InApp從另一個nsobject購買

Question

我建立了一個應用內購買，它工作正常。
然後我創建了一個新的目標c類，並將所有的應用程序購買編碼放在新類中。
好吧，現在我想從我的主視圖控制器調用應用內購買。這怎麼可能？感謝

viewcontroller.m

- (void)viewDidLoad 
{ 
    InAppPurchaseManager *IAPmanager = [[InAppPurchaseManager alloc]init]; 
    if([SKPaymentQueue canMakePayments]) 
     { 
      //sets payment observer to class. 
      [[SKPaymentQueue defaultQueue] addTransactionObserver:self]; 

      //initializes products array. 
      products = [[NSMutableArray alloc]init]; 
      [IAPmanager loadStore]; 

     } 
      else 
      { 
       NSLog(@"failed"); 
      } 

} 

InAppPurchaseManager.m

-(void)loadStore 
{ 
    //restarts any purchases if they were interupted last time the was open 
    [[SKPaymentQueue defaultQueue]addTransactionObserver:self]; 
    //get the product description 
    ViewController *viewcontroller = [[ViewController alloc]init]; 
    [viewcontroller requestProductData]; 
} 
//request product 
-(void)requestProductData 
{ 
    NSSet *productIdentifiers = [NSSet setWithObjects:@"com.company.myApp.App1",nil ]; 
    SKProductsRequest *productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:productIdentifiers]; 
    productsRequest.delegate = self; 
    [productsRequest start]; 
    NSLog(@"product request start"); 

} 

它停止這種

- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response 
{ 
    myproducts = response.products; 
    for(proUpgradeProduct in myproducts) 
    { 
     //debug log. 
     NSLog(@"Product title: %@" , proUpgradeProduct.localizedTitle); 
     NSLog(@"Product description: %@" , proUpgradeProduct.localizedDescription); 
     NSLog(@"Product price: %@" , proUpgradeProduct.price); 
     NSLog(@"Product id: %@" , proUpgradeProduct.productIdentifier); 
    } 
    // invalid purchase 
    for (NSString *invalidProductId in response.invalidProductIdentifiers) 
    { 
     NSLog(@"Invalid product id: %@" , invalidProductId); 
    } 

    [[NSNotificationCenter defaultCenter] postNotificationName:kInAppPurchaseManagerProductsFetchedNotification object:self userInfo:nil]; 

    NSLog(@"receive respond"); 
} 

Answer 1

調用之前運行這從任何Y類的方法OU want-

- （IBAction爲）購買：（ID）發送方 {

InAppPurchaseManager *應用程式內= [[InAppPurchaseManager的alloc] INIT];

[inapp loadStore];

if ([inapp canMakePurchases]) { 
    [inapp purchaseProUpgrade]; 

}}