在 Swift 中恢复购买

Posted 2023-02-24

【中文标题】在 Swift 中恢复购买

【英文标题】：Restore Purchase in Swift

【发布时间】：2015-04-06 14:18:58

【问题描述】：

我正在尝试向我的应用程序添加一个恢复按钮，我有一个非消耗品 inApp 购买并且购买部分工作正常。我有一个调用这两种方法的按钮：

product_id = "RemoveAdsIAP";
SKPaymentQueue.defaultQueue().addTransactionObserver(self)
SKPaymentQueue.defaultQueue().restoreCompletedTransactions()    

这是购买代码：

func buyConsumable()
    succssessIAP = false
    if (SKPaymentQueue.canMakePayments()) 
        var productID:NSSet = NSSet(object: self.product_id!);
        var productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID);
        productsRequest.delegate = self;
        productsRequest.start();
     else 
        displayErrorAlert()
    


func buyProduct(product: SKProduct)
    var payment = SKPayment(product: product)
    SKPaymentQueue.defaultQueue().addPayment(payment);


func productsRequest (request: SKProductsRequest, didReceiveResponse response: SKProductsResponse) 
    var count : Int = response.products.count
    if (count>0) 
        var validProducts = response.products
        var validProduct: SKProduct = response.products[0] as SKProduct
        if (validProduct.productIdentifier == self.product_id) 
            buyProduct(validProduct);
         else  
     else 
        displayErrorAlert()
    


func request(request: SKRequest!, didFailWithError error: NSError!) 
    activityIndicatorShop.stopAnimating()
    UIApplication.sharedApplication().endIgnoringInteractionEvents()
    displayErrorAlert()


func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!) 
    succssessIAP = false
    for transaction:AnyObject in transactions 
        if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction
            switch trans.transactionState 
            case .Purchased, .Restored:
                if (product_id == "GetNextFactIAP" && succssessIAP == false) 
                    startController.getData()
                    startController.hideContainerView()
                    succssessIAP = true
                
                if (product_id == "RemoveAdsIAP" && succssessIAP == false) 
                    NSUserDefaults.standardUserDefaults().setBool(true, forKey: "viewAdsBool")
                    NSUserDefaults.standardUserDefaults().synchronize()
                    startController.removeOnce()
                    disableAds(true)
                    succssessIAP = true
                
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
                break;
            case .Failed:
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
                activityIndicatorShop.stopAnimating()
                displayErrorAlert()
                UIApplication.sharedApplication().endIgnoringInteractionEvents()
                break;
            default:
                break;
            
        
    
    

当我按下按钮时没有任何反应，我添加了一条日志语句来检查是否调用了 updatedTransactions 方法而没有，这是什么问题？

【参考方案1】：

您没有将按钮添加为 IBAction。

阅读本文...

http://rshankar.com/different-ways-to-connect-ibaction-to-uibutton/

【参考方案2】：

试试这个代码

  import UIKit
import StoreKit
 
class ViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver

    var list = [SKProduct]()
var p = SKProduct()
    
    // 2
    func buyProduct() 
        println("buy " + p.productIdentifier)
        var pay = SKPayment(product: p)
        SKPaymentQueue.defaultQueue().addTransactionObserver(self)
        SKPaymentQueue.defaultQueue().addPayment(pay as SKPayment)
    
    
    //3
    func productsRequest(request: SKProductsRequest!, didReceiveResponse response: SKProductsResponse!) 
        println("product request")
        var myProduct = response.products
        
        for product in myProduct 
            println("product added")
            println(product.productIdentifier)
            println(product.localizedTitle)
            println(product.localizedDescription)
            println(product.price)
            
            list.append(product as SKProduct)
        
        
        outRemoveAds.enabled = true
        outAddCoins.enabled = true
    
    
    // 4
    func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue!) 
        println("transactions restored")
        
        var purchasedItemIDS = []
        for transaction in queue.transactions 
            var t: SKPaymentTransaction = transaction as SKPaymentTransaction
            
            let prodID = t.payment.productIdentifier as String
            
            switch prodID 
            case "seemu.iap.removeads":
                println("remove ads")
                removeAds()
            case "seemu.iap.addcoins":
                println("add coins to account")
                addCoins()
            default:
                println("IAP not setup")
            
            
        
    
 
    // 5
    func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!) 
        println("add paymnet")
        
        for transaction:AnyObject in transactions 
            var trans = transaction as SKPaymentTransaction
            println(trans.error)
            
            switch trans.transactionState 
                
            case .Purchased:
                println("buy, ok unlock iap here")
                println(p.productIdentifier)
                
                let prodID = p.productIdentifier as String
                switch prodID 
                    case "seemu.iap.removeads":
                        println("remove ads")
                        removeAds()
                    case "seemu.iap.addcoins":
                        println("add coins to account")
                        addCoins()
                    default:
                        println("IAP not setup")
                
                
                queue.finishTransaction(trans)
                break;
            case .Failed:
                println("buy error")
                queue.finishTransaction(trans)
                break;
            default:
                println("default")
                break;
                
            
        
    
    
    // 6
    func finishTransaction(trans:SKPaymentTransaction)
    
        println("finish trans")
    
 
    //7
    func paymentQueue(queue: SKPaymentQueue!, removedTransactions transactions: [AnyObject]!)
    
        println("remove trans");
    

【讨论】：

当用户想要恢复购买时会发生什么？