Покупка в приложении в Swift с помощью одного продукта

Ответ 1

Шаг 0: В своей учетной записи iTunes Connect создайте покупку In-App.

Для отдельных покупок используйте этот метод:

• Импорт

import StoreKit

2. Соответствует делегату StoreKit

class YOURViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver {

3. Использовать по умолчанию для отслеживания транзакций по умолчанию.

let defaults = NSUserDefaults.standardUserDefaults()

4. Идентификатор продукта. Он будет таким же, как и в iTunes Connect при покупке приложения.

var product_id: NSString?

override func viewDidLoad() {        
    product_id = "YOUR_PRODUCT_ID"
    super.viewDidLoad()
    SKPaymentQueue.defaultQueue().addTransactionObserver(self)

    //Check if product is purchased

    if (defaults.boolForKey("purchased")){  
       // Hide a view or show content depends on your requirement
       overlayView.hidden = true     
    } else if (!defaults.boolForKey("stonerPurchased")) {
        print("false")            
    }
}

5. Разблокировать содержимое. Это действие кнопки, которое инициализирует покупку

@IBAction func unlockAction(sender: AnyObject) {

   print("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);
        productsRequest.delegate = self;
        productsRequest.start();
        println("Fetching Products");
    } else {
        print("can't make purchases");
    }    
}

6. Вспомогательные методы

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

7. Методы делегата для IAP

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) {
            print(validProduct.localizedTitle)
            print(validProduct.localizedDescription)
            print(validProduct.price)
            buyProduct(validProduct);
        } else {
            print(validProduct.productIdentifier)
        }
    } else {
        print("nothing")
    }
}    

func request(request: SKRequest!, didFailWithError error: NSError!) {
    print("Error Fetching product information");
}

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

    for transaction:AnyObject in transactions {
        if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction{
            switch trans.transactionState {
            case .Purchased:
                print("Product Purchased");
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
                defaults.setBool(true , forKey: "purchased")
                overlayView.hidden = true
                break;
            case .Failed:
                print("Purchased Failed");
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
                break;
            case .Restored:
                print("Already Purchased");
                SKPaymentQueue.defaultQueue().restoreCompletedTransactions()    
            default:
                break;
            }
        }
    }        
}

Swift > 3.0

import StoreKit
class YOURVIEWController:UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver {

let product_id: NSString = "com.some.inappid" // <!-- Change it to your inapp id

В viewDidLoad добавить

override func viewDidLoad() {
    super.viewDidLoad()
    SKPaymentQueue.default().add(self)

В действии кнопки покупки

@IBAction func buyNowAction(_ sender: UIButton) {


    if (SKPaymentQueue.canMakePayments()) {
        let productID:NSSet = NSSet(array: [self.product_id as NSString]);
        let productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>);
        productsRequest.delegate = self;
        productsRequest.start();
        print("Fetching Products");
    } else {
        print("can't make purchases");
    }
}

В действии кнопки "Восстановить"

// MARK: - Restore In App Purchase
    @IBAction func restoreAction(_ sender: UIButton) {

    if (SKPaymentQueue.canMakePayments()) {
        SKPaymentQueue.default().add(self)
        SKPaymentQueue.default().restoreCompletedTransactions()
    } else {
        // show error
    }

}

Добавить делегатов:

// SKProductRequest Delegate

func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {

    print(response.products)
    let count : Int = response.products.count
    if (count>0) {

        let validProduct: SKProduct = response.products[0] as SKProduct
        if (validProduct.productIdentifier == self.product_id as String) {
            print(validProduct.localizedTitle)
            print(validProduct.localizedDescription)
            print(validProduct.price)
            self.buyProduct(product: validProduct)
        } else {
            print(validProduct.productIdentifier)
        }
    } else {
        print("nothing")
    }
}

func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
    for transaction:AnyObject in transactions {
        if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction{

            self.dismissPurchaseBtn.isEnabled = true
            self.restorePurchaseBtn.isEnabled = true
            self.buyNowBtn.isEnabled = true

            switch trans.transactionState {
            case .purchased:
                print("Product Purchased")
                //Do unlocking etc stuff here in case of new purchase
                SKPaymentQueue.default().finishTransaction(transaction as! SKPaymentTransaction)

                break;
            case .failed:
                print("Purchased Failed");
                SKPaymentQueue.default().finishTransaction(transaction as! SKPaymentTransaction)
                break;
            case .restored:
                print("Already Purchased")
                //Do unlocking etc stuff here in case of restor

                SKPaymentQueue.default().finishTransaction(transaction as! SKPaymentTransaction)
            default:
                break;
            }
        }
    }
}


//If an error occurs, the code will go to this function
    func paymentQueue(_ queue: SKPaymentQueue, restoreCompletedTransactionsFailedWithError error: Error) {
        // Show some alert
    }

Ответ 2

В приложении Приобретение делегата Метод:

func buyInApp()
{
    if (SKPaymentQueue.canMakePayments())
    {
        let productID:NSSet = NSSet(object: "com.valueedge.plane_post");
        let productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>);
        productsRequest.delegate = self;
        productsRequest.start();
    }
    else
    {
        MBProgressHUD.hideHUDForView(self.view, animated: true)
    }
}

func productsRequest (request: SKProductsRequest, didReceiveResponse response: SKProductsResponse)
{
    let count : Int = response.products.count
    if (count>0)
    {
        let validProduct: SKProduct = response.products[0] as SKProduct

        if (validProduct.productIdentifier == "com.valueedge.plane_post")
        {
            buyProduct(validProduct);
        }
        else
        {
            MBProgressHUD.hideHUDForView(self.view, animated: true)
        }
    }
    else
    {
        MBProgressHUD.hideHUDForView(self.view, animated: true)
    }
}

func buyProduct(product: SKProduct)
{
    let payment = SKPayment(product: product)
    SKPaymentQueue.defaultQueue().addPayment(payment)
    SKPaymentQueue.defaultQueue().addTransactionObserver(self)
}

func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction])
{
    for transaction:AnyObject in transactions
    {
        if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction
        {
            switch trans.transactionState
            {
            case .Purchased:
                self.PaymentSuccess("Apple", details: "Apple(In-App)")
                print("In App Payment Success")
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction)
                MBProgressHUD.hideHUDForView(self.view, animated: true)
                break
            case .Failed:
                MBProgressHUD.hideHUDForView(self.view, animated: true)
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction)

                let alert = UIAlertController(title: "Planes Only", message: "Payment failed", preferredStyle: .Alert)
                alert.addAction(UIAlertAction(title: "OK", style: .Default, handler: {(action:UIAlertAction!) in
                }))
                self.presentViewController(alert, animated: true, completion: nil)

                break
            case .Restored :
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction)
                MBProgressHUD.hideHUDForView(self.view, animated: true)
                break
            default:
                MBProgressHUD.hideHUDForView(self.view, animated: true)
                break
            }
        }
    }
}

func restore()
{
    SKPaymentQueue.defaultQueue().addTransactionObserver(self)
    SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
    MBProgressHUD.showHUDAddedTo(self.view, animated: true)
}

func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue)
{
    for transact:SKPaymentTransaction in queue.transactions
    {
        if transact.transactionState == SKPaymentTransactionState.Restored
        {
            //let t: SKPaymentTransaction = transact as SKPaymentTransaction
            //let prodID = t.payment.productIdentifier as String
            //restore prodID
            SKPaymentQueue .defaultQueue().finishTransaction(transact)
            MBProgressHUD.hideHUDForView(self.view, animated: true)
        }
    }
}

func paymentQueue(queue: SKPaymentQueue, restoreCompletedTransactionsFailedWithError error: NSError)
{
    for transaction:SKPaymentTransaction  in queue.transactions
    {
        if transaction.transactionState == SKPaymentTransactionState.Restored
        {
            SKPaymentQueue.defaultQueue().finishTransaction(transaction)
            MBProgressHUD.hideHUDForView(self.view, animated: true)
            break
        }
    }
    MBProgressHUD.hideHUDForView(self.view, animated: true)
}

func request(request: SKRequest, didFailWithError error: NSError)
{
    MBProgressHUD.hideHUDForView(self.view, animated: true)
}

В окне приложения Нажатое событие:

@IBAction func In_App_Payment_Clicked(sender: AnyObject)
{
    MBProgressHUD.showHUDAddedTo(self.view, animated: true)
    self.buyInApp()
}