问题
i am trying to implement a single in-app purchase in my app to remove ads, from the iTunes Connect side is very easy but for the code part i find only tutorials with tableview and/or older version of swift or objC
I added the in-app purchase in iTunes Connect under the new version of the app,in the app i added a view with 2 buttons, one to purchase and the other to restore previous purchases, but i don't know the code, for now the inapp section of my viewcontroller is
import StoreKit
var productIDs: Array<String!> = []
var productsArray: Array<SKProduct!> = []
class ViewController: UIViewController, SKProductsRequestDelegate {
Is this ok?Do i need the arrays if I have only one in-app purchase?
I also added the in app purchase in the capabilities section but i have the red exclamation mark next to the label "add in app purchase entitlement to your app id",but i saw the same thing for the game center section and the leaderboards and achievements works so I think that i don't have to worry about it
Regarding the removal of the add, which is the best way?
I use admob and I was thinking to add an if statement in the Appdelegate and put the create and load interstital section inside it In the code there is some variable set to true if the user made that purchase or I have to check it every time the user open the app?
Thank you in advance for your answers
回答1:
The following works in Swift 2.
First, In Itunes Connect make an IAP
Import Storekit
import StoreKit
Add the StoreKit Delegates
class ViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver {
Declare your product id
var product_id: NSString?
override func viewDidLoad() {
product_id = "YOUR_PRODUCT_ID"
super.viewDidLoad()
SKPaymentQueue.defaultQueue().addTransactionObserver(self)
//Check if product is purchased
if (NSUserDefaults.standardUserDefaults().boolForKey("purchased")){
// Hide ads
adView.hidden = true
} else {
print("Should show ads...")
}
}
Unlock Content: This is button action which will initialize purchase
@IBAction func unlockAction(sender: AnyObject) {
print("About to fetch the product...")
// Can make payments
if (SKPaymentQueue.canMakePayments())
{
let productID:NSSet = NSSet(object: self.product_id!);
let productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID);
productsRequest.delegate = self;
productsRequest.start();
println("Fetching Products");
}else{
print("Can't make purchases");
}
}
Helper Methods
func buyProduct(product: SKProduct){
println("Sending the Payment Request to Apple");
let payment = SKPayment(product: product)
SKPaymentQueue.defaultQueue().addPayment(payment);
}
Delegate Methods for IAP
func productsRequest (request: SKProductsRequest, didReceiveResponse response: SKProductsResponse) {
let count : Int = response.products.count
if (count>0) {
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: [SKPaymentTransaction])
{
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)
// Handle the purchase
NSUserDefaults.standardUserDefaults().setBool(true , forKey: "purchased")
adView.hidden = true
break;
case .Failed:
print("Purchased Failed");
SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
break;
case .Restored:
print("Already Purchased");
SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
// Handle the purchase
NSUserDefaults.standardUserDefaults().setBool(true , forKey: "purchased")
adView.hidden = true
break;
default:
break;
}
}
}
}
Restore Purchases
Add this to a function:
if (SKPaymentQueue.canMakePayments()) {
SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
}
回答2:
WMios answer in Swift 3.
First, In Itunes Connect make an IAP
Import Storekit
import StoreKit
Add the StoreKit Delegates
class ViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver {
Declare your product id
var product_id: String?
override func viewDidLoad() {
super.viewDidLoad()
product_id = "YOUR_PRODUCT_ID"
SKPaymentQueue.default().add(self)
//Check if product is purchased
if (UserDefaults.standard.bool(forKey: "purchased")){
// Hide ads
//adView.hidden = true
} else {
print("Should show ads...")
}
}
Unlock Content: This is button action which will initialize purchase
@IBAction func unlockAction(sender: AnyObject) {
print("About to fetch the product...")
// Can make payments
if (SKPaymentQueue.canMakePayments())
{
let productID:NSSet = NSSet(object: self.product_id!);
let productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>);
productsRequest.delegate = self;
productsRequest.start();
print("Fetching Products");
}else{
print("Can't make purchases");
}
}
Helper Methods
func buyProduct(product: SKProduct){
print("Sending the Payment Request to Apple");
let payment = SKPayment(product: product)
SKPaymentQueue.default().add(payment);
}
Delegate Methods for IAP
func productsRequest (_ request: SKProductsRequest, didReceive response: SKProductsResponse) {
let count : Int = response.products.count
if (count>0) {
let validProduct: SKProduct = response.products[0] as SKProduct
if (validProduct.productIdentifier == self.product_id) {
print(validProduct.localizedTitle)
print(validProduct.localizedDescription)
print(validProduct.price)
buyProduct(product: validProduct);
} else {
print(validProduct.productIdentifier)
}
} else {
print("nothing")
}
}
func request(_ request: SKRequest, didFailWithError error: Error) {
print("Error Fetching product information");
}
func paymentQueue(_ queue: SKPaymentQueue,
updatedTransactions transactions: [SKPaymentTransaction])
{
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.default().finishTransaction(transaction as! SKPaymentTransaction)
// Handle the purchase
UserDefaults.standard.set(true , forKey: "purchased")
//adView.hidden = true
break;
case .failed:
print("Purchased Failed");
SKPaymentQueue.default().finishTransaction(transaction as! SKPaymentTransaction)
break;
case .restored:
print("Already Purchased");
SKPaymentQueue.default().restoreCompletedTransactions()
// Handle the purchase
UserDefaults.standard.set(true , forKey: "purchased")
//adView.hidden = true
break;
default:
break;
}
}
}
}
Restore Purchases
Add this to a function:
if (SKPaymentQueue.canMakePayments()) {
SKPaymentQueue.default().restoreCompletedTransactions()
}
来源：https://stackoverflow.com/questions/38432465/swift-ios-9-implement-an-in-app-purchase-in-the-simplest-way-possible