IAP helper for Apple in app purchases. It uses ARC and blocks for ease of use. Ready to use with newsstand subscriptions.

##Require

• StoreKit
• iOS 5 or later
• ARC

##How to use

• Add IAPHelper folder to your project.
• Add Storekit framework

Cocoapod

pod 'IAPHelper'

Initialize

if(![IAPShare sharedHelper].iap) {

    NSSet* dataSet = [[NSSet alloc] initWithObjects:@"com.comquas.iap.test", nil];

    [IAPShare sharedHelper].iap = [[IAPHelper alloc] initWithProductIdentifiers:dataSet];

}

Production Mode On/Off

[IAPShare sharedHelper].iap.production = NO;

Request Products

[[IAPShare sharedHelper].iap requestProductsWithCompletion:^(SKProductsRequest* request,SKProductsResponse* response)
     {

     }];

Purchase

[[IAPShare sharedHelper].iap buyProduct:product
                                    onCompletion:^(SKPaymentTransaction* trans){
}];

Check Receipt with shared secret

[[IAPShare sharedHelper].iap checkReceipt:trans.transactionReceipt AndSharedSecret:@"your sharesecret" onCompletion:^(NSString *response, NSError *error) {

}];

Check Receipt without shared secret

[[IAPShare sharedHelper].iap checkReceipt:trans.transactionReceipt onCompletion:^(NSString *response, NSError *error) {

}];

Saving Product Identifier

[[IAPShare sharedHelper].iap provideContent:productIdentifier];

Check for Previous Purchase

if([[IAPShare sharedHelper].iap isPurchasedProductsIdentifier:@"com.comquas.iap.test"]
	{
		// require saving product identifier first
	}

Purchased Products

NSLog(@"%@",[IAPShare sharedHelper].iap.purchasedProducts);

Clear Purchases

[[IAPShare sharedHelper].iap clearSavedPurchasedProducts];
[[IAPShare sharedHelper].iap clearSavedPurchasedProductByID:@"com.myproduct.id"];

Restore Purchase

[[IAPShare sharedHelper].iap restoreProductsWithCompletion:^(SKPaymentQueue *payment, NSError *error) {

		//check with SKPaymentQueue

		// number of restore count
		int numberOfTransactions = payment.transactions.count;

		for (SKPaymentTransaction *transaction in payment.transactions)
		{
            NSString *purchased = transaction.payment.productIdentifier;
	        if([purchased isEqualToString:@"com.myproductType.product"])
        	{
				//enable the prodcut here
	        }
    	}

}];

Example

if(![IAPShare sharedHelper].iap) {
      NSSet* dataSet = [[NSSet alloc] initWithObjects:@"com.comquas.iap.test", nil];

      [IAPShare sharedHelper].iap = [[IAPHelper alloc] initWithProductIdentifiers:dataSet];
  }

[IAPShare sharedHelper].iap.production = NO;

  [[IAPShare sharedHelper].iap requestProductsWithCompletion:^(SKProductsRequest* request,SKProductsResponse* response)
   {
       if(response > 0 ) {
       SKProduct* product =[[IAPShare sharedHelper].iap.products objectAtIndex:0];

       [[IAPShare sharedHelper].iap buyProduct:product
                                  onCompletion:^(SKPaymentTransaction* trans){

              if(trans.error)
              {
                  NSLog(@"Fail %@",[trans.error localizedDescription]);
              }
              else if(trans.transactionState == SKPaymentTransactionStatePurchased) {

                  [[IAPShare sharedHelper].iap checkReceipt:trans.transactionReceipt AndSharedSecret:@"your sharesecret" onCompletion:^(NSString *response, NSError *error) {

                      //Convert JSON String to NSDictionary
                      NSDictionary* rec = [IAPShare toJSON:response];

                      if([rec[@"status"] integerValue]==0)
                      {
                      NSString *productIdentifier = trans.payment.productIdentifier;
                        [[IAPShare sharedHelper].iap provideContent:productIdentifier];
                          NSLog(@"SUCCESS %@",response);
                          NSLog(@"Pruchases %@",[IAPShare sharedHelper].iap.purchasedProducts);
                      }
                      else {
                          NSLog(@"Fail");
                      }
                  }];
              }
              else if(trans.transactionState == SKPaymentTransactionStateFailed) {
                   NSLog(@"Fail");
              }
                                  }];//end of buy product
       }
}];