HarmonyOS 应用开发：IAP Kit 在美颜相机中的商业化实现

开发场景需求在"拍摄美颜相机"应用中，IAP Kit 实现：订阅制服务：按月解锁高级滤镜一次性购买：永久获取专属特效促销活动：限时折扣和礼包组合

// 核心实现与代码示例// 商品配置管理// 商品信息初始化：typescript

import iap from '@ohos.iap';

// 定义应用内商品const products = {premium_monthly: {type: iap.ProductType.SUBSCRIPTION,id: 'premium_v1_month',price: '¥15/月'},eternal_pack: {type: iap.ProductType.CONSUMABLE,id: 'eternal_pack_2024',price: '¥128'}};

// 从华为服务器获取最新商品信息async function refreshProducts() {const validProducts = await iap.queryProducts(Object.values(products).map(p => p.id));

validProducts.forEach(product => {products[product.id].price = product.localizedPrice;products[product.id].status = product.status;});}// 本地商品缓存：typescript

// 使用持久化存储缓存商品数据storage.upsert('iap_products', products, {ttl: 3600 // 1小时有效});// 购买流程实现// 订阅功能集成：typescript

async function purchaseSubscription() {try {const order = await iap.purchase(products.premium_monthly.id, {developerPayload: user_${this.userId} // 防重复校验});

if (order.paymentState === iap.PaymentState.COMPLETED) {  this.activatePremiumFeatures();  await verifyPurchase(order);}

} catch (err) {console.error(订阅失败: ${err.code});}}

// 购买状态验证async function verifyPurchase(order) {const receipt = await iap.verifyPayment(order.purchaseToken,order.productId);

if (receipt.valid) {this.recordPurchase(receipt);}}// 消耗型商品处理：typescript

Button('购买永恒礼包').onClick(async () => {const result = await iap.buyProduct(products.eternal_pack.id);if (result.success) {this.unlockEternalPack();iap.consumeProduct(result.purchaseToken); // 标记为已消耗}});// 订阅状态管理// 自动续订监听：typescript

// 订阅状态变化监听iap.on('subscriptionUpdate', (update) => {switch(update.state) {case 'active':this.maintainPremiumAccess();break;case 'expired':this.downgradeToFree();break;}});

// 恢复购买按钮Button('恢复购买').onClick(async () => {const purchases = await iap.getPurchases();if (purchases.some(p => p.productId === 'premium_v1_month')) {this.activatePremiumFeatures();}});

// 关键优化策略// 防欺诈设计typescript

// 启用高级验证iap.setSecurityConfig({signatureVerification: true,antiFraudLevel: 'high'});

// 可疑订单处理iap.on('riskyPurchase', (order) => {this.flagForReview(order);});// 本地收据缓存typescript

// 离线购买验证async function handleOfflinePurchase() {const cachedReceipts = storage.get('pending_receipts') || [];await Promise.all(cachedReceipts.map(async receipt => {if (navigator.onLine) {const valid = await iap.verifyPayment(receipt);if (valid) this.fulfillPurchase(receipt);}}));}// 促销活动支持typescript

// 检查促销资格async function checkPromoEligibility() {const promotions = await iap.getPromotions();this.displayPromoBanners(promotions.filter(p => p.applicable));}

// 兑换促销码async function redeemOffer(code) {const result = await iap.redeemPromoCode(code);if (result.success) {this.showSuccess('专属滤镜已解锁！');}}

// 沙箱测试配置typescript

// 开发环境模拟支付if (process.env.NODE_ENV === 'development') {iap.enableSandbox({testCards: {valid: '华为测试卡号',invalid: '模拟失败卡号'}});}// 多货币处理typescript

// 显示本地化价格function formatPrice(product) {return product.localizedPrice ??${product.currency} ${product.price};}// 退款处理typescript

// 监听退款事件iap.on('refund', (order) => {this.revokeFeatures(order.productId);this.sendRefundEmail(order);});