مشکل با سیستم درون پرداختی بازار

سلام دوستان من با این کد درون پرداختی بازارو راه انداختم همه چیش خوب کار میکنه مشکلی که هستش اینه وقتی ی خرید میزنی دوباره رو همون بزنی بدون کم شدن هزینه خرید صورت میگیره پول از طرف کم نمیشه ولی خرید انجام میشه

من میخواهم محصولی که ی بار خرید شد دوباره هم خرید بشه

ی نگاه به این کد بندازید اگه ممکنه بگید مشکل از چیه و چکار کنم!

public class BalanceActivity extends ActivityBase {


    private static final String TAG = "gapgram.inappbilling";  
    private static final String TOKEN = "gapgram.inappbilling";

    static final String ITEM_SKU_1 = "networkpro.ifsoft.ru.iap1";  

    Button mBuy1Butto;
    TextView mLabelCredits;

    private Boolean loading = false;

    IabHelper mHelper;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_balance);

        String base64EncodedPublicKey = BILLING_KEY;

        mHelper = new IabHelper(BalanceActivity.this, base64EncodedPublicKey);

        mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {

            public void onIabSetupFinished(IabResult result) {

                if (!result.isSuccess()) {
                    // Oh noes, there was a problem.
                    complain("Problem setting up in-app billing: " + result);
                    return;

                }

                // Have we been disposed of in the meantime? If so, quit.
                if (mHelper == null) return;

                // IAB is fully set up. Now, let's get an inventory of stuff we own.
                Log.d(TAG, "Setup successful. Querying inventory.");
            }
        });


        if (savedInstanceState != null) {

            loading = savedInstanceState.getBoolean("loading");

        } else {

            loading = false;
        }


        if (loading) {

            showpDialog();
        }

        mLabelCredits = (TextView) findViewById(R.id.labelCredits);

        mBuy1Button = (Button) findViewById(R.id.iap1_bazar_btn);
       

        

        mBuy1Button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                mHelper.launchPurchaseFlow(BalanceActivity.this, ITEM_SKU_1, 10001, mPurchaseFinishedListener, TOKEN);
            }
        });

      

        update();
    }

        return true;
    }

    IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {

        public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
            Log.d(TAG, "Purchase finished: " + result + ", purchase: " + purchase);

            // if we were disposed of in the meantime, quit.
            if (mHelper == null) return;

            if (result.isFailure()) {

                // Handle error
                complain("Error purchasing: " + result);
               // setWaitScreen(false);
                return;

            }
            if (!verifyDeveloperPayload(purchase)) {
                complain("Error purchasing. Authenticity verification failed.");
                //setWaitScreen(false);
                return;
            }
            Log.d(TAG, "Purchase successful.");
            if (purchase.getSku().equals(ITEM_SKU_1)) {

                consumeItem_1();

                App.getInstance().setBalance(App.getInstance().getBalance() + 40);
                payment(40);

            } 
    };

    public void consumeItem_1() {

        mHelper.queryInventoryAsync(mReceivedInventoryListener_1);

    }

    IabHelper.QueryInventoryFinishedListener mReceivedInventoryListener_1 = new IabHelper.QueryInventoryFinishedListener() {

        public void onQueryInventoryFinished(IabResult result, Inventory inventory) {

            if (result.isFailure()) {

                // Handle failure

            } else {

                mHelper.consumeAsync(inventory.getPurchase(ITEM_SKU_1), mConsumeFinishedListener);
            }
        }
    };
  

    IabHelper.OnConsumeFinishedListener mConsumeFinishedListener = new IabHelper.OnConsumeFinishedListener() {

        public void onConsumeFinished(Purchase purchase, IabResult result) {
            Log.d(TAG, "Consumption finished. Purchase: " + purchase + ", result: " + result);

            // if we were disposed of in the meantime, quit.
            if (mHelper == null) return;
            
            if (result.isSuccess()) {


                Log.e("Consume", "Consume Finish");

            } else {

                // handle error

                Log.e("Consume", "Consume Finish Error");
            }
        }
    };

    public void payment(final int cost) {

        loading = true;

        showpDialog();

        CustomRequest jsonReq = new CustomRequest(Request.Method.POST, METHOD_BALANCE_MODIFY, null,
          new Response.Listener<JSONObject>() {
              @Override
              public void onResponse(JSONObject response) {

                  try {

                      if (!response.getBoolean("error")) {

                          if (response.has("balance")) {

                              App.getInstance().setBalance(response.getInt("balance"));
                          }

                          success();
                      }

                  } catch (JSONException e) {

                      e.printStackTrace();

                  } finally {

                      loading = false;

                      hidepDialog();

                      update();
                  }
              }
          }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {

                loading = false;

                hidepDialog();
            }
        }) {

            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();
                params.put("clientId", CLIENT_ID);
                params.put("accountId", Long.toString(App.getInstance().getId()));
                params.put("accessToken", App.getInstance().getAccessToken());
                params.put("funds", Integer.toString(cost));

                return params;
            }
        };

        App.getInstance().addToRequestQueue(jsonReq);
    }

 


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (requestCode == REQUEST_CODE) {

            if (data == null) {

                return;
            }

        } else {

            if (!mHelper.handleActivityResult(requestCode, resultCode, data)) {

                super.onActivityResult(requestCode, resultCode, data);
            }
        }
    }


    public void update() {

        mLabelCredits.setText(getString(R.string.label_credits) + " (" + Integer.toString(App.getInstance().getBalance()) + ")");
    }

    public void success() {

        Toast.makeText(BalanceActivity.this, getString(R.string.msg_success_purchase), Toast.LENGTH_SHORT).show();

    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {

        super.onSaveInstanceState(outState);

        outState.putBoolean("loading", loading);
    }



    @Override
    protected void onDestroy() {

        super.onDestroy();

        hidepDialog();

        if (mHelper != null) mHelper.dispose();
        mHelper = null;
    }

    @Override protected void onResume() {

        super.onResume();

        update();
    }



    void complain(String message) {
        Log.e(TAG, "**** TrivialDrive Error: " + message);
        alert("Error: " + message);
    }

    void alert(String message) {
        AlertDialog.Builder bld = new AlertDialog.Builder(this);
        bld.setMessage(message);
        bld.setNeutralButton("OK", null);
        Log.d(TAG, "Showing alert dialog: " + message);
        bld.create().show();
    }
}