iOS 中未购买的用户按下恢复购买按钮会发生什么？

Question

我的沙盒测试账号可以购买非消耗品并恢复。一切正常。但是，如果该帐户以前没有购买过该项目，则按恢复按钮不会执行任何操作。我在调试面板中什么也看不到。我期待 iOS 检测某个用户是否购买了该商品，如果没有，则显示一条消息，要求他们购买。它是那样工作还是当前的行为是完全可以接受的？

这是连接到主情节提要内按钮的恢复购买代码（Swift）：

@IBAction func restoreButtonPressed(sender: UIButton) {
    statusLabel.text = "Status: Restoring Purchase"
    SKPaymentQueue.defaultQueue().addTransactionObserver(self)
    SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
}

其他实现的方法包括：

正常购买有效

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

适用于正常恢复

func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue!) {}

以前从未见过来自此方法的消息

func paymentQueue(queue: SKPaymentQueue!, restoreCompletedTransactionsFailedWithError error: NSError!) {}

谢谢！

Answer 1

您可以检查队列中是否有任何返回的交易，如果没有则表示没有要恢复的购买：

func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue!) {
  if queue.transactions.count == 0 {
    let alert = UIAlertView()
    alert.title = "Oops"
    alert.message = "There are no purchases to restore, please buy one"
    alert.addButtonWithTitle("Buy")
    alert.addButtonWithTitle("Cancel")
    alert.show()
 }
}

Answer 2

你可以试试这个:

func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {


    for transaction in transactions {

        switch transaction.transactionState {
        case .purchasing: print("Payment is being processed")

        case .purchased: print("USER PURCHASED YOUR PRODUCT")

            SKPaymentQueue.default().finishTransaction(transaction)

        case .restored:

            if transaction.original?.transactionIdentifier != nil { // this identifier uniquely identifies a completed tansaction.
        //    queue.restoreCompletedTransactions()

                print("THE BUYER BOUGHT THIS PRODUCT BEFORE")

            } else {
             /*
              display UIAlertController showing an error
              there is no receipts, user never purchased this product.
                                */
            }


        case .failed:
            self.dismiss(animated: true, completion: nil)

            SKPaymentQueue.default().finishTransaction(transaction)
        case .deferred:

           print("pending")

        @unknown default:
           break
        }


    }


}

iOS 中未购买的用户按下恢复购买按钮会发生什么？

What should happen when non-purchased user press the restore purchase button in iOS?

in-app-purchase

ios

swift