问题描述

产品报出的log:-[__NSCFConstantString

开发了一个交易应用，测试了一下，使用的产品名如：#define PRODUCT_IDENTIFIER @""com.companyname.appname.P1""

在模拟器运行之后，出现的log：

YES u can make payments2013-04-22 11:37:44.809 appname[2382:c07] -[__NSCFConstantString productIdentifier]: unrecognized selector sent to instance 0x1ac04

代码：

-(void)checkForPayments{        if ([SKPaymentQueue canMakePayments])        {            printf(""n YES u can make payments"");   //   SKPayment *myPayment = [SKPayment paymentWithProductIdentifier:PRODUCT_IDENTIFIER];        SKPayment *myPayment = [SKPayment paymentWithProduct:PRODUCT_IDENTIFIER];      [[SKPaymentQueue defaultQueue] addPayment:myPayment];    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];                  }