36 lines
1.7 KiB
Markdown
36 lines
1.7 KiB
Markdown
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# inAppPurchase _macOS_
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Your application should add a listener before to purchase a product. If there are no listener attached to the queue, the payment queue does not synchronize its list of pending transactions with the Apple App Store.
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## Methods
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The `inAppPurchase` module has the following methods:
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### `inAppPurchase.addTransactionListener(listener)`
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* `listener` Function - Called when transactions are updated by the payment queue.
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* `payment` Object
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* `productIdentifier` String
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* `quantity` Integer
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* `transaction` Object
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* `transactionIdentifier` String
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* `transactionDate` String
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* `originalTransactionIdentifier` String
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* `transactionState` String - The transaction sate (`"SKPaymentTransactionStatePurchasing"`, `"SKPaymentTransactionStatePurchased"`, `"SKPaymentTransactionStateFailed"`, `"SKPaymentTransactionStateRestored"`, or `"SKPaymentTransactionStateDeferred"`)
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* `errorCode` Integer
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* `errorMessage` String
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### `inAppPurchase.purchaseProduct(productID, quantity, callback)`
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* `productID` String - The id of the product to purchase. (the id of `com.example.app.product1` is `product1`).
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* `quantity` Integer (optional) - The number of items the user wants to purchase.
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* `callback` Function (optional) - The callback called when the payment is added to the PaymentQueue. (You should add a listener with `inAppPurchase.addTransactionsListener` to get the transaction status).
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* `isProductValid` Boolean - Determine if the product is valid and added to the payment queue.
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### `inAppPurchase.canMakePayments()`
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Returns `true` if the user can make a payment and `false` otherwise.
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### `inAppPurchase.getReceiptURL()`
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Returns `String`, the path to the receipt.
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