視圖控制器錯誤

Question

「未知類型名‘的ViewController’你的意思‘的UIViewController’」

那是錯誤，我得到這個

#import <UIKit/UIKit.h> 
#import <StoreKit/StoreKit.h> 
#import "ViewController.h" 

@interface PurchaseViewController : UIViewController <SKPaymentTransactionObserver, SKProductsRequestDelegate> 
@property (weak, nonatomic) IBOutlet UILabel *productTitle; 
@property (weak, nonatomic) IBOutlet UIButton *buyButton; 
@property (weak, nonatomic) IBOutlet UITextView *productDescription; 
- (IBAction)buyProduct:(id)sender; 
@property (strong, nonatomic) SKProduct *product; 
@property (strong, nonatomic) NSString *productID; 
@property (strong, nonatomic) ViewController *homeViewController; //error here 
- (void)getProductInfo:(UIViewController *)viewController; 
@end 

Answer 1

的@interface聲明之前，把這樣一行：

@class ViewController; 

看看是否有幫助。

Answer 2

您需要導入可可庫！

#import <Cocoa/Cocoa.h> 

這應該做的伎倆。