# Interfaces

* [\[EN\]AcknowledgeListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/acknowledgelistener)
* [\[EN\]ConsumeListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/consumelistener)
* [\[EN\]IapResultListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/iapresultlistener)
* [\[EN\]ProductDetailsListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/productdetailslistener)
* [\[EN\]PurchaseClientStateListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/purchaseclientstatelistener)
* [\[EN\]PurchasesListener (deprecated)](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/purchaseslistener-deprecated)
* [\[EN\]PurchasesUpdatedListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/purchasesupdatedlistener)
* [\[EN\]QueryPurchasesListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/querypurchaseslistener)
* [\[EN\]RecurringProductListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/recurringproductlistener)
* [\[EN\]StoreInfoListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/storeinfolistener)