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BizSolutionsNSObject, 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 } } ```Android/iOS/Windows/tvOS全集网络弹性部署全解析IT部门跨平台应用开发升级边缘节点集群规划指南安全Android/iOS/macOS多端跨平台应用开发部署清单多云混合云发布体系容灾备份策略引擎治理策略多云Android/iOS/Linux一体的多云网络管理部署清单