CODEWITHSUNDEEP
iosin-app-purchase
fabdurso
fabdurso

Reputation: 2444

In App Purchase: SKPaymentTransactionStatePurchased

I just added one in-app purchase to my app. When a user click on the "purchase" button and the transaction ends, the "purchase" button is replaced by another button to access to the new features. But everytime I come back to that page or I close and open again the app, there is again the "purchase" button. How can I do to have always the new button if the user has purchased the new contents? Here is my code:

-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {

    for (SKPaymentTransaction *transaction in transactions) {

          switch (transaction.transactionState) {

               case SKPaymentTransactionStatePurchasing:

                    break;

               case SKPaymentTransactionStatePurchased:

               [[SKPaymentQueue defaultQueue] finishTransaction:transaction];

                           UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

                              [button addTarget:self 

                               action:@selector(myaction)

                               forControlEvents:UIControlEventTouchUpInside];

                    [button setTitle:@"mytitle" forState:UIControlStateNormal];



                    button.frame = CGRectMake(156.0, 248.0, 129.0, 36.0);

                    [self.view addSubview:button];

                    break;

               case SKPaymentTransactionStateRestored:

                    [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                         break;

               case SKPaymentTransactionStateFailed:

                    if (transaction.error.code != SKErrorPaymentCancelled) {

                         NSLog(@"Errorr");

                    }

                    [[SKPaymentQueue defaultQueue] finishTransaction:transaction];


          }

     }

}

Upvotes: 0

Views: 1401

Answers (3)

Nekto
Nekto

Reputation: 17877

You should save somewhere information about the fact that user has purchased the content.

There are a lot of ways to do that. For example, you could use NSUserDefaults:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
int version = [defaults integerForKey:@"db_version"];                 // <- read int value from defaults
[defaults setValue:[NSNumber numberWithInt:2] forKey:@"db_version"];  // <- set int value
[defaults synchronize];    // <- save changes

Upvotes: 1

Artur Ozierański
Artur Ozierański

Reputation: 1177

You have to save this state to user prefs. Just add something like that to SKPaymentTransactionStatePurchased case:

NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    [prefs setBool:YES forKey:transaction.originalTransaction.payment.productIdentifier];
    [prefs synchronize];

And after relaunching your app you have to check this setting and generate proper button.

Upvotes: 1

Toastor
Toastor

Reputation: 8990

You need to handle this yourself, StoreKit won't help you on that.

For example, once your purchase has been completed, save some value to the Userdefaults to remember that the purchase has already been made. In your ViewControllers viewDidLoad method, just check for the presence of that value and then let it show / hide the appropriate buttons.

Upvotes: 1

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