It provides convenience methods for in-app billing. You can create one instance of this class for your application and use it to process in-app billing operations. It provides synchronous (blocking) and asynchronous (non-blocking) methods for many common in-app billing operations.

The equivalent Google Play Billing Library class can be found at the Android developer documentation for BillingClient.

Constructors

Name	Summary
BillingClient	constructor()

Types

Name	Summary
AgeCategory	annotation class AgeCategory Age Category of the user.
BillingResponseCode	annotation class BillingResponseCode Possible response codes.
Builder	class Builder Builder to configure and create a BillingClient instance.
Companion	object Companion
ConnectionState	annotation class ConnectionState Connection state of billing client.
FeatureType	annotation class FeatureType Features/capabilities supported by isFeatureSupported.
ProductType	annotation class ProductType Supported Product types.
SkuType	annotation class ~~SkuType~~ Supported SKU types.

Functions

Name	Summary
acknowledgePurchase	abstract fun acknowledgePurchase(params: AcknowledgePurchaseParams, listener: <Error class: unknown class>) Acknowledges in-app purchases.
consumeAsync	abstract fun consumeAsync(params: ConsumeParams, listener: <Error class: unknown class>) Consumes a given in-app product. Consuming can only be done on an item that’s owned, and as a result of consumption, the user will no longer own it.
createAlternativeBillingOnlyReportingDetailsAsync	abstract fun createAlternativeBillingOnlyReportingDetailsAsync(listener: <Error class: unknown class>) Google Play Billing Library allows developers to create alternative billing only purchase details that can be used to report a transaction made via alternative billing without user choice to use Google Play billing.
createExternalOfferReportingDetailsAsync	abstract fun createExternalOfferReportingDetailsAsync(listener: <Error class: unknown class>) Creates purchase details that can be used to report a transaction made via external offer.
endConnection	abstract fun endConnection() Closes the connection and releases all held resources such as service connections.
getBillingConfigAsync	abstract fun getBillingConfigAsync(params: GetBillingConfigParams, listener: <Error class: unknown class>) Gets the billing config, which stores configuration used to perform billing operations.
getConnectionState	abstract fun getConnectionState(): Int Get the current billing client connection state.
isAlternativeBillingOnlyAvailableAsync	abstract fun isAlternativeBillingOnlyAvailableAsync(listener: <Error class: unknown class>) In the Google Play Billing Library, this checks the availability of offering alternative billing without user choice to use Google Play billing.
isExternalOfferAvailableAsync	abstract fun isExternalOfferAvailableAsync(listener: <Error class: unknown class>) Checks the availability of providing external offer.
isFeatureSupported	abstract fun isFeatureSupported(feature: String): BillingResult Checks if the specified feature or capability is supported.
isReady	abstract fun isReady(): Boolean Checks if the client is currently connected to the service, so that requests to other methods will succeed.
launchBillingFlow	abstract fun launchBillingFlow(activity: <Error class: unknown class>, params: BillingFlowParams): BillingResult Initiates the billing flow for an in-app purchase or subscription.
launchPriceChangeConfirmationFlow	abstract fun ~~launchPriceChangeConfirmationFlow~~(activity: <Error class: unknown class>, params: PriceChangeFlowParams, listener: <Error class: unknown class>) Launch a price change confirmation flow.
queryAgeCategoryAsync	abstract fun queryAgeCategoryAsync(listener: <Error class: unknown class>) Returns the AgeCategory of the user.
queryProductDetailsAsync	abstract fun queryProductDetailsAsync(params: QueryProductDetailsParams, listener: <Error class: unknown class>) Performs a network query the details of products available for sale in your app.
queryPurchaseHistoryAsync	abstract fun ~~queryPurchaseHistoryAsync~~(queryPurchaseHistoryParams: QueryPurchaseHistoryParams, listener: <Error class: unknown class>) abstract fun ~~queryPurchaseHistoryAsync~~(skuType: String, listener: <Error class: unknown class>) Returns purchases details for items bought within your app. Only the most recent purchase made by the user for each SKU is returned.
queryPurchasesAsync	abstract fun queryPurchasesAsync(queryPurchasesParams: QueryPurchasesParams, listener: <Error class: unknown class>) abstract fun ~~queryPurchasesAsync~~(skuType: String, listener: <Error class: unknown class>) Returns purchases details for currently owned items bought within your app.
querySkuDetailsAsync	abstract fun ~~querySkuDetailsAsync~~(params: SkuDetailsParams, listener: <Error class: unknown class>) Performs a network query to get SKU details and return the result asynchronously.
showAlternativeBillingOnlyInformationDialog	abstract fun showAlternativeBillingOnlyInformationDialog(activity: <Error class: unknown class>, listener: <Error class: unknown class>): BillingResult Shows the alternative billing only information dialog on top of the calling app.
showExternalOfferInformationDialog	abstract fun showExternalOfferInformationDialog(activity: <Error class: unknown class>, listener: <Error class: unknown class>): BillingResult Shows the external offer information dialog on top of the calling app.
showInAppMessages	abstract fun showInAppMessages(activity: <Error class: unknown class>, params: InAppMessageParams, listener: <Error class: unknown class>): BillingResult Overlays billing related messages on top of the calling app.
startConnection	abstract fun startConnection(listener: BillingClientStateListener) Starts up BillingClient setup process asynchronously. You will be notified through the BillingClientStateListener listener when the setup process is complete.