如何将PayPal embedded simple payments集成到安卓应用中

dependencies {
    implementation 'com.paypal.sdk:paypal-android-sdk:2.16.0'
}

PayPalConfiguration config = new PayPalConfiguration()
        .environment(PayPalConfiguration.ENVIRONMENT_SANDBOX)
        .clientId("YOUR_CLIENT_ID");

PayPalPayment payment = new PayPalPayment(new BigDecimal("10.00"), "USD", "Item Name",
        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);

<uses-permission android:name="android.permission.INTERNET" />

<application>
    <service
        android:name="com.paypal.android.sdk.payments.PayPalService"
        android:exported="false" />
</application>

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Intent intent = new Intent(this, PayPalService.class);
    intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
    startService(intent);
}

@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) {
            PaymentConfirmation confirmation = data.getParcelableExtra(PaymentActivity.EXTRA_RESULT_CONFIRMATION);
            if (confirmation != null) {
                String paymentId = confirmation.getProofOfPayment().getPaymentId();
                // 处理支付成功逻辑
            }
        } else if (resultCode == Activity.RESULT_CANCELED) {
            // 处理支付取消逻辑
        } else if (resultCode == PaymentActivity.RESULT_EXTRAS_INVALID) {
            // 处理支付无效逻辑
        }
    }
}