Step 1: Include the library in your project.

Ensure the Yuno SDK file is included in your project through Gradle. First, add the repository source using the following code line:

maven { url "" }

After, include the code below in the file build.gradle to add the Yuno SDK dependency to the application.

dependencies {
    implementation 'com.yuno.payments:android-sdk:{last_version}'
  • Permissions

Yuno SDK includes by default INTERNET permission, once it is required to make network requests.

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

Step 2: Initialize SDK with the public key

2.1. To initialize the Yuno SDK, first, you need to get your public API keys from the Yuno dashboard. Then, if you have not implemented a custom application yet, you will need to create one and call the initialize function in the method onCreate() of your application class.

The following code snippet includes an example of a custom application:

class CustomApplication : Application() {
    override fun onCreate() {
        "your api key",
        config: YunoConfig, // This is a data class to use custom configs in the SDK.

2.2. Please use the data class YunoConfig as presented below:

data class YunoConfig(
    val cardFlow: CardFormType = CardFormType.ONE_STEP, // This is optional, CardFormType.ONE_STEP by default, this is to choose Payment and Enrollment Card flow.
    val saveCardEnabled: Boolean = false, // This is to choose if show save card checkbox on cards flows.

2.3. In addition, you need to update your manifest to use your application:


Step 3: Start the checkout process

To start a new payment process with the Full SDK, you need to call the following method on the method onCreate of activity that calls the SDK:

    checkoutSession: "checkout_session",
    countryCode: "country_code_iso",
    callbackOTT: (String?) -> Unit,
    callbackPaymentState: ((String?) -> Unit)?,

Below you find a description of the required parameters to start the checkout.

checkoutSessionThe checkout session is related to the payment.
countryCodeCountry code where the payment is performed. Check the Country reference for a complete list of country codes.
callbackOTTThis parameter is a function that returns a one-time token (OTT) needed to complete the payment back to back. This function is mandatory.
callbackPaymentStateThis parameter is a function that returns the current payment process. Sending this function is not mandatory if you do not need the result.
  • The possible states returned by the callbackPaymentState are presented below:

Step 4: Add the SDK view to the checkout

When implementing the Full SDK version, ensure you incorporate the following view by instantiating our PaymentMethodListView class in your layout to display available payment methods. Additionally, add the .setOnSelectedEvent method—a lambda function—to allow the merchant to know when to enable or disable the pay button.


Step 5: Initiate the payment process

To start a payment process, you have to call the method startPayment ().

callbackOTT: (String?) -> Unit, //Optional - Default null

Step 6: Get the OTT (One Time Token)

Once the customer fills out the requested data in Yuno's payment forms, you will obtain the OTT, which is a required parameter to create a payment via the Payments API POST/payments. You can obtain this data from to onActivityResult explained in the callback section.


The merchant is responsible for handling the loader. Yuno offers an option to use our loader; however, the merchant can use their own loader and must make the corresponding configurations.

Step 7: Create the Payment

Once you have completed the steps described before, you can create a payment. The back-to-back payment creation must be carried out using the Create Payment endpoint. The merchant should call their backend to create the payment within Yuno, using the OTT (One Time Token) and the checkout session.

  • Continue: We recommend integrating the continuePayment method of the SDK after the payment is created because certain asynchronous payment methods require additional action from the customer to complete it. The create_payment API will inform you of this scenario via the sdk_action_required field of the response, which will be returned as true. The yuno.continuePayment() function will display the additional screens to the customers, where they can carry out the necessary actions to complete the payment. Otherwise, this step is not necessary. You need to call the following method:
    showPaymentStatus: Boolean, //Optional - Default true
    callbackPaymentState: ((String?) -> Unit)?, //Optional - Default null

To show your own payment status screens, you should send false in the showPaymentStatus parameter and then get the payment state by callback.

Complementary Features

Yuno Android SDK provides additional services and configurations you can use to improve customers' experience. Use the SDK Customizations to change the SDK appearance to match your brand or to configure the loader.

  • Loader: Control the use of the loader.
  • Save card for future payments: In addition, you can display a checkbox for save or enroll cards using cardSaveEnable: true. Below you can find examples of the checkbox for both card form renders.
  • You also can choose one of the render options for the card form. Below you find screenshots presenting the difference between the cardFormType ONE_STEP and STEP_BY_STEP.
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