1

我正在从 C++ 实例创建一个 Objective C 类的实例。问题是当试图获取一些变量的值（在 obj c 实例中）时，我总是得到 0。一些 NSLogs 也被忽略了！：

目标 C 类：InAppPurchaseManager.h

@interface InAppPurchaseManager : NSObject <SKProductsRequestDelegate, SKPaymentTransactionObserver>{
    SKProduct *proUpgradeProduct;
    SKProductsRequest *productsRequest;
@public
    int finishedPurchaseProcess;
}
- (int)hasFinishedPurchaseProcess;
- (void)purchase;
@end

InAppPurchaseManager.m

@implementation InAppPurchaseManager
- (void)purchase{
    finishedPurchaseProcess=1;
}
- (int)hasFinishedPurchaseProcess{
    NSLog(@"STORE: HELLO THERE");   
    return finishedPurchaseProcess;
}

testApp.h 类 testApp : public ofxiPhoneApp { public: void goToStoreFromMenu(); 无效检查购买（）；InAppPurchaseManager * theStore; }

测试应用程序.mm

// First I call ghis function
void testApp::goToStoreFromMenu(){  
    InAppPurchaseManager* theStore = [[InAppPurchaseManager alloc] init];
    [theStore purchase];
}

// And then this function
void testApp::checkPurchase(){  
    cout << "Finished? " << [theStore hasFinishedPurchaseProcess] << "\n";
}

结果总是完成？0，即使我在购买时将其设置为 1 。还有NSLog(@"STORE: HELLO THERE"); 被忽略

我不明白发生了什么事

4

1 回答 1

1

在goToStoreFromMenu中，您声明了一个名为 的新局部变量theStore。在checkPurchase中，您指的是其他具有相同名称的变量。该goToStoreFromMenu函数初始化局部变量，该变量在函数末尾超出范围。您需要初始化最终将在checkPurchase.

于 2011-03-13T20:22:13.833 回答