SKPaymentTransactionObserver.paymentQueue:updatedTransactions 返回一个交易数组。当我付款时，我如何知道我的付款是哪笔交易？我付款时它总是返回一笔交易吗？
同时，在恢复交易时也会调用这个观察者函数。那么，处理 updatedTransactions 的最佳实践是什么？
顺便说一句，我的订阅产品是自动续订。
【问题讨论】：
标签： ios transactions in-app-purchase payment auto-renewable
遍历交易循环并检查每个交易。
public func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
switch (transaction.transactionState) {
case .purchased:
completeTransaction(transaction: transaction)
break
case .failed:
failedTransaction(transaction: transaction)
break
case .restored:
restoreTransaction(transaction: transaction)
break
case .deferred:
// TODO show user that is waiting for approval
break
case .purchasing:
break
}
}
}
private func completeTransaction(transaction: SKPaymentTransaction) {
print("completeTransaction...")
deliverPurchaseForIdentifier(identifier: transaction.payment.productIdentifier)
SKPaymentQueue.default().finishTransaction(transaction)
}
private func restoreTransaction(transaction: SKPaymentTransaction) {
guard let productIdentifier = transaction.original?.payment.productIdentifier else { return }
print("restoreTransaction... \(productIdentifier)")
deliverPurchaseForIdentifier(identifier: productIdentifier)
SKPaymentQueue.default().finishTransaction(transaction)
}
private func failedTransaction(transaction: SKPaymentTransaction) {
if let error = transaction.error as NSError? {
if error.domain == SKErrorDomain {
// handle all possible errors
switch (error.code) {
case SKError.unknown.rawValue:
print("Unknown error")
BaseViewController.currentViewController?.Alert(title: MFErrors.purchaseFaild.messgae.title, msg: MFErrors.purchaseFaild.messgae.body)
case SKError.clientInvalid.rawValue:
print("client is not allowed to issue the request")
BaseViewController.currentViewController?.Alert(title: MFErrors.accountNotAllowedToMakePurchase.messgae.title, msg: MFErrors.accountNotAllowedToMakePurchase.messgae.body)
case SKError.paymentCancelled.rawValue:
print("user cancelled the request")
case SKError.paymentInvalid.rawValue:
print("purchase identifier was invalid")
case SKError.paymentNotAllowed.rawValue:
print("this device is not allowed to make the payment")
BaseViewController.currentViewController?.Alert(title: MFErrors.purchaseFaild.messgae.title, msg: MFErrors.purchaseFaild.messgae.body)
default:
break;
}
}
ProgressViewManager.shared.hide()
}
SKPaymentQueue.default().finishTransaction(transaction)
}
private func deliverPurchaseForIdentifier(identifier: String?) {
guard let identifier = identifier else { return }
//Check if this transactions is a subscription
//SubscriptionsProductIdentifiers is an array of subscriptions product ids you sent to the app store to get SKProducts
//If subscription
if SubscriptionsProductIdentifiers.contains(identifier) {
}else{
//If non-consumable, consumables etc...
}
}
这是我之前回答中的完整商店经理： How to handle shouldAddStorePayment for In-App Purchases in iOS 11?
【讨论】：