錯誤objective-c在應用程序購買實施

Question

我正在實施應用程序內購買，我不是一個非常有經驗的開發人員。 我使用布蘭特特洛伊教程我發現這裏： Tutorial

我在loadStore方法實現的錯誤： 發送「InAppPurchaseManager * const的__strong」到不兼容的類型「ID」

// 
// InAppPurchaseManager.h 
// 

#import <Foundation/Foundation.h> 
#import <StoreKit/StoreKit.h> 

@interface InAppPurchaseManager : NSObject <SKProductsRequestDelegate> 
{ 
    SKProduct *proUpgradeProduct; 
    SKProductsRequest *productsRequest; 
} 

// public methods 
- (void)loadStore; 
- (BOOL)canMakePurchases; 
- (void)purchaseProUpgrade; 

@end 

--- 

#import "InAppPurchaseManager.h" 

#define kInAppPurchaseProUpgradeProductId @"com.user.app.product" 

@implementation InAppPurchaseManager 

- (void)loadStore 
{ 
    // restarts any purchases if they were interrupted last time the app was open 

    [[SKPaymentQueue defaultQueue] addTransactionObserver: self]; 
ERROR HERE: Sending 'InAppPurchaseManager *const __strong' to parameter of incompatible type 'id<SKPaymentTransactionObserver>' 

    // get the product description (defined in early sections) 
    [self requestProUpgradeProductData]; 
} 

@end 

的參數

任何人都可以幫助我嗎？

Answer 1

答案就像kperryua說，只是要清楚：

@interface InAppPurchaseManager : NSObject <SKProductsRequestDelegate,SKPaymentTransactionObserver> 
{ 
SKProduct *proUpgradeProduct; 
SKProductsRequest *productsRequest; 
} 

// public methods 
- (void)loadStore; 
- (BOOL)canMakePurchases; 
- (void)purchaseProUpgrade; 

@end 

它應該只是罰款。

Answer 2

您需要聲明InAppPurchaseManager符合SKPaymentTransactionObserver協議。