Accept a payment

First, you need a Stripe account. Register now.

Server-side

This integration requires endpoints on your server that talk to the Stripe API. Use the official libraries for access to the Stripe API from your server:

# For detailed setup, see our quickstarts at https://stripe.com/docs/development/quickstart
bundle add stripe

Client-side

The Stripe Android SDK is open source and fully documented.

To install the SDK, add stripe-android to the dependencies block of your app/build.gradle file:

apply plugin: 'com.android.application'

android { ... }

dependencies {
  // ...

  // Stripe Android SDK
  implementation 'com.stripe:stripe-android:20.21.1'
}

View your payment methods settings and enable the payment methods you want to support. You need at least one payment method enabled to create a PaymentIntent.

By default, Stripe enables cards and other prevalent payment methods that can help you reach more customers, but we recommend turning on additional payment methods that are relevant for your business and customers. See Payment method integration options for product and payment method support, and our pricing page for fees.

This integration uses three Stripe API objects:

1. A PaymentIntent. Stripe uses this to represent your intent to collect payment from a customer, tracking your charge attempts and payment state changes throughout the process.

2. A Customer (optional). To set up a payment method for future payments, it must be attached to a Customer. Create a Customer object when your customer creates an account with your business. If your customer is making a payment as a guest, you can create a Customer object before payment and associate it with your own internal representation of the customer’s account later.

3. A Customer Ephemeral Key (optional). Information on the Customer object is sensitive, and can’t be retrieved directly from an app. An Ephemeral Key grants the SDK temporary access to the Customer.

For security reasons, your app can’t create these objects. Instead, add an endpoint on your server that:

1. Retrieves the Customer, or creates a new one.
2. Creates an Ephemeral Key for the Customer.
3. Creates a PaymentIntent, with the amount, currency, customer, and automatic_payment_methods enabled.
4. Returns the Payment Intent’s client secret, the Ephemeral Key’s secret, the Customer’s id, and your publishable key to your app.

The payment methods shown to customers during the checkout process are also included on the PaymentIntent. You can let Stripe pull payment methods from your Dashboard settings or you can list them manually. Regardless of the option you choose, know that the currency passed in the PaymentIntent filters the payment methods shown to the customer. For example, if you pass eur on the PaymentIntent and have OXXO enabled in the Dashboard, OXXO won’t be shown to the customer because OXXO doesn’t support eur payments.

Unless your integration requires a code-based option for offering payment methods, Stripe recommends the automated option. This is because Stripe evaluates the currency, payment method restrictions, and other parameters to determine the list of supported payment methods. Payment methods that increase conversion and that are most relevant to the currency and customer’s location are prioritized.

# Create a Customer (skip this and get the existing Customer ID if this is a returning customer)
curl https://api.stripe.com/v1/customers \
  -u 
sk_test_4eC39HqLyjWDarjtT1zdp7dc
: \
  -X "POST"

# Create an Ephemeral Key for the Customer
curl https://api.stripe.com/v1/ephemeral_keys \
  -u 
sk_test_4eC39HqLyjWDarjtT1zdp7dc
: \
  -H "Stripe-Version: 2022-11-15" \
  -X "POST" \
  -d "customer"="{{CUSTOMER_ID}}" \

# Create a PaymentIntent
curl https://api.stripe.com/v1/payment_intents \
  -u 
sk_test_4eC39HqLyjWDarjtT1zdp7dc
: \
  -X "POST" \
  -d "customer"="{{CUSTOMER_ID}}" \
  -d "amount"=1099 \
  -d "currency"="eur" \
  -d "automatic_payment_methods[enabled]"=true \

Before displaying the mobile Payment Element, your checkout page should:

• Show the products being purchased and the total amount
• Collect any required shipping information using the Address Element
• Include a checkout button to present Stripe’s UI

Initialize a PaymentSheet instance inside onCreate of your checkout Activity, passing a method to handle the result.

import com.stripe.android.paymentsheet.PaymentSheet

class CheckoutActivity : AppCompatActivity() {
  lateinit var paymentSheet: PaymentSheet

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    paymentSheet = PaymentSheet(this, ::onPaymentSheetResult)
  }

  fun onPaymentSheetResult(paymentSheetResult: PaymentSheetResult) {
    // implemented in the next steps
  }
}

Next, fetch the PaymentIntent client secret, Ephemeral Key secret, Customer ID, and publishable key from the endpoint you created in the previous step. Set the publishable key using PaymentConfiguration and store the others for use when you present the PaymentSheet.

import com.stripe.android.paymentsheet.PaymentSheet
// Add the following lines to build.gradle to use this example's networking library:
//   implementation 'com.github.kittinunf.fuel:fuel:2.3.1'
//   implementation 'com.github.kittinunf.fuel:fuel-json:2.3.1'
import com.github.kittinunf.fuel.httpPost
import com.github.kittinunf.fuel.json.responseJson

class CheckoutActivity : AppCompatActivity() {
  lateinit var paymentSheet: PaymentSheet
  lateinit var customerConfig: PaymentSheet.CustomerConfiguration
  lateinit var paymentIntentClientSecret: String

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    paymentSheet = PaymentSheet(this, ::onPaymentSheetResult)
    "Your backend endpoint/payment-sheet".httpPost().responseJson { _, _, result ->
      if (result is Success) {
        val responseJson = result.get().obj()
        paymentIntentClientSecret = responseJson.getString("paymentIntent")
        customerConfig = PaymentSheet.CustomerConfiguration(
          responseJson.getString("customer"),
          responseJson.getString("ephemeralKey")
        )
        val publishableKey = responseJson.getString("publishableKey")
        PaymentConfiguration.init(this, publishableKey)
      }
    }
  }

  fun onPaymentSheetResult(paymentSheetResult: PaymentSheetResult) {
    // implemented in the next steps
  }
}

When the customer taps your checkout button, call presentWithPaymentIntent to present the payment sheet. After the customer completes the payment, the sheet dismisses and the PaymentSheetResultCallback is called with a PaymentSheetResult.

// ...
class CheckoutActivity : AppCompatActivity() {
  lateinit var paymentSheet: PaymentSheet
  lateinit var customerConfig: PaymentSheet.CustomerConfiguration
  lateinit var paymentIntentClientSecret: String
  // ...
  fun presentPaymentSheet() {
    paymentSheet.presentWithPaymentIntent(
      paymentIntentClientSecret,
      PaymentSheet.Configuration(
        merchantDisplayName = "My merchant name",
        customer = customerConfig,
        // Set `allowsDelayedPaymentMethods` to true if your business
        // can handle payment methods that complete payment after a delay, like SEPA Debit and Sofort.
        allowsDelayedPaymentMethods = true
      )
    )
  }

  fun onPaymentSheetResult(paymentSheetResult: PaymentSheetResult) {
    when(paymentSheetResult) {
      is PaymentSheetResult.Canceled -> {
        print("Canceled")
      }
      is PaymentSheetResult.Failed -> {
        print("Error: ${paymentSheetResult.error}")
      }
      is PaymentSheetResult.Completed -> {
        // Display for example, an order confirmation screen
        print("Completed")
      }
    }
  }
}

Stripe sends a payment_intent.succeeded event when the payment completes. Use the Dashboard webhook tool or follow the webhook guide to receive these events and run actions, such as sending an order confirmation email to your customer, logging the sale in a database, or starting a shipping workflow.

Listen for these events rather than waiting on a callback from the client. On the client, the customer could close the browser window or quit the app before the callback executes, and malicious clients could manipulate the response. Setting up your integration to listen for asynchronous events is what enables you to accept different types of payment methods with a single integration.

In addition to handling the payment_intent.succeeded event, we recommend handling two other events when collecting payments with the Payment Element:

Use test payment details and the test redirect page to verify your integration. Click the tabs below to view details for each payment method.