iPhone：应用程序内购买必须与新的应用程序版本一起提交

iPhone：应用程序内购买必须与新的应用程序版本一起提交

// 导入StoreKit框架
import StoreKit
// 遵循SKPaymentTransactionObserver协议，监听购买状态
class MyPurchaseManager: NSObject, SKPaymentTransactionObserver {
    
    // 通过苹果服务器验证购买凭证
    func verifyPurchase(with receipt: Data) {
        // 实现验证购买凭证的逻辑
    }
    
    // 处理购买结果
    func handlePurchaseResult(_ transaction: SKPaymentTransaction) {
        switch transaction.transactionState {
        case .purchased:
            // 购买成功
            let receipt = transaction.transactionReceipt
            verifyPurchase(with: receipt)
        case .restored:
            // 已经购买过该商品，恢复购买成功
            let receipt = transaction.original?.transactionReceipt
            verifyPurchase(with: receipt)
        case .failed:
            // 购买失败
            let error = transaction.error
            // 处理购买失败的逻辑
        default:
            break
        }
    }
    
    // 监听购买状态变化
    func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
        for transaction in transactions {
            handlePurchaseResult(transaction)
        }
    }
    
    // 用户点击购买按钮时调用
    func purchaseProduct(_ product: SKProduct) {
        let payment = SKPayment(product: product)
        SKPaymentQueue.default().add(payment)
    }
}