SKPaymentTransaction.transactionState is always .restored

Question

我正在测试我的应用程序自动续期订阅，但SKPaymentTransaction.transactionState永远不会更改为.purchased，而且总是.restored。一切都很好，但自从我第一次打电话给SKPaymentQueue.default().restoreCompletedTransactions()以来，我只能得到.restored。我尝试从iPhone中删除该应用程序，重新登录我的沙盒帐户，创建一个新的沙盒帐户，重新启动Xcode，清理构建文件夹,...我做错了什么？请在下面找到我的代码：

func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
let appDelegate = UIApplication.shared.delegate as! AppDelegate
switch transaction.transactionState {
case .purchased:
SKPaymentQueue.default().finishTransaction(transaction)
print(".purchased")
case .failed:
SKPaymentQueue.default().finishTransaction(transaction)
print(".failed")
case .restored:
SKPaymentQueue.default().finishTransaction(transaction)
print(".restored")
default:
break
}
}
}
@IBAction func restore(_ sender: UIBarButtonItem) {
SKPaymentQueue.default().restoreCompletedTransactions()
}
func subscribe() {
if SKPaymentQueue.canMakePayments() {
let payment = SKPayment(product: availableProducts[indexPath.row])
SKPaymentQueue.default().add(payment)
}
}
override func viewDidLoad() {
super.viewDidLoad()
SKPaymentQueue.default().add(self)
}

Answer 1

可能，它总是.restored，因为transaction还没有完成。

---

通常我们把SKPaymentQueue.default().add(observer)放在AppDelegate，

以便交易将始终得到处理。

class AppDelegate{
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
SKPaymentQueue.default().add(self)
}
}
extension AppDelegate: SKPaymentTransactionObserver {
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
// ...
}
}

---

当你把SKPaymentQueue.default().add(observer)放在ViewController，因为ViewController可能会被推和弹出。

也就是说，ViewController实例被分配和解除分配。

由于事务处理是异步的，因此与其事务对应的ViewController实例可能不存在，或者不是同一个实例。

所以它的行为很笨拙。

Answer 2

我在这里找到： 清除 SKPAyments队列：强制未完成的事务完成 我的问题是我有一些未完成的待处理事务，所以我将其添加到我的viewDidLoad中以"强制"完成所有事务。我是否应该永久包含它以避免它再次发生？

let currentQueue: SKPaymentQueue = SKPaymentQueue.default();
for transaction in currentQueue.transactions {
currentQueue.finishTransaction(transaction);
}

Answer 3

你应该检查队列的结果

let transactions = queue.transactions
if transactions.count > 0 {
for transaction in queue.transactions {
if (transaction.transactionState == SKPaymentTransactionState.failed) {
//possibly handle the error
purchaseStatusBlock?(.failed)
} else if (transaction.transactionState == SKPaymentTransactionState.purchased) {
//deliver the content to the user
purchaseStatusBlock?(.purchased)
} else if (transaction.transactionState == SKPaymentTransactionState.restored) {
//deliver the content to the user
purchaseStatusBlock?(.restored)
} else {
//handle other transaction states
}
}
} else {
purchaseStatusBlock?(.failed)
}