Paypal的沙盒信用卡无效

我已经下载了用于android的Paypal SDK，并将我的代码与示例项目进行了比较，除了我在Paypal之后向活动发送的附加意图之外，它们是相同的。问题是我犯了一个奇怪的错误。一旦我点击按钮，添加cc详细信息并按下charge…贝宝说我输入的信用卡无效。这只发生在我尝试发送我自己额外的东西时。当我突然取消我的额外意图时，同样的沙盒信用卡也顺利通过了。这是因为paypal只接受某些变量，可能是浮动的，不喜欢字符串吗？或者，也许我的代码中有一个简单的缺陷

public void onBuyPressed(View pressed) {

 TextView inputx =(TextView)findViewById(R.id.super);
 String ix =inputx.getText().toString();
 TextView inputP =(TextView)findViewById(R.id.input);
 String ip =inputP.getText().toString();
 try{
    double valuey =Double.parseDouble(ip); 
    if(valuey>0)
    {
 PayPalPayment payment = new PayPalPayment(new BigDecimal(valuey), "USD", ix );
  Intent intent = new Intent(this, PaymentActivity.class);
 intent.putExtra(PaymentActivity.EXTRA_PAYPAL_ENVIRONMENT, PaymentActivity.ENVIRONMENT_SANDBOX);
 // it's important to repeat the clientId here so that the SDK has it if Android restarts your
 // app midway through the payment UI flow.
 intent.putExtra(PaymentActivity.EXTRA_CLIENT_ID, "AZetc,etc,etc..the Id is NOT the issue");

 // Provide a payerId that uniquely identifies a user within the scope of your system,
 // such as an email address or user ID.
 intent.putExtra(PaymentActivity.EXTRA_PAYER_ID, "");

 intent.putExtra(PaymentActivity.EXTRA_RECEIVER_EMAIL,"myprivateemail@yahoo.com");
 intent.putExtra(PaymentActivity.EXTRA_PAYMENT, payment);
 startActivityForResult(intent, 0);
 }
else{
Toast.makeText(getApplicationContext(), "You haven't entered anything.",
        Toast.LENGTH_LONG).show();
}} catch (NumberFormatException e) {
}}  

 @Override
 protected void onActivityResult (int requestCode, int resultCode, Intent data) {
 if (resultCode == Activity.RESULT_OK) {
     PaymentConfirmation confirm = data.getParcelableExtra(PaymentActivity.EXTRA_RESULT_CONFIRMATION);
     if (confirm != null) {

         final TextView x =(TextView)findViewById(R.id.custname);
         String onex = x.getText().toString();

         final TextView nov  =(TextView)findViewById(R.id.secret);
         String dec = nov.getText().toString();

         final TextView feb  =(TextView)findViewById(R.id.secretname);
         String jan = feb.getText().toString();

         final TextView xx =(TextView)findViewById(R.id.inputPrice);
         String twox = xx.getText().toString();

         final TextView xxx =(TextView)findViewById(R.id.help);
         String threex = xxx.getText().toString();

         Intent intent= new Intent(SuperActivity2.this,SuperCheckActivity.class)

        .putExtra("secret",dec)
        .putExtra("secretname",jan)
        .putExtra("date",threex)
        .putExtra("inputPrice",twox)
        .putExtra("customername",onex)
        .putStringArrayListExtra("list", listItems);
         startActivity(intent);
         try {
             Log.i("paymentExample", confirm.toJSONObject().toString(4));

             // TODO: send 'confirm' to your server for verification.
             // see https://developer.paypal.com/webapps/developer/docs/integration/mobile/verify-mobile-payment/
             // for more details.

         } catch (JSONException e) {
             Log.e("paymentExample", "an extremely unlikely failure occurred: ", e);
         }
     }
 }
 else if (resultCode == Activity.RESULT_CANCELED) {
     Log.i("paymentExample", "The user canceled.");
 }
 else if (resultCode == PaymentActivity.RESULT_PAYMENT_INVALID) {
     Log.i("paymentExample", "An invalid payment was submitted. Please see the docs.");


 }

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我也有同样的问题。当我尝试用贝宝支付时，一切正常，但当我尝试用信用卡支付时，我得到了错误，信用卡的数据不正确。 然后我调试我的应用程序，看到我设置为PayPalPayment的金额有很大的洞察力。所以我把我的感知设置为小数点后2位，用信用卡支付就行了

以下是我如何设置金额的示例：

ttlPrice = new BigDecimal(totalPrice, MathContext.DECIMAL32).setScale(2);
payment = new PayPalPayment(ttlPrice, "EUR", "description");

ttlPrice=新的BigDecimal（totalPrice，MathContext.DECIMAL32）。设置刻度（2）；

---

付款=新付款（TTL价格、“欧元”、“说明”）

请修正你的答案，给出一些解释，并将其格式化。