PaymentRequest payment = ZarinPal.getPaymentRequest();


            payment.setMerchantID("71c705f8-bd37-11e6-aa0c-000c295eb8fc");
            payment.setAmount(100);
            payment.setDescription("In App Purchase Test SDK");
            payment.setCallbackURL("app://app");
            payment.setMobile("09355106005");
            payment.setEmail("imannamix@gmail.com");


            ZarinPal.getPurchase(getApplicationContext()).startPayment(payment, new OnCallbackRequestPaymentListener() {
                @Override
                public void onCallbackResultPaymentRequest(int status, String authority, Uri paymentGatewayUri, Intent intent) {

                    startActivity(intent);
                }
            });