Accept a PayPal payment

plugins {
    id("com.android.application")
}

android { ... }

dependencies {
  // ...

  // Stripe Android SDK
  implementation("com.stripe:stripe-android:21.18.0")
  // Include the financial connections SDK to support US bank account as a payment method
  implementation("com.stripe:financial-connections:21.18.0")
}

import com.stripe.android.PaymentConfiguration

class MyApp : Application() {
    override fun onCreate() {
        super.onCreate()
        PaymentConfiguration.init(
            applicationContext,
            
"pk_test_TYooMQauvdEDq54NiTphI7jx"
        )
    }
}

curl https://api.stripe.com/v1/payment_intents \
  -u "
sk_test_BQokikJOvBiI2HlWgH4olfQ2
:" \
  -d amount=1099 \
  -d currency=eur \
  -d "payment_method_types[]"=paypal

curl https://api.stripe.com/v1/payment_intents \
  -u "
sk_test_BQokikJOvBiI2HlWgH4olfQ2
:" \
  -d amount=1099 \
  -d currency=eur \
  -d description="A sample description" \
  -d "payment_method_types[]"=paypal

curl https://api.stripe.com/v1/payment_intents \
  -u "
sk_test_BQokikJOvBiI2HlWgH4olfQ2
:" \
  -d amount=1099 \
  -d currency=eur \
  -d "payment_method_types[]"=paypal \
  -d "payment_method_options[paypal][preferred_locale]"=fr-BE

class CheckoutActivity : AppCompatActivity() {

  private lateinit var paymentIntentClientSecret: String

  override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      // ...
      startCheckout()
  }

  private fun startCheckout() {
      // Request a PaymentIntent from your server and store its client secret in paymentIntentClientSecret
      // Click View full sample to see a complete implementation
  }
}

class CheckoutActivity : AppCompatActivity() {
    // ...
    private lateinit var paymentIntentClientSecret: String
    private val paymentLauncher: PaymentLauncher by lazy {
        PaymentLauncher.Companion.create(
            this,
            PaymentConfiguration.getInstance(applicationContext).publishableKey,
            PaymentConfiguration.getInstance(applicationContext).stripeAccountId,
            ::onPaymentResult
        )
    }

    private fun startCheckout() {
        // ...

        val confirmParams = ConfirmPaymentIntentParams
            .createWithPaymentMethodCreateParams(
                paymentMethodCreateParams = PaymentMethodCreateParams.createPayPal(),
                clientSecret = paymentIntentClientSecret
            )
        paymentLauncher.confirm(confirmParams)
    }

    private fun onPaymentResult(paymentResult: PaymentResult) {
        val message = when (paymentResult) {
            is PaymentResult.Completed -> {
                "Completed!"
            }
            is PaymentResult.Canceled -> {
                "Canceled!"
            }
            is PaymentResult.Failed -> {
                // This string comes from the PaymentIntent's error message.
                // See here: https://stripe.com/docs/api/payment_intents/object#payment_intent_object-last_payment_error-message
                "Failed: " + paymentResult.throwable.message
            }
        }
    }
}