版本记录

版本号	时间
V1.0	2019.01.25 星期五

前言

大家都知道，iOS虚拟商品如宝石、金币等都需要走内购，和苹果三七分成，如果这类商品不走内购那么上不去架或者上架以后被发现而被下架。最近有一个项目需要增加内购支付功能，所以最近又重新集成并整理了下，希望对大家有所帮助。感兴趣的可以参考上面几篇。
1. iOS内购IAP（一） —— 基础配置篇(一)
2. iOS内购IAP（二） —— 工程实践（一）
3. iOS内购IAP（三） —— 编程指南之关于内购（一）
4. iOS内购IAP（四） —— 编程指南之设计您的应用程序的产品（一）
5. iOS内购IAP（五） —— 编程指南之检索产品信息（一）
6. iOS内购IAP（六） —— 编程指南之请求支付（一）
7. iOS内购IAP（七） —— 编程指南之促进应用内购买（一）
8. iOS内购IAP（八） —— 编程指南之提供产品（一）
9. iOS内购IAP（九） —— 编程指南之处理订阅（一）
10. iOS内购IAP（十） —— 编程指南之恢复购买的产品（一）
11. iOS内购IAP（十一） —— 编程指南之准备App审核（一）
12. iOS内购IAP（十二） —— 一个详细的内购流程（一）
13. iOS内购IAP（十三） —— 一个详细的内购流程（二）
14. iOS内购IAP（十四） —— IAP的收据验证（一）
15. iOS内购IAP（十五） —— IAP的收据验证（二）
16. iOS内购IAP（十六） —— 添加介绍性定价选项（一）

源码

1. Swift

首先看下工程组织结构

接着看一下sb中的内容

接着就是代码

1. ViewController.swift

import UIKit
import StoreKit

class ViewController: UIViewController {
  // MARK: - Instance Properties
  var quotesContent: QuotesGroup!
  var products: [SKProduct] = []
  
  // MARK: - Outlets
  @IBOutlet var quoteLbl: UILabel!
  @IBOutlet var purchaseBttn: UIButton!
  @IBOutlet var restoreBttn: UIButton!

  // MARK: - Vie Lifecycle
  override func viewDidLoad() {
    super.viewDidLoad()
    loadQuotesFromFile()
    PoohWisdomProducts.store.requestProducts { [weak self] success, products in
      guard let self = self else { return }
      guard success else {
        let alertController = UIAlertController(title: "Failed to load list of products",
                                                message: "Check logs for details",
                                                preferredStyle: .alert)
        alertController.addAction(UIAlertAction(title: "OK", style: .default))
        self.present(alertController, animated: true, completion: nil)
        return
      }
      self.products = products!
    }
    if PoohWisdomProducts.store.isProductPurchased(PoohWisdomProducts.poohWisdomSub) {
      displayRandomQuote()
    } else {
      displayPurchaseQuotes()
    }
  }
  
  func loadQuotesFromFile() {
    guard let filePath = Bundle.main.path(forResource: "poohWisdom", ofType: "json") else {
      fatalError("Quotes file path is incorrect!")
    }
    do {
      let data = try Data(contentsOf: URL(fileURLWithPath: filePath))
      quotesContent = try JSONDecoder().decode(QuotesGroup.self, from: data)
    } catch {
      fatalError(error.localizedDescription)
    }
  }

  // MARK: - IBActions
  @IBAction func purchaseSubscription(_ sender: Any) {
    guard !products.isEmpty else {
      print("Cannot purchase subscription because products is empty!")
      return
    }
    PoohWisdomProducts.store.buyProduct(products[0]) { [weak self] success, productOd in
      guard let self = self else { return }
      guard success else {
        let alertController = UIAlertController(title: "Failed to purchase product",
                                                message: "Check logs for details",
                                                preferredStyle: .alert)
        alertController.addAction(UIAlertAction(title: "OK", style: .default))
        self.present(alertController, animated: true, completion: nil)
        return
      }
      self.displayRandomQuote()
    }
  }

  @IBAction func restorePurchases(_ sender: Any) {
    PoohWisdomProducts.store.restorePurchases()
  }

  // MARK: - Displaying Quotes
  private func displayPurchaseQuotes() {
    quoteLbl.text = "Wanna get random words of wisdom from Winnie the Pooh?\n\n" +
                    "Press the 'Purchase' button!\nWhat are you waiting for?!"
  }
  
  private func displayRandomQuote() {
    let randNum = Int.random(in: 0 ..< quotesContent.quotes.count)
    quoteLbl.text = quotesContent.quotes[randNum]
    purchaseBttn.isHidden = true
    restoreBttn.isHidden = true
  }
}

2. IAPManager.swift

import StoreKit

public typealias ProductID = String
public typealias ProductsRequestCompletionHandler = (_ success: Bool, _ products: [SKProduct]?) -> Void
public typealias ProductPurchaseCompletionHandler = (_ success: Bool, _ productId: ProductID?) -> Void

// MARK: - IAPManager
public class IAPManager: NSObject  {
  private let productIDs: Set<ProductID>
  private var purchasedProductIDs: Set<ProductID>
  private var productsRequest: SKProductsRequest?
  private var productsRequestCompletionHandler: ProductsRequestCompletionHandler?
  private var productPurchaseCompletionHandler: ProductPurchaseCompletionHandler?
  
  public init(productIDs: Set<ProductID>) {
    self.productIDs = productIDs
    self.purchasedProductIDs = productIDs.filter { productID in
      let purchased = UserDefaults.standard.bool(forKey: productID)
      if purchased {
        print("Previously purchased: \(productID)")
      } else {
        print("Not purchased: \(productID)")
      }
      return purchased
    }
    super.init()
    SKPaymentQueue.default().add(self)
  }
}

// MARK: - StoreKit API
extension IAPManager {
  public func requestProducts(_ completionHandler: @escaping ProductsRequestCompletionHandler) {
    productsRequest?.cancel()
    productsRequestCompletionHandler = completionHandler

    productsRequest = SKProductsRequest(productIdentifiers: productIDs)
    productsRequest!.delegate = self
    productsRequest!.start()
  }

  public func buyProduct(_ product: SKProduct, _ completionHandler: @escaping ProductPurchaseCompletionHandler) {
    productPurchaseCompletionHandler = completionHandler
    print("Buying \(product.productIdentifier)...")
    let payment = SKPayment(product: product)
    SKPaymentQueue.default().add(payment)
  }

  public func isProductPurchased(_ productID: ProductID) -> Bool {
    return purchasedProductIDs.contains(productID)
  }
  
  public class func canMakePayments() -> Bool {
    return SKPaymentQueue.canMakePayments()
  }
  
  public func restorePurchases() {
    SKPaymentQueue.default().restoreCompletedTransactions()
  }
}

// MARK: - SKProductsRequestDelegate
extension IAPManager: SKProductsRequestDelegate {
  public func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {
    print("Loaded list of products...")
    let products = response.products
    guard !products.isEmpty else {
      print("Product list is empty...!")
      print("Did you configure the project and set up the IAP?")
      productsRequestCompletionHandler?(false, nil)
      return
    }
    productsRequestCompletionHandler?(true, products)
    clearRequestAndHandler()
    for p in products {
      print("Found product: \(p.productIdentifier) \(p.localizedTitle) \(p.price.floatValue)")
    }
  }

  public func request(_ request: SKRequest, didFailWithError error: Error) {
    print("Failed to load list of products.")
    print("Error: \(error.localizedDescription)")
    productsRequestCompletionHandler?(false, nil)
    clearRequestAndHandler()
  }

  private func clearRequestAndHandler() {
    productsRequest = nil
    productsRequestCompletionHandler = nil
  }
}

// MARK: - SKPaymentTransactionObserver
extension IAPManager: SKPaymentTransactionObserver {
  public func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
    for transaction in transactions {
      switch (transaction.transactionState) {
      case .purchased:
        complete(transaction: transaction)
        break
      case .failed:
        fail(transaction: transaction)
        break
      case .restored:
        restore(transaction: transaction)
        break
      case .deferred:
        break
      case .purchasing:
        break
      }
    }
  }

  private func complete(transaction: SKPaymentTransaction) {
    print("complete...")
    productPurchaseCompleted(identifier: transaction.payment.productIdentifier)
    SKPaymentQueue.default().finishTransaction(transaction)
  }

  private func restore(transaction: SKPaymentTransaction) {
    guard let productIdentifier = transaction.original?.payment.productIdentifier else { return }
    print("restore... \(productIdentifier)")
    productPurchaseCompleted(identifier: productIdentifier)
    SKPaymentQueue.default().finishTransaction(transaction)
  }

  private func fail(transaction: SKPaymentTransaction) {
    print("fail...")
    if let transactionError = transaction.error as NSError?,
      let localizedDescription = transaction.error?.localizedDescription,
        transactionError.code != SKError.paymentCancelled.rawValue {
        print("Transaction Error: \(localizedDescription)")
      }

    productPurchaseCompletionHandler?(false, nil)
    SKPaymentQueue.default().finishTransaction(transaction)
    clearHandler()
  }

  private func productPurchaseCompleted(identifier: ProductID?) {
    guard let identifier = identifier else { return }

    purchasedProductIDs.insert(identifier)
    UserDefaults.standard.set(true, forKey: identifier)
    productPurchaseCompletionHandler?(true, identifier)
    clearHandler()
  }

  private func clearHandler() {
    productPurchaseCompletionHandler = nil
  }
}

3. PoohWisdomProducts.swift

import Foundation

public struct PoohWisdomProducts {
  public static let poohWisdomSub = "com.razeware.poohWisdom.monthlySub"
  public static let store = IAPManager(productIDs: PoohWisdomProducts.productIDs)
  private static let productIDs: Set<ProductID> = [PoohWisdomProducts.poohWisdomSub]
}

public func resourceNameForProductIdentifier(_ productIdentifier: String) -> String? {
  return productIdentifier.components(separatedBy: ".").last
}

4. QuotesGroup.swift

public struct QuotesGroup: Decodable {
  public let quotes: [String]
}

后记

本篇主要讲述了添加介绍性定价选项，感兴趣的给个赞或者关注~~~

iOS内购IAP（十七） —— 添加介绍性定价选项（二）

版本记录

前言

源码

1. Swift

后记

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