchase.this);                 builder.settitle("purchased already");                 builder.setmessage("you have purchased 2x option. want enable it?");                  builder.setpositivebutton("yes!", new dialoginterface.onclicklistener() {                      public void onclick(dialoginterface dialog1, int which) {                         toast.maketext(getapplicationcontext(), "you have decided double gains!.please wait...", toast.length_long).show();                          int double_2x_value=2*getresources().getintarray(r.array.start_parameters)[2];                         userdata.writedata(""+double_2x_value, purchase.this, userdata.get2xfile());                         userdata.setwinningvalue(""+double_2x_value);                          userdata.writedata("true", purchase.this, userdata.getdoublexpurchasefile());                         userdata.setbuy2x(true);                          userdata.setbuying_choice(0);                         dialog1.dismiss();                           intent intent = new intent(purchase.this, com.glambleapps.guesstheword.guess.class);                          startactivity(intent);                          }});                  builder.setnegativebutton("no", new dialoginterface.onclicklistener() {                     public void onclick(dialoginterface dialog1, int which) {                         dialog1.dismiss();                         }});                 alertdialog alert = builder.create();                 alert.show();                   break;               }                 // purchase information               // e.g. display updated list of products owned user            }              // if continuationtoken != null, call getpurchases again             // , pass in token retrieve more items         }          else {             toast.maketext(purchase.this, "no 2x purchase available on device",toast.length_long).show();             item_sku_selection=selectbuyingchoice(2);         }        } catch (remoteexception e) {         // todo auto-generated catch block         e.printstacktrace();     } }      private string selectbuyingchoice(int buying_choice2) {         string item_sku_selection=null;         switch(buying_choice2){         case 0:             item_sku_selection = "buy_200_coins";             add = 200;             toast.maketext(getapplicationcontext(), "you have decided purchase 200 coins.please wait...", toast.length_long).show();             break;          case 1:             item_sku_selection = "buy_1200_coins";             add = 1200;             toast.maketext(getapplicationcontext(), "you have decided purchase 1200 coins.please wait...", toast.length_long).show();             break;          case 2:             item_sku_selection = "buy_2x";             add = 0;             toast.maketext(getapplicationcontext(), "you have decided double winnings!.please wait...", toast.length_long).show();             break;          default:             toast.maketext(getapplicationcontext(), "no buying choice", toast.length_short).show();             break;          }          //toast.maketext(getapplicationcontext(), "item_sku_selection = "+item_sku_selection, toast.length_short).show();         return item_sku_selection;      }      iabhelper.onconsumefinishedlistener mconsumefinishedlistener =               new iabhelper.onconsumefinishedlistener() {                public void onconsumefinished(purchase purchase,                       iabresult result) {               if (result.issuccess()) {                                   int total =add+integer.parseint(userdata.getcoins_remaining());                   if(!(item_sku_selection.equalsignorecase("buy_2x")))                  toast.maketext(getapplicationcontext(), "successful purchase done of "+add+" guess-coins!", toast.length_long).show();                     if(item_sku_selection.equalsignorecase("buy_2x")){                       int double_2x_value=2*getresources().getintarray(r.array.start_parameters)[2];                      toast.maketext(getapplicationcontext(), "2x - double winnings! purchase successful.", toast.length_long).show();                       userdata.setwinningvalue(""+double_2x_value);                    }                   add=0;                  intent intent = new intent(purchase.this, guess.class);                  startactivity(intent);               } else {                  toast.maketext(getapplicationcontext(), "no purchase done", toast.length_long).show();                  intent intent = new intent(purchase.this, guess.class);                  startactivity(intent);               }           }         };      @override     public void ondestroy() {         super.ondestroy();         if (mhelper != null) mhelper.dispose();         mhelper = null;          if(mserviceconn != null)         {             unbindservice(mserviceconn);             mserviceconn=null;         }      }      public void consumeitem() {         mhelper.queryinventoryasync(mreceivedinventorylistener);     }       iabhelper.queryinventoryfinishedlistener mreceivedinventorylistener         = new iabhelper.queryinventoryfinishedlistener() {            public void onqueryinventoryfinished(iabresult result,               inventory inventory) {                 if (result.isfailure()) {                    intent intent = new intent(purchase.this, guess.class);                   startactivity(intent);                } else {                      mhelper.consumeasync(inventory.getpurchase(item_sku_selection), mconsumefinishedlistener);               }         }     };      @override     protected void onactivityresult(int requestcode, int resultcode, intent data)      {           if (!mhelper.handleactivityresult(requestcode, resultcode, data)) {                  super.onactivityresult(requestcode, resultcode, data);           }            if (resultcode == result_canceled) {               toast.maketext(purchaseactivity.this,"sorry, have canceled coins purchase.",toast.length_short).show();           }       }      iabhelper.oniabpurchasefinishedlistener mpurchasefinishedlistener      = new iabhelper.oniabpurchasefinishedlistener() {     public void oniabpurchasefinished(iabresult result,                      purchase purchase)      {        if (result.isfailure()) {               intent intent = new intent(purchase.this, guess.class);              startactivity(intent);            return;      }            else if (purchase.getsku().equals(item_sku_selection)) {consumeitem();     }     } };      }//class ends  

i getting following warning :

implicit intents startservice not safe: intent { act=com.android.vending.billing.inappbillingservice.bind } android.content.contextwrapper.bindservice:517  purchase.callservice:107  purchase.oncreate:68  

the error follows:

iabhelper(25782): in-app billing error: unable buy item, error response: 5:developer error 

the userdata.java stores values , writes datain text files. have no issues.

what issue? please help. thank you

are trying buy item logged on device googleplay developer account?

google doesn't allow it. should use different one.

in developer console, go account settings , add accounts test. then, logged 1 of them, try purchase item. should able achieve it.

edit:

checking documentation, i've found must test valid signed apk http://developer.android.com/google/play/billing/billing_reference.html