iOS项目内购(IAP）纯代码

//
//  AppPayManager.swift
//  testInpuarse
//
//  Created by n 2022/3/21.
//import UIKit
import StoreKitclass AppPayManager: NSObject {var proId:String!//沙盒验证地址let url_receipt_sandbox = "https://sandbox.itunes.apple.com/verifyReceipt"//生产环境验证地址let url_receipt_itunes = "https://buy.itunes.apple.com/verifyReceipt"//21008表示生产换使用  21007表示测试环境使用var state = 21008let verify_type = 0var resultBlock:(_ result:String)->Void = { (_ result:String)->Void in}static var shared: AppPayManager = AppPayManager()private override init() {}override class func copy() -> Any {return self}}extension AppPayManager: SKPaymentTransactionObserver {//MARK:发起购买请求 实现发起购买请求，参数一商品id，参数2回调逃逸闭包(商品id，也就是在开发者网站添加商品的id，在这里可以先提供一个com.saixin.eduline6)func startPay(proId:String,resultBlock:@escaping ((_ result:String)->Void))  {self.resultBlock = resultBlockif !SKPaymentQueue.canMakePayments() {print("不可使用苹果支付")return}//监听购买结果SKPaymentQueue.default().add(self)self.proId = proIdlet set = Set.init([proId])let requst = SKProductsRequest.init(productIdentifiers: set)requst.delegate = selfrequst.start()}}extension AppPayManager: SKProductsRequestDelegate {//MARK:发起购买请求回调代理方法func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {let productArray = response.productsif productArray.count == 0 {print("此商品id没有对应的商品")return}var product:SKProduct!for pro in productArray {if pro.productIdentifier == proId {product = probreak}}print(product.description)print(product.localizedTitle)print(product.localizedDescription)print(product.price)print(product.productIdentifier)let payment = SKMutablePayment.init(product: product)payment.quantity = 1SKPaymentQueue.default().add(payment)}//MARK:购买结果 监听回调func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {for tran in transactions {switch tran.transactionState {case .purchased://购买完成SKPaymentQueue.default().finishTransaction(tran)completePay(transaction: tran)breakcase.purchasing://商品添加进列表breakcase.restored://已经购买过该商品SKPaymentQueue.default().finishTransaction(tran)breakcase.failed://购买失败SKPaymentQueue.default().finishTransaction(tran)breakdefault:break}}}//MARK:购买成功验证凭证func completePay(transaction:SKPaymentTransaction) {//获取交易凭证let recepitUrl = Bundle.main.appStoreReceiptURLlet data = try! Data.init(contentsOf: recepitUrl!)if recepitUrl == nil {self.resultBlock("交易凭证为空")print("交易凭证为空")return}if verify_type == 0 {//客户端验证verify(data: data,transaction: transaction)}else{//服务器端校验}//注销交易SKPaymentQueue.default().finishTransaction(transaction)}//MARK:客户端验证func verify(data:Data,transaction:SKPaymentTransaction)  {let base64Str = data.base64EncodedString(options: .endLineWithLineFeed)let params = NSMutableDictionary()params["receipt-data"] = base64Strlet body = try! JSONSerialization.data(withJSONObject: params, options: .prettyPrinted)var request = URLRequest.init(url: URL.init(string: state == 21008 ? url_receipt_itunes : url_receipt_sandbox)!, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 20)request.httpMethod = "POST"request.httpBody = bodylet session = URLSession.sharedlet task = session.dataTask(with: request) { (data, response, error) inlet dict = try! JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as! NSDictionaryprint(dict)SKPaymentQueue.default().finishTransaction(transaction)let status = dict["status"] as! Intswitch(status){case 0:self.resultBlock("购买成功")breakcase 21007:self.state = 21007self.verify(data: data!, transaction: transaction)breakdefault:self.resultBlock("验证失败")break}//移除监听SKPaymentQueue.default().remove(self)}task.resume()}}

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