在应用程序购买中,"IOS不可用产品"通常指的是那些由于苹果公司的政策或技术限制,无法在iOS设备上购买或使用的商品或服务。这可能包括但不限于数字商品、订阅服务、虚拟货币等。
假设你正在开发一个需要在iOS上购买虚拟货币的应用,以下是一个简单的示例代码:
import StoreKit
class PurchaseManager: NSObject, SKProductsRequestDelegate, SKPaymentTransactionObserver {
var productsRequest: SKProductsRequest?
var products = [SKProduct]()
func fetchProducts() {
let productIdentifiers: Set<String> = ["com.example.virtualcurrency"]
productsRequest = SKProductsRequest(productIdentifiers: productIdentifiers)
productsRequest?.delegate = self
productsRequest?.start()
}
func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {
products = response.products
if products.isEmpty {
print("No products found")
} else {
for product in products {
print("Product: \(product.localizedTitle) - Price: \(product.price)")
}
}
}
func purchaseProduct(product: SKProduct) {
let payment = SKPayment(product: product)
SKPaymentQueue.default().add(payment)
}
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
switch transaction.transactionState {
case .purchased:
completeTransaction(transaction: transaction)
case .failed:
failedTransaction(transaction: transaction)
case .restored:
restoreTransaction(transaction: transaction)
default:
break
}
}
}
func completeTransaction(transaction: SKPaymentTransaction) {
print("Transaction completed")
SKPaymentQueue.default().finishTransaction(transaction)
}
func failedTransaction(transaction: SKPaymentTransaction) {
if let error = transaction.error as NSError? {
if error.code != SKError.paymentCancelled.rawValue {
print("Transaction failed: \(error.localizedDescription)")
}
}
SKPaymentQueue.default().finishTransaction(transaction)
}
func restoreTransaction(transaction: SKPaymentTransaction) {
print("Transaction restored")
SKPaymentQueue.default().finishTransaction(transaction)
}
}
通过以上信息,你应该能够更好地理解"IOS不可用产品"的相关概念及其解决方法。
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