使用swift，iOS恢复InApp购买 [英] Restore InApp purchase using swift, iOS

问题描述

我正在应用购买中实施恢复。我有一个按钮，其动作是

I am implementing restore in app purchase. I have a button whose action is

@IBAction func restorePurchases(send : AnyObject){

SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
// if (success) { 
// I want to do something here      
// }
}

我的问题是。

1. 这是正确的恢复方式？


2. 我们如何验证恢复购买的成功行动？

推荐答案

不要忘记检查您是否可以付款：

don't forget to check if you can make a payment:

if (SKPaymentQueue.canMakePayments()) {
  SKPaymentQueue.default().restoreCompletedTransactions()
}

要检查恢复是否良好，你必须遵循协议：
SKPaymentTransactionObserver
然后实现方法：

for check if the restore was good you have to follow the protocol: SKPaymentTransactionObserver and then implement the method:

func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!)

并通过以下方式订阅活动：

and subscribe to the event by doing:

SKPaymentQueue.default().add(self)

最后这里是我检查结果的例子：

Finally here is an exemple of how I check the result:

func paymentQueue(_ queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!)    {
  print("Received Payment Transaction Response from Apple");
  for transaction in transactions {
    switch transaction.transactionState {
    case .purchased, .restored:
      print("Purchased purchase/restored")
      SKPaymentQueue.default().finishTransaction(transaction as SKPaymentTransaction)
      break
    case .failed:
      print("Purchased Failed")
      SKPaymentQueue.default().finishTransaction(transaction as SKPaymentTransaction)
      break
    default:
      print("default")
      break
    }
  }
}

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