如何在片段中调用OnpaymentMethodNonce方法？

Question

嗨，我正在使用braintree，并尝试通过快速结帐来获得现时数据。但是问题是，我的付款屏幕可以打开，但是在我的日志中，我什么地方都看不到现时的现象。还有一个问题是付款后，我想重定向到我的片段之一，但它没有重定向。有人可以帮我吗？

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

https://github.com/braintree/braintree_android/issues/199

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);
                    bModel bm=new bModel ();
                    orderid=bm.getOrderid();
                    MyFrags myfrag = new MyFrags();
                    Bundle bundle = new Bundle();
                    bundle.putString("OrderID", orderid);
                    bundle.putString("PaypalStatus", paymentNonce);
                    myfrag.setArguments(bundle);
                    addFragment(R.id.activity_home_fl_container, BuyerMembershipDetailFragment.this, myfrag, true, false);


                }}}