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Merchant iOS SDKs

Methods and parameters

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Revolut Pay iOS SDK

This document provides a detailed reference for the parameters, objects, and methods available in the Revolut Pay iOS SDK.

Methods and parameters

`RevolutPaymentsSDK.configure` method

The RevolutPaymentsSDK.configure method is used to set up the SDK with necessary configurations, such as the merchant's public API key and the environment in which the SDK will operate. Configuring the SDK needs to happen before any SDK usage, can be done on app launch by adding this to AppDelegate.

RevolutPaymentsSDK.configure(
    with: .init(
        merchantPublicKey: String,
        environment: Environment
    )
)

Parameter	Description	Format	Required
`merchantPublicKey`	The merchant's public API key used for authorization.	`String`	Yes
`environment`	This parameter specifies the environment in which the SDK operates. If omitted it defaults to `.production`. Possible values are: `.production` `.sandbox`	`Environment`	Yes

`RevolutPayKit.button` method

This method creates a RevolutPayButton, a UIView that handles the entire Revolut Pay flow when tapped. It is the primary way to initiate a payment. The method can be configured for one of three payment flows:

Standard payment: No optional features are enabled.
Fast checkout: Set shouldRequestShipping to true to collect shipping information.
Merchant-Initiated Transaction (MIT): Set savePaymentMethodForMerchant to true to save the customer's payment details for future use.

func button(
    style: RevolutPayButton.Style,
    returnURL: String,
    savePaymentMethodForMerchant: Bool, // or shouldRequestShipping: Bool,
    customer: Customer? = nil,
    createOrder: @escaping CreateOrderCallback,
    completion: @escaping (RevolutPayKit.PaymentResult) -> Void
) -> RevolutPayButton

Parameter	Description	Format	Required
`style`	Contains styling parameters of the button.	`RevolutPayButton.Style`	Yes
`returnURL`	Upon payment completion, the Revolut app attempts to open this URL. This can be a Universal Link or a custom URL scheme. Possible values: Universal link: `https://www.${my_app_name}.com/revolut-pay` Custom URL scheme: `${my_app_name}://revolut-pay`	`String`	Yes
`savePaymentMethodForMerchant`	If `true`, the customer gives permission for their payment method to be saved for future merchant-initiated transactions. Default is `false`. To learn more about merchant initiated transactions, see: Accept payments via Revolut Pay - iOS: Advanced features.	`Boolean`	No
`shouldRequestShipping`	If `true`, the shipping address and delivery method are collected from the user via the Revolut Pay flow. Requires backend support for Fast checkout. Default is `false`. To learn more about Fast checkout, see: Accept payments via Revolut Pay - iOS: Advanced features.	`Boolean`	No
`customer`	An object containing customer details you already have, which will be pre-filled during widget initialisation.	`Customer`	No
`createOrder`	A callback function that is executed after the user taps the button. Your app should request an order `token` from your backend and pass it to the `createOrderHandler`.	`Closure`	Yes
`completion`	A closure that is called when the payment flow is complete. It returns a `PaymentResult` indicating success, failure, or user abandonment. Possible values `.success` - The payment was successful. `.failure` - An error occurred during the payment. `.userAbandonedPayment` - The customer abandoned the payment flow. Further considerations The completion closure might indicate a failure even if the user later completes the payment, such as in scenarios where they initially abandon the payment or if there is a transient issue during payment processing. Therefore, it is crucial to verify the final payment status with your backend before concluding that the payment has failed permanently. This helps in avoiding scenarios where a transaction might be unintentionally processed more than once.	`Closure`	Yes

`RevolutPayKit.swiftUIButton` method

This method creates a SwiftUI-native Revolut Pay button that functions identically to the UIKit version.

@ViewBuilder func swiftUIButton(
    style: RevolutPayButton.Style,
    returnURL: String,
    savePaymentMethodForMerchant: Bool, // or shouldRequestShipping: Bool,
    customer: Customer? = nil,
    createOrder: @escaping CreateOrderCallback,
    completion: @escaping (RevolutPayKit.PaymentResult) -> Void
) -> some View

Parameter	Description	Format	Required
`style`	Contains styling parameters of the button.	`RevolutPayButton.Style`	Yes
`returnURL`	Upon payment completion, the Revolut app attempts to open this URL. This can be a Universal Link or a custom URL scheme. Possible values: Universal link: `https://www.${my_app_name}.com/revolut-pay` Custom URL scheme: `${my_app_name}://revolut-pay`	`String`	Yes
`savePaymentMethodForMerchant`	If `true`, the customer gives permission for their payment method to be saved for future merchant-initiated transactions. Default is `false`. To learn more about merchant initiated transactions, see: Accept payments via Revolut Pay - iOS: Advanced features.	`Boolean`	No
`shouldRequestShipping`	If `true`, the shipping address and delivery method are collected from the user via the Revolut Pay flow. Requires backend support for Fast checkout. Default is `false`. To learn more about Fast checkout, see: Accept payments via Revolut Pay - iOS: Advanced features.	`Boolean`	No
`customer`	An object containing customer details you already have, which will be pre-filled during widget initialisation.	`Customer`	No
`createOrder`	A callback function that is executed after the user taps the button. Your app should request an order `token` from your backend and pass it to the `createOrderHandler`.	`Closure`	Yes
`completion`	A closure that is called when the payment flow is complete. It returns a `PaymentResult` indicating success, failure, or user abandonment. Possible values `.success` - The payment was successful. `.failure` - An error occurred during the payment. `.userAbandonedPayment` - The customer abandoned the payment flow. Further considerations The completion closure might indicate a failure even if the user later completes the payment, such as in scenarios where they initially abandon the payment or if there is a transient issue during payment processing. Therefore, it is crucial to verify the final payment status with your backend before concluding that the payment has failed permanently. This helps in avoiding scenarios where a transaction might be unintentionally processed more than once.	`Closure`	Yes

`RevolutPayKit.pay` method

This method allows you to initiate the Revolut Pay flow programmatically without requiring the user to tap a RevolutPayButton.

func pay(
    orderToken: String,
    returnURL: String,
    savePaymentMethodForMerchant: Bool, // or shouldRequestShipping: Bool,
    customer: Customer? = nil,
    completion: @escaping (RevolutPayKit.PaymentResult) -> Void
)

Parameter	Description	Format	Required
`orderToken`	The `token` for the order created via the Merchant API, passed to the SDK from your backend.	`String`	Yes
`returnURL`	Upon payment completion, the Revolut app attempts to open this URL. This can be a Universal Link or a custom URL scheme. Possible values: Universal link: `https://www.${my_app_name}.com/revolut-pay` Custom URL scheme: `${my_app_name}://revolut-pay`	`String`	Yes
`savePaymentMethodForMerchant`	If `true`, the customer gives permission for their payment method to be saved for future merchant-initiated transactions. Default is `false`. To learn more about merchant initiated transactions, see: Accept payments via Revolut Pay - iOS: Advanced features.	`Boolean`	No
`shouldRequestShipping`	If `true`, the shipping address and delivery method are collected from the user via the Revolut Pay flow. Requires backend support for Fast checkout. Default is `false`. To learn more about Fast checkout, see: Accept payments via Revolut Pay - iOS: Advanced features.	`Boolean`	No
`customer`	An object containing customer details you already have, which will be pre-filled during widget initialisation.	`Customer`	No
`completion`	A closure that is called when the payment flow is complete. It returns a `PaymentResult` indicating success, failure, or user abandonment.	`Closure`	Yes

`RevolutPayKit.promotionalBanner` method

This method creates a UIView that displays a promotional banner inviting users to join Revolut.

func promotionalBanner(
    style: PromotionalBannerStyle = .init(),
    transactionId: String,
    amount: Int64?,
    currency: Currency,
    customer: PromotionalBannerCustomer?
) -> UIView

Parameter	Description	Format	Required
`style`	Contains styling parameters for the banner.	`PromotionalBannerStyle`	No
`transactionId`	The ID of the transaction corresponding to the promotional offer.	`String`	Yes
`amount`	The amount paid by the customer, in the currency's smallest unit (e.g., 1000 for £10.00).	`Int64`	No
`currency`	The payment currency in ISO 4217 format. Possible Values `.AED` `.AUD` `.BGN` `.CAD` `.CHF` `.CZK` `.DKK` `.EUR` `.GBP` `.HKD` `.HRK` `.HUF` `.ILS` `.JPY` `.MXN` `.NOK` `.NZD` `.PLN` `.QAR` `.RON` `.RUB` `.SAR` `.SEK` `.SGD` `.THB` `.TRY` `.USD` `.ZAR`	`Currency`	Yes
`customer`	An object containing customer details to pre-fill the offer.	`PromotionalBannerCustomer`	No

Helper objects and types

`Customer` object

This object holds the customer's information. To create a Customer object, use its initialser:

public init(
    name: String? = nil,
    dateOfBirth: GenericDate? = nil,
    email: String? = nil,
    phone: String? = nil,
    countryCode: String? = nil
)

Parameter	Description	Format	Required
`name`	Customer's full name.	`String`	No
`dateOfBirth`	Customer's date of birth.	`GenericDate`	No
`email`	Customer's email address.	`String`	No
`phone`	Customer's phone number, including the `+` sign and country code.	`String`	No
`countryCode`	Customer's country in ISO 3166-1 alpha-2 format (e.g., "GB").	`String`	No

`GenericDate` object

This object represents a simple Gregorian calendar date. To create a GenericDate object, use its failable initialiser:

public init?(
    day: UInt,
    month: UInt,
    year: UInt
)

Parameter	Description	Format	Required
`day`	Day of the date. Must be between 1 and 31.	`UInt`	Yes
`month`	Month of the date. Must be between 1 and 12.	`UInt`	Yes
`year`	Year of the date. Must have four digits (e.g. 1970).	`UInt`	Yes

`RevolutPayButton.Style` object

This object defines the visual style of the RevolutPayButton. To create a Style object, use its initializer:

public init(
    size: Size = .large,
    variants: VariantModes = .init(),
    radius: Radius = .small,
    attachmentStyle: AttachmentStyle? = .init()
)

Parameter	Description	Format	Required
`size`	The size of the button. Default is `.large`.	`Size`	No
`variants`	The color schemes for light and dark modes.	`VariantModes`	No
`radius`	The corner radius of the button. Default is `.small`.	`Radius`	No
`attachmentStyle`	The style of the optional attachment box, used to attract users.	`AttachmentStyle`	No

`RevolutPayButton.Style.Size`

An enum that defines the size of the button, which affects its intrinsic content size.

public enum Size {
    case large
    case medium
    case small
    case extraSmall
}

`RevolutPayButton.Style.VariantModes`

A struct that defines the button's appearance for light and dark modes. To create a VariantModes object, use its initialiser:

public init(
    lightMode: Style.Variant = .dark,
    darkMode: Style.Variant = .light
)

Parameter	Description	Format	Required
`lightMode`	The variant to use for light mode.	`Variant`	No
`darkMode`	The variant to use for dark mode.	`Variant`	No

`RevolutPayButton.Style.Variant`

An enum that defines the colour scheme of the button.

public enum Variant {
    case light
    case dark
    case lightOutlined
    case darkOutlined
}

Case	Description
`light`	Light background. Should be used on dark screen backgrounds.
`dark`	Dark background. Should be used on light screen backgrounds.
`lightOutlined`	Light background with a dark outline.
`darkOutlined`	Dark background with a light outline.

`RevolutPayButton.Style.Radius`

An enum that defines the corner radius of the button.

public enum Radius {
    case none
    case small
    case medium
    case large
    @available(*, deprecated, renamed: "large")
    case rounded
}

`RevolutPayButton.Style.AttachmentStyle`

A struct that defines the style for the optional attachment box displayed below the button.

public struct AttachmentStyle {
    let currency: Currency
}

Parameter	Description	Format	Required
`currency`	The currency displayed in the reward text in ISO 4217 format.	`Currency`	Yes

`PromotionalBannerStyle` object

This object defines the visual style of the promotional banner. To create a PromotionalBannerStyle object, use its initialiser:

public init(
    accentColor: UIColor? = nil,
    backgroundColor: UIColor? = nil,
    bannerCornerRadius: CGFloat = 16,
    componentCornerRadius: CornerRadius = .default,
    border: Border? = nil
)

Parameter	Description	Format	Required
`accentColor`	The banner's accent color. Other colors are derived from this.	`UIColor`	No
`backgroundColor`	The banner's background color.	`UIColor`	No
`bannerCornerRadius`	The corner radius of the banner's view.	`CGFloat`	No
`componentCornerRadius`	The corner radius of the banner's components.	`CornerRadius`	No
`border`	The banner's border configuration.	`Border`	No

`PromotionalBannerStyle.Border` object

This object defines the style for the promotional banner's border. To create a Border object, use its initialiser:

public init(
    color: UIColor? = nil,
    width: CGFloat = 1
)

Parameter	Description	Format	Required
`color`	The color of the banner's border.	`UIColor`	No
`width`	The width of the banner's border.	`CGFloat`	No

`PromotionalBannerStyle.CornerRadius` enumeration

This enum defines the corner radius style for components within the promotional banner.

public enum CornerRadius {
    case custom(CGFloat)
    case circular
    case `default`
}

Case	Description
`custom(CGFloat)`	A custom corner radius with a specific `CGFloat` value.
`circular`	A fully rounded corner radius, creating a circular shape.
`default`	The default corner radius style provided by the SDK.

`PromotionalBannerCustomer` object

This object holds the customer's information for the promotional banner. To create a PromotionalBannerCustomer object, use its initialiser:

public init(
    name: String? = nil,
    email: String? = nil,
    phone: String? = nil,
    country: Country? = nil
)

Parameter	Description	Format	Required
`name`	Customer's full name.	`String`	No
`email`	Customer's email address.	`String`	No
`phone`	Customer's phone number, including the `+` sign and country code.	`String`	No
`country`	Customer's country.	`Country`	No

`Currency` enumeration

This enum represents currency in ISO 4217 format. Use dot notation (e.g., .GBP) to select a value.

public enum Currency: String {
    case AED
    case AUD
    case BGN
    case CAD
    case CHF
    case CZK
    case DKK
    case EUR
    case GBP
    case HKD
    case HRK
    case HUF
    case ILS
    case JPY
    case MXN
    case NOK
    case NZD
    case PLN
    case QAR
    case RON
    case RUB
    case SAR
    case SEK
    case SGD
    case THB
    case TRY
    case USD
    case ZAR
}

`Country` enumeration

This enum maps ISO 3166-1 alpha-2 country codes to human-readable format. Use dot notation (e.g., .unitedKingdom) to select a value.

public enum Country: String {
    case austria = "AT"
    case belgium = "BE"
    case bulgaria = "BG"
    case croatia = "HR"
    case cyprus = "CY"
    case czechRepublic = "CZ"
    case denmark = "DK"
    case estonia = "EE"
    case finland = "FI"
    case france = "FR"
    case germany = "DE"
    case greece = "GR"
    case hungary = "HU"
    case iceland = "IS"
    case ireland = "IE"
    case italy = "IT"
    case latvia = "LV"
    case liechtenstein = "LI"
    case lithuania = "LT"
    case luxembourg = "LU"
    case malta = "MT"
    case monaco = "MO"
    case netherlands = "NL"
    case norway = "NO"
    case poland = "PL"
    case portugal = "PT"
    case romania = "RO"
    case spain = "ES"
    case slovenia = "SI"
    case slovakia = "SK"
    case sweden = "SE"
    case switzerland = "CH"
    case ukraine = "UA"
    case unitedKingdom = "GB"
    case vaticanCity = "VA"
    case canada = "CA"
    case mexico = "MX"
    case usa = "US"
    case brazil = "BR"
    case hongKong = "HK"
    case india = "IN"
    case japan = "JP"
    case kazakhstan = "KZ"
    case macau = "MC"
    case singapore = "SG"
    case australia = "AU"
    case newZealand = "NZ"
}

Callbacks and results

`RevolutPayKit.PaymentResult` enumeration

This enum represents the final outcome of a payment flow and is returned in the completion closure.

Case	Description
`.success`	The payment was successful.
`.failure(Error)`	The payment failed with an associated `RevolutPayKit.Error`.
`.userAbandonedPayment`	The user dismissed or abandoned the payment flow.

`RevolutPayKit.CreateOrderHandler` class

This handler is provided in the createOrder callback and is used to pass the order token back to the SDK.

Method	Description
`set(orderToken: String)`	Sets the order `token` obtained from your backend to proceed with the payment.
`cancel()`	Stops the payment flow.

Errors

`RevolutPayKit.Error` enumeration

This enum defines the possible errors that can be returned in the .failure case of a PaymentResult.

public enum Error: Swift.Error {
    case sdkNotConfigured
    case kitAlreadyInUse
    case paymentFailed
    case cantBuildRevolutUniversalLink(token: String, returnURL: String)
    case cantAuthenticate
    case apiError(Swift.Error?)
    case internalError
}

Case	Description
`sdkNotConfigured`	The SDK was not configured before use. Ensure `RevolutPaymentsSDK.configure(with:)` has been called.
`kitAlreadyInUse`	The `RevolutPayKit` instance is already processing another payment.
`paymentFailed`	The payment failed for reasons like insufficient funds.
`cantBuildRevolutUniversalLink`	The SDK could not construct the necessary URL for redirection, possibly due to an invalid token or return URL.
`cantAuthenticate`	The user could not be authenticated.
`apiError`	An internal API error occurred, such as using a token for an already paid order.
`internalError`	An unspecified internal error occurred.

PreviousIntroduction

Methods and parameters
Helper objects and types
Callbacks and results
- RevolutPayKit.PaymentResult enumeration
- RevolutPayKit.CreateOrderHandler class
Errors
- RevolutPayKit.Error enumeration

Revolut Pay iOS SDK

Methods and parameters​

RevolutPaymentsSDK.configure method​

RevolutPayKit.button method​

Further considerations

RevolutPayKit.swiftUIButton method​

Further considerations

RevolutPayKit.pay method​

RevolutPayKit.promotionalBanner method​

Helper objects and types​

Customer object​

GenericDate object​

RevolutPayButton.Style object​

RevolutPayButton.Style.Size​

RevolutPayButton.Style.VariantModes​

RevolutPayButton.Style.Variant​

RevolutPayButton.Style.Radius​

RevolutPayButton.Style.AttachmentStyle​

PromotionalBannerStyle object​

PromotionalBannerStyle.Border object​

PromotionalBannerStyle.CornerRadius enumeration​

PromotionalBannerCustomer object​

Currency enumeration​

Country enumeration​

Callbacks and results​

RevolutPayKit.PaymentResult enumeration​

RevolutPayKit.CreateOrderHandler class​

Errors​

RevolutPayKit.Error enumeration​

Methods and parameters

`RevolutPaymentsSDK.configure` method

`RevolutPayKit.button` method

`RevolutPayKit.swiftUIButton` method

`RevolutPayKit.pay` method

`RevolutPayKit.promotionalBanner` method

Helper objects and types

`Customer` object

`GenericDate` object

`RevolutPayButton.Style` object

`RevolutPayButton.Style.Size`

`RevolutPayButton.Style.VariantModes`

`RevolutPayButton.Style.Variant`

`RevolutPayButton.Style.Radius`

`RevolutPayButton.Style.AttachmentStyle`

`PromotionalBannerStyle` object

`PromotionalBannerStyle.Border` object

`PromotionalBannerStyle.CornerRadius` enumeration

`PromotionalBannerCustomer` object

`Currency` enumeration

`Country` enumeration

Callbacks and results

`RevolutPayKit.PaymentResult` enumeration

`RevolutPayKit.CreateOrderHandler` class

Errors

`RevolutPayKit.Error` enumeration