ios - 应用内购买仅在首次应用启动时失败

问题描述

我的应用中有应用内购买。点击按钮后我的购买被激活。但是，如果我第一次打开应用程序并单击按钮，我会得到以下结果：No products found with identifier

从这个函数：

func purchaseProduct(identifier:String) {
    guard let product = self.product(identifier: identifier) else {
        print("No products found with identifier: \(identifier)")
            
        // fire purchase status: failed notification
        delegate?.purchaseStatusDidUpdate(PurchaseStatus.init(state: .failed, error: PurchaseError.productNotFound, transaction: nil, message:"An error occured"))
        return
    }
    //.etc
}

但如果我再次按下按钮，一切正常。此外，如果我关闭应用程序，再次打开并按下按钮 mu 购买工作正常。为什么这只发生在第一次应用启动时？以及如何解决？

我将此代码用于应用内购买https://stackoverflow.com/a/51688015

更新

有以下课程，我认为重点在于：

class MyAppProductStore: Store {
    static let shared = MyAppProductStore()
    
    // purchase processor
    var itunes: iTunesStore = iTunesStore()
    
    init() {
        // register for purchase status update callbacks
        itunes.delegate = self
        
        validateProducts(MyProductIds.allIdentifiers())
    }
    
    /// This function is called during the purchase/restore purchase process with each status change in the flow. If the status is complete then access to the product should be granted at this point.
    ///
    /// - Parameter status: The current status of the transaction.
    internal func processPurchaseStatus(_ status: PurchaseStatus) {
        switch status.state {
        case .initiated:
            // TODO: show alert that purchase is in progress...
            break
        case .complete:
            if let productID = status.transaction?.payment.productIdentifier {
                // Store product id in UserDefaults or some other method of tracking purchases
                UserDefaults.standard.set(true , forKey: productID)
                UserDefaults.standard.synchronize()
            }
        case .cancelled:
            break
        case .failed:
            // TODO: notify user with alert...
            break
        }
    }
}

extension MyAppProductStore: iTunesPurchaseStatusReceiver, iTunesProductStatusReceiver {
    func purchaseStatusDidUpdate(_ status: PurchaseStatus) {
        // process based on received status
        processPurchaseStatus(status)
    }
    
    func restoreStatusDidUpdate(_ status: PurchaseStatus) {
        // pass this into the same flow as purchasing for unlocking products
        processPurchaseStatus(status)
    }
    
    func didValidateProducts(_ products: [SKProduct]) {
        print("Product identifier validation complete with products: \(products)")
        // TODO: if you have a local representation of your products you could
        // sync them up with the itc version here
    }
    
    func didReceiveInvalidProductIdentifiers(_ identifiers: [String]) {
        // TODO: filter out invalid products? maybe... by default isActive is false
    }
}

如果我在调用它后单击按钮，一切都会正常工作。

要调用它，我在其中使用以下行var store = MyAppProductStore()，AppDelegate如下所示：

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var store = MyAppProductStore()
.etc

这是最快的上课方式吗？

标签： iosswiftin-app-purchase

ios - 应用内购买仅在首次应用启动时失败

问题描述

解决方案

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