Oi, eu estou usando braintree e tentando obter nonce usando check-out expresso. mas a questão é que, minhas telas de pagamento são capazes de abrir, mas no meu log eu não estou recebendo nada em nenhum lugar. e mais um problema ocorre após o pagamento. Eu quero redirecionar para um dos meus fragmentos, mas ele não está redirecionando. Alguém pode me ajudar com isso

Estou acompanhando a demonstração oficial da braintre

https: //developer.paypal.com/docs/accept-payments/express-checkout/ec-braintree-sdk/client-side/android/v2

 public void setupBraintreeAndStartExpressCheckout() {

        PayPal.requestOneTimePayment(mBraintreeFragment, getPayPalRequest(rus.replace("$","").replace(" ","")));

    }
    private PayPalRequest getPayPalRequest(@Nullable String amount) {
        PayPalRequest request = new PayPalRequest(amount);

        request.currencyCode("USD");
        request.displayName(preference.getUserName(this));
        request.landingPageType(PayPalRequest.LANDING_PAGE_TYPE_LOGIN);
        request.userAction(PayPalRequest.USER_ACTION_COMMIT);
       // request.intent(PayPalRequest.INTENT_SALE);


        return request;
    }

    @Override
    public void onPaymentMethodNonceCreated(PaymentMethodNonce paymentMethodNonce) {
        // Send nonce to server
         nonce = paymentMethodNonce.getNonce();

        if (paymentMethodNonce instanceof PayPalAccountNonce) {
            PayPalAccountNonce payPalAccountNonce = (PayPalAccountNonce)paymentMethodNonce;

           // payPalAccountNonce.getPayerId()
            String paymentNonce = payPalAccountNonce.getNonce();
            Intent intent = new Intent()
                    .putExtra("tests", paymentMethodNonce);

            getActivity().setResult(Activity.RESULT_OK, intent);
            getActivity().finish();
        }


    }



    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        //If the result is from paypal

            //If the result is OK i.e. user has not canceled the payment
            if (resultCode == RESULT_OK) {
                //Getting the payment confirmation


                Parcelable returnedData = data.getParcelableExtra("tests");

                if (returnedData instanceof PaymentMethodNonce) {
                    String paymentNonce = ((PaymentMethodNonce) returnedData).getNonce();
                    System.out.println("NONCE CREATED"+nonce);
                    BuyerSuccessModel bm=new BuyerSuccessModel();
                    orderid=bm.getOrderid();
                    BuyerMembershipSuceesFragment BMSSuccessFragment = new BuyerMembershipSuceesFragment();
                    Bundle bundle = new Bundle();
                    bundle.putString("OrderID", orderid);
                    bundle.putString("PaypalStatus", paymentNonce);
                    BMSSuccessFragment.setArguments(bundle);
                    addFragment(R.id.activity_home_fl_container, BuyerMembershipDetailFragment.this, BMSSuccessFragment, true, false);


                }}}