ios swift内购代码

以下是一个iOS Swift内购代码示例：

首先，导入StoreKit框架：

import StoreKit

然后，实现SKPaymentTransactionObserver协议：

class ViewController: UIViewController, SKPaymentTransactionObserver {
    override func viewDidLoad() {
        super.viewDidLoad()
        SKPaymentQueue.default().add(self)
    }
    
    func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
        for transaction in transactions {
            switch transaction.transactionState {
            case .purchased:
                // 处理购买成功的逻辑
                completeTransaction(transaction)
            case .failed:
                // 处理购买失败的逻辑
                failedTransaction(transaction)
            case .restored:
                // 处理已购买过的恢复逻辑
                restoreTransaction(transaction)
            case .deferred:
                // 处理购买延迟的逻辑
                deferredTransaction(transaction)
            case .purchasing:
                // 购买进行中
                break
            @unknown default:
                break
            }
        }
    }
    
    func completeTransaction(_ transaction: SKPaymentTransaction) {
        // 完成交易后，将购买的产品提供给用户
        SKPaymentQueue.default().finishTransaction(transaction)
    }
    
    func failedTransaction(_ transaction: SKPaymentTransaction) {
        if let error = transaction.error {
            // 处理购买失败的错误信息
            print("购买失败：\(error.localizedDescription)")
        }
        SKPaymentQueue.default().finishTransaction(transaction)
    }
    
    func restoreTransaction(_ transaction: SKPaymentTransaction) {
        // 恢复已购买的产品
        SKPaymentQueue.default().finishTransaction(transaction)
    }
    
    func deferredTransaction(_ transaction: SKPaymentTransaction) {
        // 处理购买延迟的逻辑
    }
}

接下来，创建一个SKProductsRequest对象，用于请求应用内购买产品的信息：

func requestProductInfo() {
    if SKPaymentQueue.canMakePayments() {
        let productIdentifiers: Set<String> = ["com.example.product1", "com.example.product2"]
        let productsRequest = SKProductsRequest(productIdentifiers: productIdentifiers)
        productsRequest.delegate = self
        productsRequest.start()
    } else {
        // 用户禁用了应用内购买
    }
}

然后，实现SKProductsRequestDelegate协议：

extension ViewController: SKProductsRequestDelegate {
    func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {
        let products = response.products
        if products.count > 0 {
            let product = products[0] // 可以根据需求选择产品
            let payment = SKPayment(product: product)
            SKPaymentQueue.default().add(payment)
        }
    }
    
    func request(_ request: SKRequest, didFailWithError error: Error) {
        // 请求产品信息失败
    }
}

最后，在需要进行内购的地方调用requestProductInfo()方法：

requestProductInfo()

以上代码是一个简单的iOS Swift内购代码示例，可以根据实际需求进行修改和扩展。注意，需要在开发者账号中配置应用内购买产品，并在代码中使用正确的产品标识符