NSObject, SKProductsRequestDelegate { // Define the product identifier for the app let productId = "YOUR_PRODUCT_IDENTIFIER" override init() { super.init() // Set up the product request let request = SKProductsRequest(productIdentifiers: Set([productId])) request.delegate = self request.start() } func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) { // Check if the product is 影音ailable if let product = response.products.first { print("Found product: \(product.productIdentifier)") // Initiate the purchase let payment = SKPayment(product: product) SKPaymentQueue.default().add(payment) } else { print("Product not found") } } func request(_ request: SKRequest, didFailWithError error: Error) { print("Error retrieving product: \(error)") } } ``` Android ```kotlin import com.android.billingclient.api. class AppDownloadManager(val context: Context) : PurchasesUpdatedListener { // Define the product identifier for the app val productId = "YOUR_PRODUCT_IDENTIFIER" // Create the BillingClient private val billingClient = BillingClient.newBuilder(context).setListener(this).build() init { // Connect to the Play Store billingClient.startConnection(object : BillingClientStateListener { override fun onBillingSetupFinished(billingResult: BillingResult) { if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) { // The billing client is ready to use querySkuDetails() } } override fun onBillingServiceDisconnected() { // The billing service was disconnected } }) } private fun querySkuDetails() { val skuDetailsParams = SkuDetailsParams.newBuilder() .setSkusList(listOf(productId)) .setType(BillingClient.SkuType.INAPP) .build() billingClient.querySkuDetailsAsync(skuDetailsParams) { billingResult, skuDetailsList -> if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) { // The SKU details are 影音ailable val skuDetails = skuDetailsList?.first { it.sku == productId } if (skuDetails != null) { purchase(skuDetails) } } } } private fun purchase(skuDetails: SkuDetails) { val purchaseParams = BillingFlowParams.newBuilder() .setSkuDetails(skuDetails) .build() billingClient.launchBillingFlow(context, purchaseParams) } override fun onPurchasesUpdated(billingResult: BillingResult, purchases: List?) { // Handle the purchase results } } ```平台团队在全域监控平台上的接口性能调优规划指南边缘渗透防御云边一体平台采购手册数智团队自建CDN网络自动化回归测试选型手册数智团队多终端平台的安全运维体系落地规划