inAppPurchase

进程：

inAppPurchase 模块触发以下事件:

一个或多个 transactions 更新时会触发这一事件。

event Event
transactions Transaction[] - Array of Transaction objects.

方法

`inAppPurchase.purchaseProduct(productID[, quantity])`

productID String - 预付款商品的ID (com.example.app.product1 的ID是 product1).
quantity Integer (可选) - 用户所要购买的商品数量.

Returns Promise<Boolean> - Returns true if the product is valid and added to the payment queue.

在调用purchaseProduct之前，你应该尽可能快的监听transactions-updated事件

Returns Promise<Product[]> - Resolves with an array of objects.

检索商品的描述

Restores finished transactions. This method can be called either to install purchases on additional devices, or to restore purchases for an application that the user deleted and reinstalled.

The payment queue delivers a new transaction for each previously completed transaction that can be restored. Each transaction includes a copy of the original transaction.

`inAppPurchase.getReceiptURL()`

Returns String - the path to the receipt.

完成所有待处理的交易

`inAppPurchase.finishTransactionByDate(date)`

date String - 待完成交易的ISO标准日期格式