如何在android中调用Vault Pay Pal Api

implementation 'com.paypal.sdk:paypal-android-sdk:2.16.0'

PayPalConfiguration config = new PayPalConfiguration()
        .environment(PayPalConfiguration.ENVIRONMENT_SANDBOX) // 设置环境为沙箱环境，用于测试
        .clientId("YOUR_CLIENT_ID"); // 设置您的PayPal客户端ID

PayPalService.init(this, config);

PayPalPayment payment = new PayPalPayment(new BigDecimal("10.00"), "USD", "Payment Description",
        PayPalPayment.PAYMENT_INTENT_SALE);

Intent intent = new Intent(this, PaymentActivity.class);
intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
intent.putExtra(PaymentActivity.EXTRA_PAYMENT, payment);
startActivityForResult(intent, REQUEST_CODE_PAYPAL_PAYMENT);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CODE_PAYPAL_PAYMENT) {
        if (resultCode == Activity.RESULT_OK) {
            // 支付成功
            PaymentConfirmation confirmation = data.getParcelableExtra(PaymentActivity.EXTRA_RESULT_CONFIRMATION);
            if (confirmation != null) {
                String paymentId = confirmation.getProofOfPayment().getPaymentId();
                // 在这里处理支付成功后的逻辑
            }
        } else if (resultCode == Activity.RESULT_CANCELED) {
            // 用户取消支付
        } else if (resultCode == PaymentActivity.RESULT_EXTRAS_INVALID) {
            // 无效的支付或配置
        }
    }
}