終止應用程序由於未捕獲的異常「NSInvalidArgumentException」，理由是：「無效的產品標識：（null）的

Question

我想在應用內購買添加到我的Xcode應用程序，而我得到這個錯誤：

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Invalid product identifier: (null)' * First throw call stack: (0x184bf82d8 0x19641c0e4 0x184bf8218 0x189597210 0x100066fa8 0x100067018 0x18966d404 0x1896564e0 0x18966cda0 0x18966ca2c 0x189665f68 0x18963918c 0x1898da324 0x1896376a0 0x184bb0240 0x184baf4e4 0x184bad594 0x184ad92d4 0x18e2ef6fc 0x18969efac 0x100069600 0x196a9aa08) libc++abi.dylib: terminating with uncaught exception of type NSException

我曾嘗試使用IOS模擬器和使用我的iPhone設備來運行我的應用程序。

完全ViewController.swift代碼：

import UIKit 
import StoreKit 

class ViewController: UIViewController, SKPaymentTransactionObserver, SKProductsRequestDelegate{ 

    var product:SKProduct! 

    @IBOutlet weak var lastmanstandingButton: UIButton! 
    @IBOutlet weak var upgradeProButton: UIButton! 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 
     lastmanstandingButton.enabled = false 
     SKPaymentQueue.defaultQueue().addTransactionObserver(self) 
    } 

     override func didReceiveMemoryWarning() { 
      super.didReceiveMemoryWarning() 
      // Dispose of any resources that can be recreated. 
    } 

    func productsRequest(request: SKProductsRequest!, didReceiveResponse response: SKProductsResponse!) { 
     let products = response.products 
     if (products.count != 0) 
     { 
      product = products[0] as! SKProduct; 
      //productInfo.text = product.localizedTitle + "\n" + product.localizedDescription 
     } 
    } 

    func getProductInfo(){ 
     if (SKPaymentQueue.canMakePayments()){ 
      let productID:NSSet = NSSet(object:"com.mi.yaya.inapp1"); 
      let request:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as Set<NSObject>) 
      request.delegate = self; 
      request.start() 
     } 
    } 

    @IBAction func upgradeProButtonAction(sender: AnyObject) { 
     let payment:SKPayment = SKPayment(product: product); 
     SKPaymentQueue.defaultQueue().addPayment(payment) 
    } 

    func unlockProFeatures(){ 
     lastmanstandingButton.enabled = true 
    } 

    func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!) { 
     for transaction:AnyObject in transactions { 
      if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction{ 
       switch trans.transactionState { 
       case .Purchased: 
        self.unlockProFeatures(); 
        SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction) 
        break 
       case .Failed: 
        SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction) 
        break 
       case .Restored: 
        SKPaymentQueue.defaultQueue().restoreCompletedTransactions() 
        break 
       default: 
        break 
       } 
      } 
     } 
    } 
} 

教程使用IAP：https://www.youtube.com/watch?v=hnRO87_2GpQ

編輯：在iTunes Connect中我已經加入我創建的應用程序的應用內購買。它說：狀態：準備提交

Answer 1

看來您並未正確設置產品標識。檢查您正在撥打getProductInfo的位置，並且ID是否正確設置。同時檢查您的方法調用的順序，並確保您在正確的時刻發送ID。

我想指出，你可能想提高一些行：

• 您應該設置product作爲一個可選的，因爲如果你的請求不返回一個值，你的應用程序會崩潰
• productsRequest是不是一個好的方法名稱。相反，你可以使用requestProducts

Answer 2

我回答我的問題，因爲我發現使用另一個代碼的解決方案：

import UIKit 
import StoreKit 

class ViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver { 

    var product_id: NSString?; 

    @IBOutlet weak var lastmanstandingButton: UIButton! 
    @IBOutlet weak var upgradeProButton: UIButton! 

    override func viewDidLoad() { 
     product_id = "com.mi.yaya.inapp1"; 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 
     lastmanstandingButton.enabled = false 
     SKPaymentQueue.defaultQueue().addTransactionObserver(self) 
    } 

     override func didReceiveMemoryWarning() { 
      super.didReceiveMemoryWarning() 
      // Dispose of any resources that can be recreated. 
    } 

    @IBAction func upgradeProButtonAction(sender: AnyObject) { 
     buyConsumable() 
    } 

    func buyConsumable(){ 
     println("About to fetch the products"); 
     // We check that we are allow to make the purchase. 
     if (SKPaymentQueue.canMakePayments()) 
     { 
      var productID:NSSet = NSSet(object: self.product_id!); 
      var productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as Set<NSObject>); 
      productsRequest.delegate = self; 
      productsRequest.start(); 
      println("Fething Products"); 
     }else{ 
      println("can't make purchases"); 
     } 
    } 

    // Helper Methods 

    func buyProduct(product: SKProduct){ 
     println("Sending the Payment Request to Apple"); 
     var payment = SKPayment(product: product) 
     SKPaymentQueue.defaultQueue().addPayment(payment); 

    } 


    // Delegate Methods for IAP 

    func productsRequest (request: SKProductsRequest, didReceiveResponse response: SKProductsResponse) { 
     println("got the request from Apple") 
     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) { 
       println(validProduct.localizedTitle) 
       println(validProduct.localizedDescription) 
       println(validProduct.price) 
       buyProduct(validProduct); 
      } else { 
       println(validProduct.productIdentifier) 
      } 
     } else { 
      println("nothing") 
     } 
    } 


    func request(request: SKRequest!, didFailWithError error: NSError!) { 
     println("La vaina fallo"); 
    } 

    func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!) { 
     println("Received Payment Transaction Response from Apple"); 

     for transaction:AnyObject in transactions { 
      if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction{ 
       switch trans.transactionState { 
       case .Purchased: 
        println("Product Purchased"); 
        SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction) 
        break; 
       case .Failed: 
        println("Purchased Failed"); 
        SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction) 
        break; 
        // case .Restored: 
        //[self restoreTransaction:transaction]; 
       default: 
        break; 
       } 
      } 
     } 

    } 

} 

資料來源：https://github.com/ivanacostarubio/swift-in-app-purchase-example

我的設備上進行測試，給我輸出：

About to fetch the products 
Fething Products 
got the request from Apple 
Upgrade PRO 
Oppgradere til PRO å få alle funksjoner, fjerne annonser og få fremtidige betalingsoppdateringer gratis. 
19 
Sending the Payment Request to Apple 
Received Payment Transaction Response from Apple 
Received Payment Transaction Response from Apple 
Product Purchased